Curriculum Vitae Description of Publicationsgalaxy.hua.gr/~thkam/CV_english_online.pdf · CV and Description of Publications: Dr. Thomas Kamalakis Page 5 / 48 2009-2012 Undergraduate

Curriculum Vitae

&

Description of Publications

Dr. Thomas Kamalakis

Assistant Professor

Department of Informatics and Telematics

Harokopio University of Athens

August, 2015

CV and Description of Publications: Dr. Thomas Kamalakis

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Curriculum Vitae ..................................................................................................................... 3

Personal Information ........................................................................................................................ 3

Education ........................................................................................................................................... 3

Foreign Languages ........................................................................................................................... 3

Work Experience ............................................................................................................................... 4

Teaching Experience ......................................................................................................................... 4

PhD supervisees ................................................................................................................................ 5

Participation in R&D projects ......................................................................................................... 5

Administrative and Organizational Work at Harokopio University ........................................ 6

Research Statement ........................................................................................................................... 8

Journal Publications.......................................................................................................................... 8

Conference Papers .......................................................................................................................... 12

Citations ........................................................................................................................................... 16

Other interests ................................................................................................................................. 16

Abstracts and Citations of Journal Papers ......................................................................... 17

Abstracts and Citations of Conference Proceedings ....................................................... 39


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Curriculum Vitae

Personal Information

Name: Thomas

Last name: Kamalakis

Family Status: Married

Work Address: Department of Informatics and Telematics, Harokopio University of Athens,

Omirou 9, Tavros, GR17778

Office Tel: +30210-9549406

Fax: +302109549401

E-mail: [email protected]

Webpage: http://galaxy.hua.gr/~thkam

Youtube: https://www.youtube.com/user/thomaskamalakis/

Education

2000-2004 PhD thesis, “Contribution to the study of optical networks based on arrayed

waveguide grating multiplexers and demultiplexers”, National and Kapodistrian

University of Athens, Department of Informatics and Telecommunications

1997-1999 MSc in Radioelectronics, National and Kapodistrian University of Athens,

Department of Informatics and Telecommunications & Department of Physics.

1993-1997 Degree in Informatics and Telecommunications, National and Kapodistrian

University of Athens, Department of Informatics and Telecommunications.

Foreign Languages

English (Cambridge Proficiency in English 1992)


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French (Diplome de Langue et de Civilization Francaise, Sorbonne I, 1991)

Work Experience

Teaching Experience

My academic teaching experience covers a variety of subjects at a graduate and post-graduate level

related to communications and electronics. A number of courses are now available on-line through my

youtube channel, https://www.youtube.com/user/thomaskamalakis/

2012-today Postgraduate course “Optical Communications”, Department of Informatics and

Telematics, Harokopio University of Athens

2011-today Undergraduate course “Telecommunications Systems”, Department of Informatics

and Telematics, Harokopio University of Athens

2008-today Undergraduate course “Electronics”, Department of Informatics and Telematics,

Harokopio University of Athens (lectures and laboratory)

Undergraduate course “Digital Design”, Department of Informatics and Telematics,

Harokopio University of Athens (lectures and laboratory)

2009 -

σήμερα

Undergraduate course “Propagation of telecom signals”, Department of Informatics

and Telematics, Harokopio University of Athens.

Undergraduate course “Optical communications”, Department of Informatics and

Telematics, Harokopio University of Athens.

2012-today Assistant Professor at the Department of Informatics and Telematics, Harokopio

University of Athens

2008-2012 Lecturer at the Department of Informatics and Telematics, Harokopio University of

Athens

2007-2008 Adjunct lecturer at the Department of Informatics and Telematics, Harokopio

University of Athens for the courses: Electronics (lectures and laboratory exercises,

winter semester) and Digital design (lectures and laboratory exercises, spring

semester)

2004-2007 Adjunct lecturer at the Department of Informatics and Telecommunications,

University of Peloponnese for the courses: Electronics I (lectures and laboratory

exercises, winter semester) and Electronics II (lectures and laboratory exercises,

spring semester)

2004-2012 Research associate, Optical Communications Laboratory, Department of Informatics

and Telecommunications.


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2009-2012 Undergraduate course “Introduction to telecommunications”, Department of

Informatics and Telematics, Harokopio University of Athens.

2007-2008 Adjunct lecturer at the Department of Informatics and Telematics, Harokopio

University of Athens for the courses: Electronics (lectures and laboratory exercises,

winter semester) and Digital design (lectures and laboratory exercises, spring

semester)

2004-2007 Adjunct lecturer at the Department of Informatics and Telecommunications,

University of Peloponnese for the courses: Electronics I (lectures and laboratory

exercises, winter semester) and Electronics II (lectures and laboratory exercises,

spring semester)

2004-2005 Responsible for the postgraduate course “Antennas”, MSc in Radioelectronics,

National and Kapodistrian University of Athens, Department of Informatics and

Telecommunications & Department of Physics.

2004 Partly Responsible for the postgraduate course “Core and Access Networks”, MSc in

Network Administration and Economics, National and Kapodistrian University of

Athens, Department of Informatics and Telecommunications.

2000-2004 Series of lectures for the postgraduate courses “Optical Networks I” & “Optical

Networks II”, MSc in Radioelectronics, National and Kapodistrian University of

Athens, Department of Informatics and Telecommunications.

2000-2004 Series of lectures for the undergraduate courses “Digital Communications I”,

National and Kapodistrian University of Athens, Department of Informatics and

Telecommunications.

2000-2004 Laboratory assistant at the Electronics laboratory, National and Kapodistrian

University of Athens, Department of Informatics and Telecommunications.

PhD supervisees

1. Mrs Margariti Katerina, Coherent optical wireless technologies

2. Mr. Leonidas Dogkas, Optical components based on micro-ring resonators

3. Mr. Dimitris Alexopoulos, Plasmonic component for optical communications

Participation in R&D projects

1. Head researcher & team leader in the project “Realization of nanophotonic transistors based

on optical black-holes”, funded by the Latsis Foundation (team budget: 12.000€) [2014-2015].

2. Head researcher & team leader, COWS project, “ARISTEIA ΙΙ” Action of the “Operational

programme Education and Life Long Learning”, co-funded by the European Social Fund

(ESF) and the Greek state (team budget: 250.000€) [2014-2015].


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3. Head researcher & team leader, Optical Wireless Ultrafast Systems for Next Generation

Short-Range Network Architectures Based On Coherent Receiver Technology - Luminousnet

project, funded by the HUA Research Committee (team budget: 3.000€) [2014].

4. Participation in the COST Action IC1101, Optical Wireless Communications - An Emerging

Technology (OPTICWISE). [2012-2015].

5. Head researcher & team leader for HUA at the collaborative initiative, “Polymeric Photonics

for Information and Communications technologies (PHOTOPOLIS)”, funded by the Ministry

of Education (team budget: 90.000€) [2012-2015].

6. Team leader for the project “E-services for supporting lifelong learning for the graduates of

Harokopio University and the general public” (team budget: 70.000€) [2011-2015].

7. Head researcher & team leader for HUA at the collaboration project Archimedes III -“Optical

networks based on photonic circuits”, funded by the Ministry of Education (team budget:

5.000€) [2012-2015].

8. Post-doctoral researcher in the integrated project “OMEGA” (Home Gigabit Access) ICT co-

funded by the European Commission under EU Framework Programme 7 (FP7) [2008-2010].

9. Research associate in the project “Demand forecasting for broadband services and

development of a technoeconomic investment model for the realization and operation of local

area access networks” funded by Information Society.

10. Research associate in the project ECOSYS, “Technoeconomic analysis of integrated systems

and services” funded under the CELTIC-EUREKA framework.

11. Research associate in the project “Technical consultant for the support of the development of

metropolitan area networks in the Peloponnese district”, funded by Information Society.

12. Research associate in the project “Design and simulation of all-optical components based on

Photonic Crystals”, funded by the Ministry of Education.

13. Post-doctoral researcher in the project Pythagoras I-“Photonic components for all-optical

signal regeneration and application in high-speed optical networks”, funded by the Ministry

of Education.

14. Post-doctoral researcher in the project Pythagoras II-“Free Space Optical Networks”, funded

by the Ministry of Education.

15. Research associate in the project “Design and simulation of all-optical components based on

Photonic Crystals”, funded by the Ministry of Education.

16. Research associate in the project “IP-over-WDM: Alternative architectures for enabling IP

traffic over WDM netwroks”, funded by O.T.E.

Administrative and Organizational Work at Harokopio University

Since the Department of Informatics and Telematics is relatively new in the academic arena, it is very

important to achieve sufficient mobilization of its academic members in order to ensure that the basic

infrastructure is designed and maintained in a coordinated manner. I like to think that I, along with


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my colleagues have contributed greatly in this regard, eversince 2006 that I first came to Harokopio

and the new department building was still under construction, and the department was housed at a

rented building which did not yet had any infrastructure to support its academic and research

activities. I am particularly proud of the Electronics and Communications laboratory, created from

scratch and which currently has educational and specialized research equipment of 600.000€ budget.

2014 President of the committee for the public procurement of research equipment for

telecom applications (budget: 97.500€).

2013 President of the committee for the public procurement of educational and

technological equipment for the Department of Informatics and Telematics (budget:

440.000€).

2013-today Coordinator and contact point for the management of the infrastructure of the

Department of Informatics and Telematics.

2013-today Member of the scientific committee of the Network Operations Center of Harokopio

University

2012-today Member of the academic committee for selecting candidates for the postgraduate

program of the Department of Informatics and Telematics.

2011 Member of the committee for the public procurement of furniture for the 6-storey

building of the Department of Informatics and Telematics (budget: 150.000€).

2011 Member of the committee for the public procurement of ICT equipment for the 6-

storey building of the Department of Informatics and Telematics (budget: 450.000€).

2011 Member of the committee for the public procurement of optical fiber network for the

interconnection of the 6-storey building of the Department of Informatics and

Telematics with the main campus (budget: 60.000€).

2010-today Member of the academic committee for selecting adjunct teaching staff for the

undergraduate program of the Department of Informatics and Telematics

2010-today Member of the academic committee for selecting teaching staff for the postgraduate

program of the Department of Informatics and Telematics

2010 Member of the recommendation committee for the fulfillment of a staff lecturer in the

subject of “Broadband Telecommuniction Networks and Techoeconomic Analysis”


subject of “Cognitive Wireless Networks and Telematic Applications”


subject of “Broadband Telecommunication Systems and Components”


subject of “Usability of internet sites and e-commerce”

2007-2010 Responsible for the upgrade of the electronic laboratory equipment of the Informatics


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and Telematics (budget: 30.000€).

Research Statement

My research focuses on two fields: Optical communications and techno-economic analysis. In the field

of optics communications, my research can be classified into the following directions:

• Optical wireless systems. Within this field, we have undertaken the study of modulation

schemes for efficient data transmission, channel equalization, channel model, visible light

communications, multiple input multiple output (MIMO), coherent techniques for wireless

data centers. The work is motivated by the need for high-speed local area networks.

• Nanophotonics. The research focus is in microrings, photonic crystals, coupled resonator

optical waveguides and plasmonic waveguides for efficient light manipulation and processing.

The work is mainly carried through in-house developed numerical tools including finite-

difference time domain and finite-difference frequency domain methods, plane wave expansion

and coupled mode theory. We mainly deal with non-linear applications of such technologies

and slow light structures. The work is motivated by the need for efficient optical signal

processing.

• Wavelength division multiplexing networks. Much of my earlier work was focused on

wavelength multiplexers and demultiplexers such as arrayed waveguide gratings (AWGs)

and modeling of non-linear impairments and in-band crosstalk. The work was motivated by

the need for efficient design and modeling of broadband optical networks.

In the field of techo-economics, my research can be classified into the following directions:

• Techno-economic assessment of optical access networks, including fiber-to-the-home, time

division and wavelength division multiplexed passive optical networks and outdoor free-space

optical networks.

• Roadmapping of future access and home networks. In this area, we applied various decision

making schemes for assessing the technical and socio-economic aspects of future home

networks including conventional radio and optical technologies. We have also extended the

existing decision making framework for including the impact of uncertainty.

Journal Publications

J1. P. Kanakis, T. Kamalakis, and T. Sphicopoulos, "Designing photonic crystal waveguides for

broadband four-wave mixing applications," Opt. Lett. 40, 1041-1044 (2015)

J2. Vasilopoulou, M., Georgiadou, D.G., Soultati, A., Douvas, A.M., Papadimitropoulos, G.,

Davazoglou, D., Pistolis, G., Stathopoulos, N.A., Kamalakis, T., Alexandropoulos, D., Vainos, N.,

Politi, C.T., Palilis, L.C., Couris, S., Coutsolelos, A.G., Argitis, P. “Solution processed multi-color

organic light emitting diodes for application in telecommunications”, Microelectronic Engineering,

145, pp. 21-28 (2015).

J3. Margariti, K., Kamalakis, T., “Performance of coherent detection in optical wireless systems for

high speed indoor communications”, Optical and Quantum Electronics, 47 (5), pp. 985-1003 (2015).

J4. Kamalakis, T., Alexandropoulos, D., Vainos, N. “Efficient design of polymer micro-ring resonator

filters based on coupled mode theory and finite difference mode solver”, Optics Communications, 339,

pp. 123-128 (2015).


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J5. Dede, G., Kamalakis, T., Sphicopoulos, T. “Convergence properties and practical estimation of the

probability of rank reversal in pairwise comparisons for multi-criteria decision making problems”,

European Journal of Operational Research, 241 (2), pp. 458-468 (2014).

J6. Kanakis, P., Kamalakis, T., Sphicopoulos, T., "Designing slow-light photonic crystal waveguides

for four-wave mixing applications", Optics Letters, 39 (4), pp. 884-887 (2014).

J7. Kanakis, P., Kamalakis, T., Sphicopoulos, T. "Approximate expressions for estimation of four-

wave mixing efficiency in slow-light photonic crystal waveguides", Journal of the Optical Society of

America B: Optical Physics, 31 (2), pp. 366-375 (2014).

J8. P. Kanakis, T. Kamalakis, and T. Sphicopoulos, 'Optimization of the storage capacity of slow light

photonic crystal waveguides', Optics Letters, 37 (22), pp. 4585-4587 (2012).

J9. P. Kanakis, T. Kamalakis, and T. Sphicopoulos, 'Numerical analysis of soliton propagation in

photonic crystal slab waveguides for signal processing applications', JOSA B, Vol. 29, Issue 10, pp.

2787-2796 (2012).

J10. Dede, G., Kamalakis, T., Varoutas, D. “Evaluation of optical wireless technologies in home

networking: An analytical hierarchy process approach”, Journal of Optical Communications and

Networking, 3 (11), art. no. 6059258, pp. 850-859 (2011).

J11. G. Ntogari, T. Kamalakis, T. Sphicopoulos, 'Analysis of indoor multiple-input multiple-output

coherent optical wireless systems', Journal of Lightwave Technology, 30 (3), art. no. 6084693, pp. 317-

324 (2012).

J12. Fitrakis, E.-P., Kamalakis, T., Sphicopoulos, T. ‘Slow light in insulator-metal-insulator plasmonic

waveguides’, OSA Journal of the Optical Society of America B: Optical Physics, 28 (9), pp. 2159-2164

(2011).

J13. Dede, G., Kamalakis, T., Varoutas, D. “Towards a roadmap for future home networking systems:

An analytical hierarchy process approach”, IEEE Systems Journal, 5 (3), art. no. 5892908, pp. 374-384

(2011).

J14. N. Mantzoukis, C.S. Petrou, A. Vgenis, I. Roudas, T. Kamalakis, ‘Performance comparison of

electronic PMD equalizers for coherent PDM QPSK systems’, IEEE/OSA Journal of Lightwave

Technology, 29 (11), art. no. 5741817, pp. 1721-1728 (2011).

J15. Kamalakis, T., Walewski, J.W., Ntogari, G., Mileounis, G. “Empirical volterra-series modeling of

commercial light-emitting diodes”, Journal of Lightwave Technology, 29 (14), art. no. 5771519, pp.

2146-2155 (2011).

J16. N. Avaritsiotis, T. Kamalakis, T. Sphicopoulos, ‘On the effectiveness of coupled mode theory in

the analysis of photonic crystal coupled resonator devices’, IEEE Journal of Lightwave Technology, 29

(5), art. no. 5701634, pp. 736-743 (2011).

J17. G. Ntogari, T. Kamalakis, J. Walewski, T. Sphicopoulos, ‘Combining Illumination Dimming

Based on Pulse-Width Modulation With Visible-Light Communications Based on Discrete Multitone’,

IEEE/OSA Journal of Optical Communications and Networking, 3 (1), pp. 56-65 (2011).

J18. T. Rokkas, D. Katsianis, T. Kamalakis, D. Varoutas, ‘Economics of Time and Wavelength

Domain Multiplexed Passive Optical Networks’, IEEE/OSA Journal of Optical Communications and

Networking, Vol. 2, Issue 12, pp. 1042-1051 (2010).


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J19. Fitrakis, E.P., Kamalakis, T., Sphicopoulos, T. 'Slow-light dark solitons in insulator-insulator-

metal plasmonic waveguides', OSA Journal of the Optical Society of America B: Optical Physics, 27

pp. 1701-1706 (2010)

J20. Mantzoukis, N.C., Petrou, C.S., Vgenis, A., Kamalakis, T., Roudas, I., Raptis, L. 'Outage

probability due to PMD in coherent PDM QPSK systems with electronic equalization' IEEE

Photonics Technology Letters, 22 (16), art. no. 5483144, pp. 1247-1249 (2010).

J21. Dede, G., Kamalakis, T., Varoutas, D., Fuentetaja, R.G., Javaudin, J.P., “Evaluation of

technological and socio-economic issues affecting the deployment of home networks: evidence from the

ICT-OMEGA project”, Elsevier NETNOMICS: Economic Research and Electronic Networking , pp.

1-20 (2010).

J22. G. Ntogari, T. Kamalakis, T. Sphicopoulos, 'Performance Analysis of Decision Feedback and

Linear Equalization schemes for Non-Directed Indoor Optical Wireless Systems', Journal of

Communications, Vol 4, No 8,pp. 565-571 (2009)

J23. Ntogari, G.; Kamalakis, T.; Sphicopoulos, T., "Performance analysis of space time block coding

techniques for indoor optical wireless systems," Selected Areas in Communications, IEEE Journal on ,

vol.27, no.9, pp.1545-1552, December 2009

J24. Neokosmidis, I.; Kamalakis, T.; Walewski, J.W.; Inan, B.; Sphicopoulos, T., "Impact of Nonlinear

LED Transfer Function on Discrete Multitone Modulation: Analytical Approach," ΙΕΕΕ Lightwave

Technology, Journal of , vol.27, no.22, pp.4970-4978, Nov.15, (2009)

J25. Τ. Rokkas, D. Katsianis, Th. Kamalakis, D. Varoutas and Th. Sphicopoulos, “Evaluation of FSO

and FTTH tecnologies using techno-economic and risk analysis” Info, vol. 11, no 3, pp. 87-96 (2009).

J26. Neokosmidis, I.; Kamalakis, T.; Sphicopoulos, T., "Multicanonical Monte Carlo Modeling of

Wavelength Division Multiplexed Differential Phase Shift Keying Systems," ΙΕΕΕ Lightwave

Technology, Journal of , vol.27, no.22, pp.5065-5072, Nov.15, 2009

J27. Avaritsiotis, N.; Kamalakis, T.; Sphicopoulos, T., "A Semi-Analytical Model for Numerical

Study of a Photonic Crystal Coupled Resonator Optical Waveguide With Disorder," ΙΕΕΕ Lightwave

Technology, Journal of , vol.27, no.14, pp.2892-2899, July15, (2009)

J28. N. Avaritsiotis, T. Kamalakis, T. Sphicopoulos, “An Analytical Model for the Calculation of the

Transfer Function of a Photonic Crystal Coupled Resonator Optical Waveguide” IEEE Journal of

Lightwave Technology, 26 (20), pp. 3452-3460 (2009).

J29. A. Theocharidis, T. Kamalakis, T. Sphicopoulos, “Linear and Non-Linear Optical Pulse

Propagation in Photonic Crystal Waveguides near the Band Edge”, (2008) IEEE Journal of Quantum

Electronics, 44 (11), pp. 1020-1027

J30. T. Kamalakis, D. Varoutas and T. Sphicopoulos, “On the Application of Demand and Price

Evolution Forecasting in Road-Mapping the Optoelectronic Component Industry”, The Mediterranean

Journal of Electronics and Communications, Volume 3, No. 4, October 2007.

J31. A. Theocharidis, T. Kamalakis, T. Sphicopoulos, “Accuracy of Coupled-Mode Theory and Mode-

Matching Method in the Analysis of Photonic Crystal Waveguide Perturbations”, IEEE Journal of

Lightwave Technology, 25 (10), pp.3193-3201 (2007)


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J32. T. Rokkas, T. Kamalakis, D. Katsianis, D. Varoutas and T. Sphicopoulos, “Business Prospects of

Wide-Scale Deployment of Free Space Optical Technology as a Last-Mile Solution: A Techno-

Economic Evaluation”, OSA Journal of Optical Networking 6 (7), pp. 860-870 (2007).

J33. T. Kamalakis and T. Sphicopoulos, “A New Formulation of Coupled Propagation Equations in

Periodic Nanophotonic Waveguides for the Treatment of Kerr-induced Nonlinearities”, IEEE Journal

of Quantum Electronics 43 (10) pp. 3193-3201 (2007).

J34. I. Neokosmidis, T. Kamalakis and T. Sphicopoulos, “Optical Delay Lines based on Soliton

Propagation in Photonic Crystal Coupled Resonator Optical Waveguides”, IEEE Journal of Quantum

Electronics 43(7) pp. 560-567 (2007).

J35. A. Theocharidis, T. Kamalakis and T. Sphicopoulos “Analysis of Photonic Crystal Waveguide

Discontinuities Using the Mode Matching Method and Application to Device Performance

Evaluation”, OSA Journal of Optical Society of America B, 24(8), pp.1698-1706 (2007).

J36. T. Kamalakis, T. Sphicopoulos, S.Sheikh Muhammad and E. Leitgeb, “Estimation of Power

Scintillation Probability Density Function in Free Space Optical Links Using Multi-Canonical Monte

Carlo Sampling”, OSA Optics Letters 31 (21), pp. 3077-3079 (2006)

J37. T. Kamalakis and T. Sphicopoulos, “Frequency Dependence of the Coupling Coefficients and

Resonant Frequency Detuning in a Nanophotonic Waveguide-Cavity System”, IEEE Journal Of

Quantum Electonics, 42(8), pp. 827-837 (2006).

J38. I. Neokosmidis, T. Kamalakis and Thomas Sphicopoulos, “Accurate Estimation of the Impact of

IP Traffic Burstiness on the Performance of Wavelength Division Multiplexing Networks”, OSA

Optics Express, 13 (24), pp. 9702-9707 (2005)

J39. I. Neokosmidis, T. Kamalakis and T. Sphicopoulos, “Non-linearity Tolerance of Optical

Modulation Formats in Non-Zero Dispersion Fibers”, IEEE Photonics Technology Let., 17 (12), pp.

2760 - 2762 (2005).

J40. T. Kamalakis and T. Sphicopoulos, “Analytical Expressions for the Resonant Frequencies and

Modal Fields of Finite Coupled Optical Cavity Chains”, IEEE Journal of Quantum Electronics, 41

(11), pp. 1419 – 1425 (2005).

J41. T. Kamalakis and T. Sphicopoulos “Performance Analysis of Differential Phase Shift Keying

Optical Receivers in the Presence of In-band Crosstalk Noise” IEEE Journal of Lightwave Technology,

23 (12) , pp. 4084 - 4092 (2005)

J42. T. Kamalakis and T. Sphicopoulos, “Numerical study of the implications of size nonuniformities

in the performance of photonic crystal couplers using coupled mode theory”, IEEE Journal of Quantum

Electronics, 41 (6) , pp. 863 - 871 (2005).

J43. I. Neokosmidis, T. Kamalakis, A. Chipouras, and T. Sphicopoulos “New Techniques for the

Suppression of the Four Wave Mixing-Induced Distortion in Non-Zero Dispersion Fiber WDM

Systems”, IEEE Lightwave Technology, 23 (3), pp. 1137 - 1144 (2005).

J44. I. Neokosmidis, T. Kamalakis, A. Chipouras, and T. Sphicopoulos “Estimation of the four-wave

mixing noise probability-density function by the multicanonical Monte Carlo method”, OSA Optics

Letters, 30(1), pp. 11-13 (2005).


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J45. I. Neokosmidis, T. Kamalakis, A. Chipouras and T. Sphicopoulos, “Evaluation of BER

degradation and power limits in WDM networks due to Four-Wave Mixing by Monte-Carlo

simulations”, OSA Journal of Applied Optics, 43 (26), pp. 5023-5032 (2004).

J46. T. Kamalakis, D. Varoutas and T. Sphicopoulos, “Statistical Study of In-band Crosstalk Noise

Using the Multi-Canonical Monte Carlo Method”, IEEE Photonics Technology Let., 16 (10), pp. 2242

- 2244 (2004).

J47. T. Kamalakis and T. Sphicopoulos, “Numerical Study of the Fabrication Tolerance of

Conventional and MMI-Flattened AWGs”, IEEE Photonics Technology Let., 16(8), pp. 1876 - 1878

(2004)

J48. T. Kamalakis and T. Sphicopoulos, “Asymptotic Behavior of In-band Crosstalk Noise in WDM

Networks”, IEEE Photonics Technology Let., 15 (3), pp.476-479, (2003).

J49. T. Kamalakis, T. Sphicopoulos and M. Sagriotis Accurate Error Probability Estimation in the

Presence of In-band Crosstalk Noise in WDM Networks, ΙΕΕΕ Journal of Lightwave Technology,

21(10), pp. 2172-2181 (2003).

J50. T. Kamalakis and T. Sphicopoulos “Application of the Saddle Point Method for the Evaluation of

Crosstalk Implications in an Arrayed Waveguide Grating Interconnection”, IEEE Journal of


J51. T. Kamalakis, T. Sphicopoulos and D. Syvridis, “An Estimation of Performance Degradation Due

to Fabrication Errors in AWGs”, IEEE Journal of Lightwave Technology, 20 (9), pp. 1779 - 1787

(2002).

J52. T. Kamalakis and T. Sphicopoulos, “An Efficient Technique for the Design of an Arrayed

Waveguide Grating with Flat Spectral Response”, IEEE Journal of Lightwave Technology, 19 (11),

pp.1716-1725 (2001).

Conference Papers

C1. T. Kamalakis, Georgia Dede, Katerina Margariti, Panagiotis Kanakis, Dimitris

Alexandropoulos and Nikos Vainos, "Photonic Technologies for Next Generation Home and

Office Networks",PCI '14 Proceedings of the 18th Panhellenic Conference on Informatics

(2014)

C2. K. Margariti and T. Kamalakis, "Coherent Optical Wireless Systems for High Speed Local

Area Networks with Increased Resilience", PCI '14 Proceedings of the 18th Panhellenic

Conference on Informatics (2014).

C3. P. Kanakis, T. Kamalakis and A. Bogris, " Slow Light in Photonic Crystal Waveguides as a

Key Enabler for Future Optical Network Technologies", PCI '14 Proceedings of the 18th

Panhellenic Conference on Informatics (2014)

C4. Vasilopoulou, M.; Georgiadou, D.G.; Soultati, A; Papadimitropoulos, G.; Argitis, P.;

Alexandropoulos, D.; Vainos, N.; Politi, C.T.; Kamalakis, T.; Davazoglou, D., "Enhancing

spectral response of organic photodetectors through surface modification of metal oxide

electrodes," Transparent Optical Networks (ICTON), 2014 16th International Conference on ,

vol., no., pp.1,4, 6-10 July 2014


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C5. Margariti, Katerina; Kamalakis, Thomas, "Coherent optical wireless: An alternative technology

for broadband indoor communications," Transparent Optical Networks (ICTON), 2014 16th

International Conference on , vol., no., pp.1,4, 6-10 July 2014

C6. Vainos, N., Alexandropoulos, D., Politi, C., Matrakidis, C., Dede, G., Kamalakis, T.,

Kouloumentas, C., Avramopoulos, H., Couris, S., Rokkas, T., Varoutas, D., Vasilopoulou, M.,

Davazoglou, D., Pistolis, G., Argitis, P. "Polymer photonic technologies for optical

communications", (2013) International Conference on Transparent Optical Networks, art. no.

6603053.

C7. Kamalakis, T., Alexandropoulos, D., Dede, G., Kanakis, P., Politi, T., Vainos, N. "Numerical

simulation and design of organic integrated optical circuits: The PHOTOPOLIS approach",

(2013) International Conference on Transparent Optical Networks, art. no. 6602917.

C8. Kanakis, P., Kamalakis, T., Sphicopoulos, T. "Systematic optimization of the storage capacity

of slow light photonic crystal waveguides.", (2013) Proceedings of SPIE - The International

Society for Optical Engineering, 8767, art. no. 876702, .

C9. Kanakis, P., Kamalakis, T., Sphicopoulos, T. "Nonlinear slow light propagation in photonic

crystal slab waveguides: Theory and practical issues", (2012) Proceedings of SPIE - The

International Society for Optical Engineering, 8425, art. no. 842503, .

C10. Kamalakis, T., Avaritsiotis, N., Sphicopoulos, T., ‘Efficient analysis of nano-photonic coupled

resonator devices using coupled mode theory’, (2011) International Conference on Transparent

Optical Networks, art. no. 5971037 (invited paper).

C11. Kamalakis, T., Walewski, J.W., Ntogari, G., Mileounis, G., “Light-emitting diodes: The

unknown entities” (2010) 2010 12th International Conference on Transparent Optical

Networks, ICTON 2010, art. no. 5549134.

C12. Mantzoukis, N., Vgenis, A., Petrou, C.S., Roudas, I., Kamalakis, T., Raptis, L. “Design

guidelines for electronic PMD equalizers used in coherent PDM QPSK systems”, (2010)

European Conference on Optical Communication, ECOC, 1-2, art. no. 5621333.

C13. Bouchet, O., Porcon, P., Wolf, M., Grobe, L., Walewski, J.W., Nerreter, S., Langer, K.-D.,

Fernández, L., Vucic, J., Kamalakis, T., Ntogari, G., Gueutier, E. “Visible-light communication

system enabling 73 Mb/s data streaming”, IEEE Globecom Workshops, GC'10, art. no.

5700092, pp. 1042-1046 (2010).

C14. Bouchet, O., Porcon, P., Walewski, J.W., Nerreter, S., Langer, K.-D., Fernández, L., Vučić, J.,

Kamalakis, T., Ntogari, G., Neoskosmidis, I., Gueutier, E. “Wireless optical network for a home

network”, (2010) Proceedings of SPIE - The International Society for Optical Engineering,

7814, art. no. 781406,

C15. Dede G., Varoutas D., Kamalakis T., Goni G., Javaudin J.P., "Criteria and Factors affecting

home networks deployment: Evidence from the ICT-OMEGA project", ICT - Mobile Summit

2009, Santander, Spain.

C16. O'Brien, D.C., Faulkner, G., Le Minh, H., Bouchet, O., El Tabach, M., Wolf, M., Walewski,

J.W., Randel, S., Nerreter, S., Franke, M., Langer, K.-D., Grubor, J., Kamalakis, T., “Gigabit

optical wireless for a home access network”, (2009) IEEE International Symposium on

Personal, Indoor and Mobile Radio Communications, PIMRC, art. no. 5449935.

C17. Mantzoukis, N.; Petrou, C.S.; Vgenis, A.; Roudas, I.; Kamalakis, T.; Raptis, L., "Electronic

equalization of polarization mode dispersion in coherent POL-MUX QPSK systems," Optical

Communication, 2009. ECOC '09. 35th European Conference on , vol., no., pp.1-2, 20-24

Sept. 2009


Page 14 / 48

C18. D. C. O'Brien, G. Faulkner, O. Bouchet, M. Tabach, M. Wolf, J. W. Walewski, S. Randel, S.

Nerreter, M. Franke, K. Langer, J. Grubor, and T. Kamalakis, “Home access networks using

optical wireless transmission”, 19th IEEE International Symposium on Personal, Indoor Mobile

Radio Communications, Cannes, France (2008).

C19. O. Bouchet, M. Tabach, M. Wolf2, D. C. O'Brien, G. E. Faulkner, J. W. Walewski, S. Randel,

M. Franke, S. Nerreter, K. Langer, J. Grubor and T. Kamalakis, “Hybrid Wireless Optics

(HWO): Building the Next-Generation Home Network”, CSNDSP08 Graz, Austria (2008).

C20. G. Ntogari, T. Kamalakis and T. Sphicopoulos, “Performance Analysis of Non-Directed

Equalized Indoor Optical Wireless Systems”, CSNDSP08 Graz, Austria (2008).

C21. A. Bogris, T. Kamalakis, D. Syvridis, T. Sphicopoulos, “Transformation of nonlinear phase

noise statistics in a phase-sensitive amplifier”, Winter Topical Meeting Series, 2008

IEEE/LEOS (2008).

C22. A. Theocharidis, T. Kamalakis, T. Sphicopoulos “Perturbation analysis in photonic crystal

waveguides disorders”, ICTON Mediterranean Winter Conference, 2007. ICTON-MW

(2007).

C23. T. Kamalakis, I. Neokosmidis, A. Theocharidis, , T. Sphicopoulos “Soliton propagation in

coupled resonator optical waveguides: Application to optical delay lines”, ICTON

Mediterranean Winter Conference, 2007. ICTON-MW (2007).

C24. T. Rokkas, T. Kamalakis, D. Katsianis, D. Varoutas and T. Sphicopoulos. “Business Prospects

of Wide Scale Deployments of Free Space Optical Technology as a Last Mile Solution: A

Techno-economic Analysis” to be presented at the 18th IEEE International Symposium on

Personal, Indoor Mobile Radio Communications in Athens (September 2007).

C25. T. Kamalakis, I. Neokosmidis, A. Tsipouras, T. Sphicopoulos, S. Pantazis, I.

Andrikopoulos, “Hybrid Free Space Optical / Millimeter Wave Outdoor Links For Broadband

Wireless Access Networks” to be presented at the 18th IEEE International Symposium on

Personal, Indoor Mobile Radio Communications in Athens (September 2007).

C26. T. Rokkas, T. Kamalakis, D. Katsianis, D. Varoutas and T. Sphicopoulos. “Free Space Optical

Technology as an alternative Last-Mile Solution: A Techno-Economic Analysis” to be

presented at the 6th Conference on Telecommunications Techno-Economics (Helsinki Finland

2007).

C27. D. Varoutas, T. Kamalakis, D. Katsianis, T. Sphicopoulos and T. Monath, “Importance of the

Maturity of Photonic Component Industry on the Business Prospects of Optical Access

Networks: A Techno-economic Analysis” to be presented at the IFIP Networking Conference

(Atlanta, 2007).

C28. N. Avaritsiotis, T. Kamalakis and T. Sphicopoulos “A Semi-analytical Model for Estimation of

the Transfer Function of a Coupled Resonator Optical Waveguide Based on Coupled Mode

Theory”, to be presented at the European Conference on Integrated Optics (Copenhagen 2007).

C29. T. Kamalakis, T. Sphicopoulos and A. Theoharidis, “A Semi-Analytical Propagation Equation

Model for the Study of Signal Propagation in Kerr Nonlinear Nano-photonic Waveguides” to

be presented at the European Conference on Integrated Optics (Copenhagen 2007).

C30. D. Varoutas, T. Kamalakis, D. Katsianis, T. Sphicopoulos “Techno-Economic Evaluation of

Optical Access and Metropolitan Area Networks: The Influence of the Status of Maturity of the

Photonics Component Industry” presented at Optical Fiber Communications (OFC)

Conference in Anaheim, USA (2007).


Page 15 / 48

C31. I. Neokosmidis, A. Theocharidis, T. Kamalakis and T. Sphicopoulos, “Computation of the

Filtering Properties of Photonic Crystal

Waveguide Discontinuities Using the Mode Matching Method”, ICCT Enformatika

Conference (Vienna, Austria – 2006).

C32. T. Kamalakis, I. Neokosmidis D. Varoutas and T. Sphicopoulos, “Demand and Price Evolution

Forecasting as Tools for Facilitating the RoadMapping Process of the Photonic Component

Industry”, ICCT Enformatika Conference (Vienna, Austria – 2006).

C33. I. Neokosmidis, N. Gkekas, T. Kamalakis and T. Sphicopoulos, “tatistical Evaluation of

Nonlinear Distortion Using the Multi-Canonical Monte Carlo Method and the Split Step

Fourier Method”, ICCT Enformatika Conference (Vienna, Austria – 2006).

C34. I. Neokosmidis, T. Kamalakis, T. Sphicopoulos “Performance Estimation of Bursty Wavelength

Division Multiplexing Networks”, presented at CSNDSP (Patras – 2006).

C35. T. Kamalakis, T. Sphicopoulos, S. Sheikh Muhammad, E. Leitgeb, “Estimation of Power

Scintillation Statistics in Free Space Optical Links Using the Multi-Canonical Monte Carlo

Method”, presented at CSNDSP (Patras – 2006).

C36. T. Kamalakis, I. Neokosmidis, T. Sphicopoulos and D. Syvridis, “Accuracy of the Tight

Binding Approximation For The Description of the Photonic Crystal Coupled Cavities”

presented at SPIE Photonics West (2006).

C37. I. Neokosmidis, T. Sphicopoulos and D. Syvridis, “Performance Comparison of Advanced

Optical Modulation Formats in Wavelength Division Multiplexing (WDM) Systems

Employing G.655 Fibers” presented at SPIE Photonics West (2006).

C38. I. Neokosmidis, T. Kamalakis and T. Sphicopoulos “Estimation of the Four-Wave Mixing

Distortion Statistics using the Multi-Canonical Monte Carlo Method” to be presented in the

SPIE International Congress on Optics and Optoelectronics 28 August - 2 September

2005,Warsaw, Poland.

C39. Y. Kopsinis, Y.; J.S. Thompson, B. Mulgrew, I. Neokosmidis, T. Kamalakis, T. Sphicopoulos,

“Electronic suppression of the four wave mixing-induced distortion in WDM optical

communication systems”, Optical Fibre Communications and Electronic Signal Processing

(2005).

C40. T. Kamalakis, I. Neokosmidis and T. Sphicopoulos “Analysis of Photonic Crystal Coupler

Tolerance Using Coupled Mode Theory” to be presented in the SPIE International Congress on

Optics and Optoelectronics 28 August - 2 September 2005,Warsaw, Poland.

C41. T. Kamalakis and T. Sphicopoulos “Application of the Tight Binding Formalism in the

Analysis of Finite Coupled Optical Resonator Chains”, 4th European Symposium on Photonic

Crystals ESPC 2005, Barcelona, Spain.

C42. M. Mamalis, D. Varoutas, A. Chipouras & T. Kamalakis “Simple Design of Photonic Crystal

MMI Couplers”, WSEAS Transactions on Communications, Issue 2, vol 2, pp. 334, July 2003.

C43. J. Neokosmidis, T. Kamalakis, A. Chipouras and D. Varoutas “Evaluation of the Proabability

Density Function of the Four Wave Mixing Noise”, WSEAS Transactions on

Communications, Issue 2, Vol. 2, pp. 346, July 2003.

C44. Thomas Kamalakis, Thomas Sphicopoulos and Dimitris Syvridis, “Design of an Arrayed

Waveguide Grating with flat spectral response” SPIE Optoelectronics 2002, Integrated

Optoelectronic Devices, San Jose.


Page 16 / 48

Citations

• The scopus database currently lists 387 citations (excluding self scitations of all authors)

while the h-index is equal to 11,

http://www.scopus.com/authid/detail.url?authorId=6603137301#

• Google scholar, lists 762 citations,

https://scholar.google.gr/citations?user=acIXgSsAAAAJ&hl=el

Other interests

• Entusiastic science fiction fan (books, movies and TV series).

• Amateur (and very beginner!) guitar player.

• DIY technician around the house (usually with dreadful consequences).

• Social network enthusiast (currently maintains HUA’s group page in linked-in.com and a

youtube channel with a variety of personal online lectures in Greek).

• President of the teaching staff union at Harokopio since 2012.

• Jogging enthusiast (depending on the mood!).


Page 17 / 48

Abstracts and Citations of Journal Papers

J1. P. Kanakis, T. Kamalakis, and T. Sphicopoulos, "Designing photonic crystal waveguides for

broadband four-wave mixing applications," Opt. Lett. 40, 1041-1044 (2015).

We present photonic crystal waveguide designs which exhibit large four-wave mixing efficiencies over a wide wavelength region.

These designs are identified using an optimization process taking into account sophisticated figure-of-merits that depend on the

pump bandwidth and the signal/pump tunability. The obtained designs achieve up to −18.9 dB conversion efficiency, tunable

over a 10 nm tunability range. We also present alternative designs that are less efficient but have smaller power requirements

and are far more compact.

J2. Vasilopoulou, M., Georgiadou, D.G., Soultati, A., Douvas, A.M., Papadimitropoulos, G.,

Davazoglou, D., Pistolis, G., Stathopoulos, N.A., Kamalakis, T., Alexandropoulos, D., Vainos, N.,

Politi, C.T., Palilis, L.C., Couris, S., Coutsolelos, A.G., Argitis, P. “Solution processed multi-color

organic light emitting diodes for application in telecommunications”, Microelectronic Engineering,

145, pp. 21-28 (2015).

In this work we present an all solution processing scheme for the fabrication of the three primary colors, (R-G-B), emitting

organic light-emitting diodes (OLEDs) via efficient color tuning of a blue organic semiconducting (OSC) thin film, in particular

the poly[9,9-di-(2′-ethylhexyl)fluorenyl-2,7-diyl] (PF), in which different color fluorescent emitters are dispersed to define the

final emitting color and thus to simplify the different color device fabrication. The transmission speed of the fabricated OLEDs

was also examined for possible application in interactive telecommunications. To increase the response speed of the different color

devices we altered both the device geometry and the electron injection efficiency. To this end we increased the emissive layer

thickness and decreased the device emissive area and we also performed engineering of the cathode interfaces through the

incorporation of solution processed porphyrin interlayers in order to lower the electron injection barrier height. The final devices

exhibited improved operational characteristics and, consequently, modulation speeds.

J3. Margariti, K., Kamalakis, T., “Performance of coherent detection in optical wireless systems for

high speed indoor communications”, Optical and Quantum Electronics, 47 (5), pp. 985-1003 (2015).

At a time of dramatically increasing bandwidth demand, the choice of the broadband technology adapted to future indoor

applications, deserves serious consideration in the near term. Optical wireless technology goes beyond the capabilities of

conventional radio communication systems and presents a realistic supplement to its counterpart. In this paper, a high-speed

optical wireless communication system based on coherent reception technology is studied. Our analysis includes laser phase

noise which, to the extent of our knowledge, has not been adequately addressed in the literature in the field of optical wireless. We

also consider the influence of multipath-induced distortion. Our results indicate that coherent detection may significantly

alleviate the power budget of line-of-sight and non-line-of-sight configurations. It can enable Gb/s wireless data transmission

under moderate transmission powers consistent with eye safety regulations and the operational properties of optical transmitters

typically found in the commercial marketplace.

J4. Kamalakis, T., Alexandropoulos, D., Vainos, N. “Efficient design of polymer micro-ring resonator

filters based on coupled mode theory and finite difference mode solver”, Optics Communications, 339,

pp. 123-128 (2015).

Polymer photonics have been identified as a strong candidate technology for producing low-cost optical devices. In this paper, we

provide a time efficient framework for designing polymer micro-ring devices based on Coupled Mode Theory (CMT) and a Finite

Difference Mode Solver. We benchmark two alternative methods for modeling the coupling regions of the micro-ring filter in 3D.

We deduce that compared to full blown finite difference time domain simulations, CMT can provide accurate results in just a

small fraction of time. The proposed model allows the study of bending losses on the spectral properties of the device, that can be

otherwise modelled using time demanding FDTD or less accurate simplified analytical expressions.

J5. Dede, G., Kamalakis, T., Sphicopoulos, T. “Convergence properties and practical estimation of the

probability of rank reversal in pairwise comparisons for multi-criteria decision making problems”,

European Journal of Operational Research, 241 (2), pp. 458-468 (2014).

In this paper, we address the impact of uncertainty introduced when the experts complete pairwise comparison matrices, in the

context of multi-criteria decision making. We first discuss how uncertainty can be quantified and modeled and then show how

the probability of rank reversal scales with the number of experts. We consider the impact of various aspects which may affect the

estimation of probability of rank reversal in the context of pairwise comparisons, such as the uncertainty level, alternative


Page 18 / 48

preference scales and different weight estimation methods. We also consider the case where the comparisons are carried out in a

fuzzy manner. It is shown that in most circumstances, augmenting the size of the expert group beyond 15 produces a small

change in the probability of rank reversal. We next address the issue of how this probability can be estimated in practice, from

information gathered simply from the comparison matrices of a single expert group. We propose and validate a scheme which

yields an estimate for the probability of rank reversal and test the applicability of this scheme under various conditions. The

framework discussed in the paper can allow decision makers to correctly choose the number of experts participating in a pairwise

comparison and obtain an estimate of the credibility of the outcome

Citations:

R1. Liu, B., Shen, Y., Zhang, W., Chen, X., Wang, X. An interval-valued intuitionistic fuzzy principal component analysis model-based method for complex

multi-attribute large-group decision-making (2015) European Journal of Operational Research, 245 (1), pp. 209-225.

J6. Kanakis, P., Kamalakis, T., Sphicopoulos, T., "Designing slow-light photonic crystal waveguides

for four-wave mixing applications", Optics Letters, 39 (4), pp. 884-887 (2014).

We discuss the optimization of photonic crystal waveguides for four-wave mixing (FWM) applications, taking into account

linear loss and free-carrier effects. Suitable figures of merit are introduced in order to guide us through the choice of practical,

high-efficiency designs requiring relatively low pump power and small waveguide length. In order to realistically perform the

waveguide optimization process, we propose and validate an approximate expression for the FWM efficiency, which significantly

alleviates our numerical calculations. Promising waveguide designs are identified by means of an exhaustive search, altering

some structural parameters. Our approach aims to optimize the waveguides for nonlinear signal-processing applications based

on the FWM

J7. Kanakis, P., Kamalakis, T., Sphicopoulos, T. "Approximate expressions for estimation of four-wave

mixing efficiency in slow-light photonic crystal waveguides", Journal of the Optical Society of America

B: Optical Physics, 31 (2), pp. 366-375 (2014).

We present approximate analytical expressions for the estimation of the degenerate four-wave mixing conversion efficiency in

slow-light photonic crystal waveguides (PCWs). The derived formulas incorporate the different effective modal areas and the

frequency-dependent linear and nonlinear parameters of the pump, signal, and idler waves. The influence of linear loss, two-

photon absorption, and free-carrier generation is also accounted for. Numerical solution of the coupled propagation equations is

used to verify the validity of the proposed expressions under different values of the linear and nonlinear parameters of the

waveguide. It is shown that the derived expressions provide an accurate estimation of the conversion efficiency and are thus

expected to be useful in the design of PCWs for nonlinear signal-processing applications.

J8. P. Kanakis, T. Kamalakis, and T. Sphicopoulos, 'Optimization of the storage capacity of slow light

photonic crystal waveguides', Optics Letters, 37 (22), pp. 4585-4587 (2012).

The storage capacity of slow light photonic crystal waveguides is maximized using a systematic procedure based on the

optimization of various parameters of the structure. Both optical loss and dispersion-induced broadening are incorporated into

the model. The results indicate that this procedure can provide up to a threefold increase in storage capacity.

J9. P. Kanakis, T. Kamalakis, and T. Sphicopoulos, 'Numerical analysis of soliton propagation in

photonic crystal slab waveguides for signal processing applications', JOSA B, Vol. 29, Issue 10, pp.

2787-2796 (2012).

The delay performance of slow light optical pulses inside photonic crystal slab waveguides is considered in the linear and

nonlinear propagation regime from both a theoretical and an application point of view. The numerical model used relies on a

nonlinear envelope propagation equation that includes the effects of second- and third-order dispersion, optical losses, and self-

phase modulation. It is numerically shown that for rates of 40 Gb/s and 100 Gb/s, nonlinear solitary pulses experience less

broadening than the linear case and can therefore be used to obtain larger delays. The influence of propagation losses on the

soliton broadening factor is also incorporated and discussed. The results demonstrate the potential of implementing a variety of

linear and nonlinear signal processing applications in photonic crystal waveguides including optical buffering.

J10. Dede, G., Kamalakis, T., Varoutas, D. “Evaluation of optical wireless technologies in home

networking: An analytical hierarchy process approach”, Journal of Optical Communications and

Networking, 3 (11), art. no. 6059258, pp. 850-859 (2011).

Home networks (HNs) will play a crucial role in achieving broadband service delivery and enabling the future Internet. Optical

wireless (OW) is a promising technology for realizing this vision. This paper presents the main results of a roadmapping effort

undertaken within the project ICT-OMEGA concerning the potential of OW HNs. Using the framework of the analytic

hierarchy process, five different optical home networking scenarios are identified and ranked. Within this framework, the


Page 19 / 48

importance of several economic, social and performance criteria is also evaluated. The obtained results are justified taking into

account the technical particularities of each architecture. A sensitivity analysis is also performed to further elaborate on the

results.

Citations:

R2. Wei, C.-C., Wu, F.-M., Chen, Z.-Y., Lin, C.-T., Huang, Y.-S., Chen, Y.-J., Chi, S., Indoor VLC system with multiple LEDs of different path lengths

employing space-time block-coded DMT/CAP modulation [Invited], (2015) Journal of Optical Communications and Networking, 7 (3), pp. A459-

A466.

R3. Saleem, F., Salim, N., Al-Ghamdi, A.A.-M., Ullah, Z., Building framework for ict investments evaluation: Value on investment perspective (2015)

ARPN Journal of Engineering and Applied Sciences, 10 (3), pp. 1074-1079.

R4. Lager, I.E., Staszewski, R.B., Smolders, A.B., Leenaerts, D.M.W., Ultra-high data-rate wireless transfer in a saturated spectrum - New paradigms, (2014)

European Microwave Week 2014: Connecting the Future, EuMW 2014 - Conference Proceedings; EuMC 2014: 44th European Microwave Conference,

art. no. 6986585, pp. 917-920.

R5. Wu, F.-M., Lin, C.-T., Wei, C.-C., Chen, C.-W., Chen, Z.-Y., Huang, H.-T., 3.22-gb/s wdm visible light communication of a single rgb led employing

carrier-less amplitude and phase modulation, (2013) Optical Fiber Communication Conference, OFC 2013,

R6. Saleem, F., Salim, N., Fayoumi, A.G., Al-Ghamdi, A.S., Ullah, Z., Comprehensive study of Information and Communication Technology investments:

A case study of Saudi Arabia, (2013) Information (Japan), 16 (11), pp. 7875-7893.

R7. Kubo, T., Yamada, T., Suzuki, K.-I., Yoshimoto, N., Umeki, T., Asobe, M., Kolev, D.R., Matsumoto, M., 1.25-Gb/s 2-m indoor visible light transmission

employing wavelength conversion with quasi phase matching device, (2012) 2012 International Workshop on Optical Wireless Communications,

IWOW 2012, art. no. 6349695, .

R8. Wu, F.-M., Lin, C.-T., Wei, C.-C., Chen, C.-W., Huang, H.-T., Ho, C.-H., 1.1-Gb/s white-LED-based visible light communication employing carrier-less

amplitude and phase modulation, (2012) IEEE Photonics Technology Letters, 24 (19), art. no. 6253230, pp. 1730-1732. Cited 23 times.

J11. G. Ntogari, T. Kamalakis, T. Sphicopoulos, 'Analysis of indoor multiple-input multiple-output

coherent optical wireless systems', Journal of Lightwave Technology, 30 (3), art. no. 6084693, pp. 317-

324 (2012).

Indoor optical wireless systems (OWS) provide an attractive alternative for realizing next generation home access networks.

Homodyne detection can be employed in order to enhance receiver sensitivity and spectral efficiency. In this paper, the

application of space-time block-coding (STBC) techniques in a coherent OWS is theoretically and numerically investigated,

taking into account the noise characteristics at the receiver. The performance of STBC multiple-input multiple-output (MIMO)

systems, employing two transmit elements, is compared against single-input/single-output systems operating with the same

total optical transmit power. It is shown that STBC is an effective means to increase the capacity of coherent OWS, improve their

coverage, and decrease the required optical power at the transmitter. These results demonstrate the usefulness of MIMO

techniques in the realization of future optical wireless local area networks.

Citations:

R9. Niu, M., Cheng, J., Holzman, J.F., Alamouti-type STBC for atmospheric optical communication using coherent detection, (2014) IEEE Photonics

Journal, 6 (1), art. no. 6725602, .

R10. Chen, X.H., Hong, W.X., Qian, C., Yang, T., Wei, W., Indoor MIMO visible light communication system using filtering layer, (2014) 2014

OptoElectronics and Communication Conference, OECC 2014 and Australian Conference on Optical Fibre Technology, ACOFT 2014, art. no. 6888273,

pp. 790-792.

R11. Petković, M.I., Dordević, G.T., Milić, D.N., BER performance of IM/DD FSO system with OOK using APD receiver, (2014) Radioengineering, 23 (1), pp.

480-487.

R12. Optical communication using coherent detection with space-time coding in the presence of atmospheric turbulence, (2013) 2013 13th Canadian

Workshop on Information Theory, CWIT 2013, art. no. 6621615, pp. 175-178.,

R13. Alsaadi, F.E., Alhartomi, M.A., Elmirghani, J.M.H., Fast and efficient adaptation algorithms for multi-gigabit wireless infrared systems, (2013) Journal

of Lightwave Technology, 31 (23), art. no. 6655938, pp. 3735-3751.

R14. Du, H., Green, R., Chen, Y., Optical wireless 2×2 indoor MIMO system based on OOK modulation, (2013) International Conference on Transparent

Optical Networks, art. no. 6602886, .

R15. Niu, M., Cheng, J., Holzman, J.F., Space-time coded MPSK coherent MIMO FSO systems in gamma-gamma turbulence, (2013) IEEE Wireless

Communications and Networking Conference, WCNC, art. no. 6555263, pp. 4266-4271.

R16. Ghassemlooy, Z., Le Minh, H., Rajbhandari, S., Perez, J., Ijaz, M., Performance analysis of ethernet/fast-ethernet free space optical communications in a

controlled weak turbulence condition, (2012) Journal of Lightwave Technology, 30 (13), art. no. 6179957, pp. 2188-2194. Cited 21 times.

J12. Fitrakis, E.-P., Kamalakis, T., Sphicopoulos, T. ‘Slow light in insulator-metal-insulator plasmonic

waveguides’, OSA Journal of the Optical Society of America B: Optical Physics, 28 (9), pp. 2159-2164

(2011).

We study numerically the slow-light capability of insulator–metal–insulator (IMI) plasmonic waveguides. Metal-induced losses

are included in the calculation of the dispersion relations, and their effect on the slow-light properties of the waveguide is

investigated. In addition to reducing the propagation lengths of surface plasmon polaritons, losses are found to limit the

achievable slowdown factors and the practical potential of the device. To alleviate the problem, we consider active materials.


Page 20 / 48

Using realistic parameters, we find that a spectral region is then formed where a slow-light pulsed signal can achieve infinite

propagation lengths or be amplified. The optical buffering capabilities of the IMI waveguide with losses are analyzed, and we

conclude that while losses limit the buffering capabilities of the passive device, the use of active materials may combat the problem

effectively from an application point of view.

Citations:

R17. Li, C., Qi, D., Wang, Y., Zhang, X., Wideband slow light based on plasmon-induced transparency at telecom frequency, (2015) Optics Communications,

351, art. no. 20087, pp. 26-29.

R18. Aldawsari, S., Wei, L., Liu, W.-K., Theoretical Study of Hybrid Guided Modes in a Multilayer Symmetrical Planar Plasmonic Waveguide, (2015)

Journal of Lightwave Technology, 33 (15), art. no. 7115023, pp. 3198-3206.

R19. Li, C., Qi, D., Xin, J., Hao, F., Metal-insulator-metal plasmonic waveguide for low-distortion slow light at telecom frequencies, (2014) Journal of Modern

Optics, 61 (8), pp. 627-630.

R20. Li, C., Zhang, X., Wang, Y., Song, Y., Fine tuning slow group velocity and small pulse broadening of surface plasmon polaritons along metal-nonlinear

Kerr medium interface, (2013) Optics Communications, 298-299, pp. 246-249.

R21. Lindquist, N.C., Jose, J., Cherukulappurath, S., Chen, X., Johnson, T.W., Oh, S.-H., Tip-based plasmonics: Squeezing light with metallic nanoprobes,

(2013) Laser and Photonics Reviews, 7 (4), pp. 453-477.

R22. Vázquez-Guardado, A., López-Galmiche, G., De León, I., Sánchez-Mondragón, J.J., Boyd, R.W., Finite Lorentzian-like gain in the analysis of gain

assisted slow surface plasmon-polaritons, (2012) Frontiers in Optics, FIO 2012, .

R23. Vázquez-Guardado, A., López-Galmiche, G., De León, I., Sánchez-Mondragón, J.J., Boyd, R.W., Analysis of gain assisted slow surface plasmon-

polaritons in a symmetrically cladded metal slab structure, (2012) Frontiers in Optics, FIO 2012, .

R24. Hu, B., Wang, Q.J., Zhang, Y., Slowing down terahertz waves with tunable group velocities in a broad frequency range by surface magneto plasmons,

(2012) Optics Express, 20 (9), pp. 10071-10076.

R25. White, T.P., Sukhorukov, A.A., Transition from slow and frozen to superluminal and backward light through loss or gain in dispersion-engineered

waveguides, (2012) Physical Review A - Atomic, Molecular, and Optical Physics, 85 (4), art. no. 043819,

R26. Li, C., Zhou, Y.-S., Wang, H.-Y., Plasmonic band structures and optical properties of subwavelength metal/dielectric/metal Bragg waveguides, (2012)

Optics Express, 20 (7), pp. 7726-7740.

R27. Miyata, M., Takahara, J., Field enhancement by longitudinal compression of plasmonic slow light, (2012) Journal of Applied Physics, 111 (5), art. no.

053102.

J13. Dede, G., Kamalakis, T., Varoutas, D. “Towards a roadmap for future home networking systems:

An analytical hierarchy process approach”, IEEE Systems Journal, 5 (3), art. no. 5892908, pp. 374-384

(2011).

Home Networking Systems (HNS) play a crucial role in achieving broadband service delivery to end users and are quickly

becoming the next arena for telecom operators and companies. This emphasizes the need for a technology roadmap in order to

address several key issues associated with the deployment of these systems. The present paper presents the results of the

European project ICT-OMEGA road mapping effort for future HNS focusing on the most indicative and critical function,

namely that of network extension. Taking into account the various social, economic and technological factors, three alternative

technologies, namely the 802.11n, 60 GHz and Power Line Communications (PLC) have been ranked, using the Analytic

Hierarchy Process (AHP). Based on a number of expert surveys, the technology value of each solution is calculated. The results

indicate that PLC possesses the largest potential for delivering broadband services in the home environment but also underlines

the need for hybrid solutions. The results also reveal various crucial aspects of HNS deployment which are related to current

research and standardization activities. A sensitivity analysis is also performed to ascertain the reliability of the results.

Citations:

R28. Lai, S.W., Shabehpour, N., Messier, G.G., Lampe, L., Performance of wireless/power line media diversity in the office environment, (2014) 2014 IEEE

Global Communications Conference, GLOBECOM 2014, art. no. 7037260, pp. 2972-2976.

J14. N. Mantzoukis, C.S. Petrou, A. Vgenis, I. Roudas, T. Kamalakis, ‘Performance comparison of

electronic PMD equalizers for coherent PDM QPSK systems’, IEEE/OSA Journal of Lightwave

Technology, 29 (11), art. no. 5741817, pp. 1721-1728 (2011).

Polarization division multiplexed (PDM) quadrature phase-shift keying (QPSK) coherent optical systems employ blind adaptive

linear electronic equalizers for polarization-mode dispersion (PMD) compensation. In this paper, we compute the performance of

various adaptive, fractionally spaced, feed-forward electronic equalizers, using the outage probability as a criterion. A parallel

programming implementation of the multicanonical Monte Carlo method is developed, which automatically performs concurrent

loop computation on multicore processors, for the estimation of the tails of the outage probability distribution. The constant

modulus algorithm (CMA), the decision-directed least mean squares (DD-LMS), and their combination are applied for the

adaptation of electronic equalizer filter coefficients. In the exclusive presence of PMD, we demonstrate that half-symbol-period-

spaced CMA-based adaptive electronic equalizers perform slightly better than their DD-LMS counterparts, at links with strong

PMD, whereas the opposite holds true at the weak PMD regime. It is shown that the successive application of CMA and DD-

LMS with 20 complex, half-symbol-period-spaced taps per finite impulse response filter is adequate to reduce the outage


Page 21 / 48

probability of coherent PDM QPSK systems to less than 10-5, for a mean differential group delay of more than twice the symbol

period.

Citations:

R29. Taher, K.A., Majumder, S.P., Rahman, B.M.A., Performance of multilevel modulation formats in 92 Gb/s systems in the presence of PMD and nonlinear

effects, (2014) 1st International Conference on Electrical Engineering and Information and Communication Technology, ICEEICT 2014, art. no.

6919043, .

R30. Soliman, G., Yevick, D., Multicanonical determination of the symbol error ratio of WDM polarization multiplexed QPSK systems, (2014) Journal of

Optical Communications, 35 (4), pp. 335-338.

R31. Taher, K.A., Majumder, S.P., Rahman, B.M.A., Performance of different modulation formats in 40 Gb/s optical systems in the presence of polarization

mode dispersion and nonlinear effects, (2014) 1st International Conference on Electrical Engineering and Information and Communication

Technology, ICEEICT 2014, art. no. 6919042,

R32. Wabnitz, S., Importance sampling analysis of PMD outages in PDM-QPSK coherent nonlinear transmissions, (2013) IEEE Photonics Technology

Letters, 25 (3), art. no. 6384668, pp. 264-267.

J15. Kamalakis, T., Walewski, J.W., Ntogari, G., Mileounis, G. “Empirical volterra-series modeling of

commercial light-emitting diodes”, Journal of Lightwave Technology, 29 (14), art. no. 5771519, pp.

2146-2155 (2011).

Light-emitting diodes (LEDs) constitute a low-cost alternative for optical data transmission of up to ~ 1 Gb/s. What

differentiates such applications from, e.g., backhaul optical networks, is the fact that apart from their data throughput, LEDs are

generally not as well characterized by the manufacturer as, for example, optical fiber amplifiers. While for simple modulation

formats, this lack of knowledge is not a severe impediment; in any other situation, one may face rather complex behaviors of

commercial LEDs. In this paper, the main electro-optical characteristics of LEDs are discussed, and it is shown that some

popular simple nonlinear models available in the literature are inadequate in describing their dynamics. As a way out of this

malady, we present a reverse-engineering approach that is based on Volterra expansions of the electro-optical characteristic

function of LEDs, enabling the introduction of a realistic empirical model for commercial devices.

Citations:

R33. Glentis, G.-O., An efficient implementation of the Memory Improved Proportionate Affine Projection Algorithm, (2016) Signal Processing, 118, art. no.

5828, pp. 25-35.

R34. Ying, K., Yu, Z., Baxley, R.J., Qian, H., Chang, G.-K., Zhou, G.T., Nonlinear distortion mitigation in visible light communications, (2015) IEEE Wireless

Communications, 22 (2), art. no. 7096283, pp. 36-45.

R35. SebastiãO, S.O., Ribeiro, R.M., Silva, V.N.H., Barbero, A.P.L., Optoelectronic non-linearity of visible wavelength LEDs at MHz frequencies intended for

PMMA SI-POF links, (2014) POF 2014 - 23rd International Conference on Plastic Optical Fibers, Proceedings, pp. 294-298.

R36. Yao, S., Xu, H., Wang, L., Zhou, T., Qian, H., Research of adaptive predistortion technique for nonlinear ledswith memory effects, (2014) Zhongguo

Jiguang/Chinese Journal of Lasers, 41 (11), art. no. 1105007, .

R37. Qian, H., Yao, S.J., Cai, S.Z., Zhou, T., Adaptive postdistortion for nonlinear LEDs in visible light communications, (2014) IEEE Photonics Journal, 6 (4),

art. no. 6837447,

R38. Yu, Z., Baxley, R.J., Zhou, G.T., Achievable data rate analysis of clipped FLIP-OFDM in optical wireless communication, (2012) 2012 IEEE Globecom

Workshops, GC Wkshps 2012, art. no. 6477751, pp. 1203-1207

J16. N. Avaritsiotis, T. Kamalakis, T. Sphicopoulos, ‘On the effectiveness of coupled mode theory in the

analysis of photonic crystal coupled resonator devices’, IEEE Journal of Lightwave Technology, 29 (5),

art. no. 5701634, pp. 736-743 (2011).

Coupled resonator photonic crystal devices may find important applications in future integrated nanophotonic circuits. These

devices are well suited for coupling of mode analysis, which usually requires much less computational resources compared with

finite-difference time domain (FDTD) schemes. Coupled mode models also provide a useful physical insight in the device

operation. In this paper, we present a general coupled mode theoretic model for the treatment of coupled cavity devices

incorporating various phenomena such as dispersion, frequency variation of the coupling coefficients, nonadjacent cavity

coupling, and waveguide mode self coupling. The model is validated comparing its results against the FDTD method and the

strength of the underlying assumptions is highlighted. Various approximations that can lead to further simplification of the

coupled mode model are also discussed. It is shown that, unless the device transfer function possesses very sharp resonances,

coupled mode analysis can provide an accurate device description.

Citations:

R39. Zaghloul, A., D8. Analysis of optical fiber by using SEIM with VM: Application to optical fiber directional coupler, (2012) National Radio Science

Conference, NRSC, Proceedings, art. no. 6208573, pp. 619-625.


Page 22 / 48

J17. G. Ntogari, T. Kamalakis, J. Walewski, T. Sphicopoulos, ‘Combining Illumination Dimming

Based on Pulse-Width Modulation With Visible-Light Communications Based on Discrete Multitone’,

IEEE/OSA Journal of Optical Communications and Networking, 3 (1), pp. 56-65 (2011).

In the field of indoor wireless networks, visible-light communications is garnering increasing attention. One of the type of

emitters used in this technology is white light-emitting diodes, which can synergistically provide both illumination and data

transmission. Discrete multitone modulation is attractive for visible-light communications. One of the issues to be addressed in

these synergetic use cases is how to incorporate light dimming while not corrupting the communication link. In this paper, the

performance of a visible-light communication system combining pulse-width modulation for dimming and discrete multitone for

data transmission was investigated. Performance indicators were addressed, i.e., the signal-to-interference ratio due to dimming

and the achievable bit-error ratio in the absence of additional noise. By aid of simulations it was shown that practical

communication is only feasible when the line rate of the dimming modulation is at least twice the frequency assigned to the

largest multitone subcarrier frequency. The results demonstrate that under this constraint and when using a suitably modified

demodulation scheme, dimming does not influence the data transmission.

Citations:

R40. Hou, Y., Xiao, S., Zheng, H., Hu, W., Multiple access scheme based on block encoding time division multiplexing in an indoor positioning system

using visible light, (2015) Journal of Optical Communications and Networking, 7 (5), pp. 489-4958.

R41. Wang, Q., Wang, Z., Dai, L., Asymmetrical Hybrid Optical OFDM for Visible Light Communications with Dimming Control, (2015) IEEE Photonics

Technology Letters, 27 (9), art. no. 7046383, pp. 974-977.

R42. Shinwasusin, E.-A., Charoenlarpnopparut, C., Suksompong, P., Taparugssanagorn, A., Modulation performance for visible light communications,

(2015) 2015 6th International Conference on Information and Communication Technology for Embedded Systems, IC-ICTES 2015, art. no. 7110818, .

R43. Lee, S.H., Jung, S.-Y., Kwon, J.K., Modulation and coding for dimmable visible light communication, (2015) IEEE Communications Magazine, 53 (2),

art. no. 7045402, pp. 136-143.

R44. Imamura, Y., Kawamura, T., Matsumoto, M., Local area network using RTS/CTS in VLC, (2014) 2014 9th International Symposium on Communication

Systems, Networks and Digital Signal Processing, CSNDSP 2014, art. no. 6923958, pp. 910-913.

R45. Sung, J.-Y., Chow, C.-W., Yeh, C.-H., Simultaneous color control and visible light communication using dimming-discrete-multi-tone (DMT), (2014)

2014 OptoElectronics and Communication Conference, OECC 2014 and Australian Conference on Optical Fibre Technology, ACOFT 2014, art. no.

6888050, pp. 207-209.

R46. Chen, J., You, X., Zheng, H., Yu, C., MPPM dimming control for OFDM-based visible light communication systems, (2014) 2014 IEEE International

Conference on Communication Systems, IEEE ICCS 2014, art. no. 7024807, pp. 268-272.

R47. Wang, Z., Wang, S., Jiang, B., Jiang, L., A design and realization on low cost light wireless communication system, (2014) Proceedings of the 2014 9th

IEEE Conference on Industrial Electronics and Applications, ICIEA 2014, art. no. 6931310, pp. 1005-1009.

R48. Jeong, J.-D., Lim, S.-K., Jang, I.-S., Kim, M.-S., Kang, T.-G., Chong, J.-W., Novel architecture for efficient implementation of dimmable VPPM in VLC

lightings, (2014) ETRI Journal, 36 (6), pp. 905-912.

R49. Chen, J., You, X., Zheng, H., Yu, C., Excess signal transmission with dimming control pattern in indoor visible light communication systems, (2014)

Proceedings of SPIE - The International Society for Optical Engineering, 9270, art. no. 927014, .

R50. Sung, J.-Y., Chow, C.-W., Yeh, C.-H., Dimming-discrete-multi-tone (DMT) for simultaneous color control and high speed visible light communication,

(2014) Optics Express, 22 (7), pp. 7538-7543. Cited 7 times.

R51. Yu, Z., Baxley, R.J., Zhou, G.T., Brightness control in dynamic range constrained visible light OFDM systems, (2014) 2014 23rd Wireless and Optical

Communication Conference, WOCC 2014, art. no. 6839941, .

R52. Drost, R.J., Sadler, B.M., Constellation design for channel precompensation in multi-wavelength visible light communications, (2014) IEEE

Transactions on Communications, 62 (6), art. no. 6809190, pp. 1995-2005.

R53. Yun, K., Lee, C., Ahn, K.-I., Lee, R., Jang, J.-S., Kwon, J.K., Optimal signal amplitude of orthogonal frequency-division multiplexing systems in

dimmable visible light communications (2014) Journal of the Optical Society of Korea, 18 (5), pp. 459-465.

R54. Lim, S.-K., Ruling, K.G., Kim, I., Jang, S.I., Entertainment lighting control network standardization to support VLC services, (2013) IEEE

Communications Magazine, 51 (12), art. no. 6685756, pp. 42-48.

R55. Kim, S.M., Kim, S.-M., Wireless visible light communication technology using optical beamforming, (2013) Optical Engineering, 52 (10), art. no. 106101

R56. Elgala, H., Little, T.D.C., Reverse polarity optical-OFDM (RPO-OFDM): Dimming compatible OFDM for gigabit VLC links, (2013) Optics Express, 21

(20), pp. 24288-24299.

R57. Lee, S.H., Ahn, K.-I., Kwon, J.K., Multilevel transmission in dimmable visible light communication systems, (2013) Journal of Lightwave Technology,

31 (20), art. no. 6594857, pp. 3267-3276.

R58. Sevincer, A., Bhattarai, A., Bilgi, M., Yuksel, M., Pala, N., LIGHTNETs: Smart lighting and mobile optical wireless networks - A survey, (2013) IEEE

Communications Surveys and Tutorials, 15 (4), art. no. 6497926, pp. 1620-1641.

R59. Lee, S.J., Kwon, J.K., Jung, S.Y., Kwon, Y.H., Simulation modeling of visible light communication channel for automotive applications, (2012) IEEE

Conference on Intelligent Transportation Systems, Proceedings, ITSC, art. no. 6338610, pp. 463-468.

R60. Chia-nan Lin, “Analysis for luminous efficiency of white LEDs with Pulse Width Modulation”, Master Thesis, hesis.lib.ncu.edu.tw/ETD-db/ETD-

search/view_etd?URN=982206019#anchor

R61. Sterckx, K.L., Saengudomlert, P., «Visible light communication via dimmable LED lamps using pulses of equal shape» (2011) 16th European

Conference on Networks and Optical Communications, NOC 2011, art. no. 5996235, pp. 48-51.


Page 23 / 48

J18. T. Rokkas, D. Katsianis, T. Kamalakis, D. Varoutas, ‘Economics of Time and Wavelength Domain

Multiplexed Passive Optical Networks’, IEEE/OSA Journal of Optical Communications and

Networking, Vol. 2, Issue 12, pp. 1042-1051 (2010).

Passive optical networks (PONs) are being widely considered as a means to implement fiber-to-the-home (FTTH) and deliver

broadband access to business and home users. However, technical and consequently regulatory and economic complexities arise

in light of their deployment. In this paper, an evaluation of the business prospects of time division multiplexed (TDM) and

wavelength division multiplexed (WDM) PON architectures for FTTH deployments under different rollout conditions is

performed, based on the ECOSYS techno-economic methodology and tool. The importance of various cost components (fiber

installation, optoelectronic components, etc.) is discussed. Using sensitivity analysis, the effect of various parameters such as

duct availability, cost of civil works, etc. on the prospects of the investment are investigated. These results reveal several

important techno-economic aspects that should be considered by telecom operators, regulators, and policy makers towards a

successful FTTH deployment strategy.

Citations:

R62. Matrakidis, C., Orphanoudakis, T.G., Stavdas, A., Fernández-Palacios Giménez, J.P., Manzalini, A., HYDRA: A scalable ultra long reach/high capacity

access network architecture featuring lower cost and power consumption, (2015) Journal of Lightwave Technology, 33 (2), art. no. 6975021, pp. 339-

348. Cited 1 time.

R63. Almalaq, Y., Matin, M.A., Performance analysis of bidirectional broadband passive optical network using erbium doped fiber amplifier, (2014)

Proceedings of SPIE - The International Society for Optical Engineering, 9216, art. no. 92161P.

R64. Tahon, M., Verbrugge, S., Willis, P.J., Botham, P., Colle, D., Pickavet, M., Demeester, P., Real options in telecom infrastructure projects - A tutorial,

(2014) IEEE Communications Surveys and Tutorials, 16 (2), art. no. 6553298, pp. 1157-1173.

R65. Shuhada Ahsan, N., Shahril Salleh, M., Abdullah, F., Migration strategy from legacy PON system into next generation PON system for low CAPEX

telco deployment in Malaysia, (2014) Jurnal Teknologi (Sciences and Engineering), 69 (3), pp. 31-42.

J19. Fitrakis, E.P., Kamalakis, T., Sphicopoulos, T. 'Slow-light dark solitons in insulator-insulator-

metal plasmonic waveguides', OSA Journal of the Optical Society of America B: Optical Physics, 27

pp. 1701-1706 (2010)

The potential of slow-light propagation in an insulator–insulator–metal plasmonic waveguide is studied. Due to the high

dispersion of the device in the frequency region where the signal group velocity is low, slow-light optical pulses broaden in time

and intersymbol interference occurs, limiting the achievable data rates and transmission distance. In order to overcome this

problem, we analytically and numerically investigate slow dark solitons in the normal dispersion regime of the waveguide. The

storing capability of the waveguide is analyzed from an application point of view.

R66. Li, C., Qi, D., Wang, Y., Zhang, X., Wideband slow light based on plasmon-induced transparency at telecom frequency, (2015) Optics Communications,

351, art. no. 20087, pp. 26-29.

R67. Dzedolik, I.V., Surface plasmon-polariton solitons and cnoidal waves at the boundary of dielectric crystal and metal (2014) Journal of Optics (United

Kingdom), 16 (12), art. no. 125002.

R68. Golmohammadi, S., Asghari-Sooreh, A., Abedi, K., Optical delay lines using coupled slab waveguides and ring resonator with a negative refractive

index core, (2014) Optik, 125 (19), pp. 5723-5726.

R69. Hu, B., Tao, J., Zhang, Y., Wang, Q.J., Magneto-plasmonics in graphene-dielectric sandwich, (2014) Optics Express, 22 (18), pp. 21727-21738. Cited 1

time.

R70. Li, C., Zhang, X., Wang, Y., Song, Y., Zhang, Z., Liu, F., Femtosecond surface plasmon pulse propagation with the balance between group velocity

dispersion and loss dispersion in a superlattice. (2013) Optics Communications, 307, pp. 96-100.

R71. Li, C., Zhang, X., Wang, Y., Song, Y., Fine tuning slow group velocity and small pulse broadening of surface plasmon polaritons along metal-nonlinear

Kerr medium interface, (2013) Optics Communications, 298-299, pp. 246-249.

J20. Mantzoukis, N.C., Petrou, C.S., Vgenis, A., Kamalakis, T., Roudas, I., Raptis, L. 'Outage

probability due to PMD in coherent PDM QPSK systems with electronic equalization' IEEE

Photonics Technology Letters, 22 (16), art. no. 5483144, pp. 1247-1249 (2010).

Polarization-division-multiplexed (PDM) quadrature phase-shift-keying (QPSK) coherent optical systems employ blind adaptive

electronic equalizers for polarization-mode dispersion compensation. In this letter, we compare the performance of fractionally

spaced, linear electronic equalizers, composed of four parallel finite impulse response (FIR) filters of various lengths, using the

outage probability as a performance criterion. The constant modulus algorithm is applied for the adaptation of FIR filter

coefficients. A parallel programming implementation of the multicanonical Monte Carlo method is adopted for the estimation of

the tails of the outage probability distribution. It is shown that less than 20 complex, half-symbol-period-spaced taps per FIR

filter suffice, in order to reduce the outage probability of PDM QPSK coherent optical systems to less than 10-5 , for a mean

differential group delay up to twice the symbol period.

Citations:


Page 24 / 48

R72. Zhang, K., Wang, J., Du, X., He, Z. Power penalty due to first-order PMD in optical OFDM/QAM and OFDM/OQAM transmission system, (2015)

Journal of Information and Computational Science, 12 (7), pp. 2815-2827.

R73. Xie, C., Winzer, P.J., Increasing polarization-mode dispersion tolerance of coherent receivers by joint optimization of chromatic dispersion and

butterfly equalizers, (2013) Optics InfoBase Conference Papers.

R74. Wabnitz, S., Importance sampling analysis of PMD outages in PDM-QPSK coherent nonlinear transmissions, (2013) IEEE Photonics Technology

Letters, 25 (3), art. no. 6384668, pp. 264-267.

J21. Dede, G., Kamalakis, T., Varoutas, D., Fuentetaja, R.G., Javaudin, J.P., “Evaluation of

technological and socio-economic issues affecting the deployment of home networks: evidence from the

ICT-OMEGA project”, Elsevier NETNOMICS: Economic Research and Electronic Networking , pp.

1-20 (2010).

Home networks (HNs) are rapidly becoming the next battlefield for various telecom carriers and companies. The European

project ICT-OMEGA seeks to enable the convergence of the diverse wireless and wireline technologies at the Medium Access

Control (MAC) layer. In such a world of converging, heterogeneous HN technologies, system designers needs to take into

account several technical, economic and social aspects that will effect the development and the rate of adoption of HNs by the

general public. Careful roadmapping is required to ensure a smooth transition from existing to the next generation HN systems.

The objective of this paper is to provide an evaluation of the key technological and socio-economic issues, which may affect the

deployment of HNs. Within the OMEGA project, such issues are addressed using surveys conducted by the project experts,

designed based on the Analytic Hierarchy Process (AHP). In this paper, the results of the surveys, conducted using pairwise

comparison (which is an important ingredient of AHP) are presented. Several critical aspects are identified and their importance

is weighted. The conclusions drawn are important for the overall roadmapping effort of future HN technologies.

Citations:

J22. G. Ntogari, T. Kamalakis, T. Sphicopoulos, 'Performance Analysis of Decision Feedback and

Linear Equalization schemes for Non-Directed Indoor Optical Wireless Systems', Journal of

Communications, Vol 4, No 8,pp. 565-571 (2009)

Indoor optical wireless systems provide an attractive alternative for realizing next generation Wireless Local Area Networks

(WLANs). In this paper, the potential of non-directed, equalized optical wireless systems is theoretically investigated, taking into

account the indoor channel impulse response and the characteristics of ambient light noise and thermal noise at the receiver.

Three modulation schemes, Pulse-Position-Modulation, On-Off Keying and Pulse Amplitude Modulation, are combined with

appropriate equalization methods in order to mitigate the effect of intersymbol interference induced by the infrared chanel. It is

shown that the various non-directed configurations can provide data rates of the order of 100Mb/s and beyond, over a medium

sized room.

Citations:

R75. Dimitrov, S.; Mesleh, R.; Haas, H.; Cappitelli, M.; Olbert, M.; Bassow, E.; , "On the SIR of a cellular infrared optical wireless system for an aircraft,"

Selected Areas in Communications, IEEE Journal on , vol.27, no.9, pp.1623-1638, December 2009

J23. Ntogari, G.; Kamalakis, T.; Sphicopoulos, T., "Performance analysis of space time block coding

techniques for indoor optical wireless systems," Selected Areas in Communications, IEEE Journal on ,

vol.27, no.9, pp.1545-1552, December 2009.

Indoor optical wireless systems provide an attractive alternative for realizing next generation wireless local area networks

(WLANs). In this paper, the performance of diffuse optical wireless systems, employing space time block coding (STBC)

techniques, is numerically investigated, accurately taking into account, the indoor channel impulse response and the

characteristics of ambient light and thermal noises at the receiver. Discrete multitone modulation (DMT) is used to mitigate the

effect of intersymbol interference due to the channel's impulse response. The performance of STBC systems, employing two

transmit elements, is compared against single input/ single output (SISO) and maximum ratio combining (MRC) systems

operating with the same total optical transmitter power. It is shown that STBC techniques can be used to increase the capacity of

diffuse optical wireless systems, improve their coverage and decrease the required optical power at the transmitter. These results

demonstrate the usefulness of multiple input multiple output (MIMO) techniques in the realization of optical WLANs.

Citations:

R76. Biagi, M., Vegni, A.M., Pergoloni, S., Butala, P.M., Little, T.D.C., Trace-Orthogonal PPM-Space time block coding under rate constraints for visible light

communication, (2015) Journal of Lightwave Technology, 33 (2), art. no. 7000619, pp. 481-494. Cited 1 time.

R77. Lee, K., Li, C., Yi, Y., Lee, K., Performance analysis of visible light communication using the STBC-OFDM technique for intelligent transportation

systems, (2014) International Journal of Electronics, 101 (8), pp. 1117-1133.

R78. Wang, Y., Yang, C., Wang, Y., Chi, N., Gigabit polarization division multiplexing in visible light communication, (2014) Optics Letters, 39 (7), pp. 1823-

1826.


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R79. Nistazakis, H.E., Stassinakis, A.N., Tombras, G.S., Muhammad, S.S., Tsigopoulos, A.D., K modeled turbulence and nonlinear clipping for QAM OFDM

with FSO and fiber serially linked, (2014) 2014 20th International Conference on Microwaves, Radar and Wireless Communications, MIKON 2014, art.

no. 6900015, .

R80. Nistazakis, H.E., Stassinakis, A.N., Sheikh Muhammad, S., Tombras, G.S., BER estimation for multi-hop RoFSO QAM or PSK OFDM communication

systems over gamma gamma or exponentially modeled turbulence channels, (2014) Optics and Laser Technology, 64, pp. 106-112. Cited 2 times.

R81. Sohail, M., Saengudomlert, P., Sterckx, K.L., Performance analysis of dynamic range limited DCO-OFDM, ACO-OFDM and flip-OFDM transmissions

for visible light communication, (2014) IEICE Transactions on Communications, E97B (10), pp. 2192-2202.

R82. Wu, L., Zhang, Z., Liu, H., MIMO-OFDM visible light communications system with low complexity, (2013) IEEE International Conference on

Communications, art. no. 6655172, pp. 3933-3937.

R83. Farooqui, M.Z., Saengudomlert, P., Transmit power reduction through subcarrier selection for MC-CDMA-based indoor optical wireless

communications with IM/DD, (2013) Eurasip Journal on Wireless Communications and Networking, 2013 (1), art. no. 326,

R84. Biswal, S.K., Prince, S., Improvement of BER in LED based indoor communication using overlapping pulse position modulation and LDPC coding,

(2013) International Conference on Communication and Signal Processing, ICCSP 2013 - Proceedings, art. no. 6577009, pp. 34-38.

R85. Ke, X., Chen, J., Deng, L., Research progress of space-time code in wireless optical communications (I), (2013) Hongwai yu Jiguang Gongcheng/Infrared

and Laser Engineering, 42 (7), pp. 1882-1889.

R86. Han, J., Zhang, J., Zhao, Y., Gu, W., Channel capacity and space-time block coding for coherent optical MIMO multi-mode fiber links, (2013) Optik, 124

(10), pp. 922-927.

R87. Biagi, M., Vegni, A.M., Enabling high data rate VLC via MIMO-LEDs PPM, (2013) 2013 IEEE Globecom Workshops, GC Wkshps 2013, art. no. 6825132,

pp. 1058-1063.

R88. Yang, A., Li, X., Jiang, T., Enhancement of LED indoor communications using OPPM-PWM modulation and grouped bit-flipping decoding, (2012)

Optics Express, 20 (9), pp. 10170-10179.

R89. Li, C., Yi, Y., Lee, K., Lee, K., Outdoor environment LED-identification systems integrate STBC-OFDM, (2011) 2011 International Conference on ICT

Convergence, ICTC 2011, art. no. 6082573, pp. 166-171.

R90. Yi, Y., Li, P., Li, C., Azurdia, C., An effective scheme for optical Doppler shift alleviation in intelligent transportation system integrating visible light

communication, (2011) International Conference on Advanced Communication Technology, ICACT, pp. 1253-1258.

R91. Faith, J., Rajbhandari, S., The use of linear projections in the visual analysis of signals in an indoor optical wireless link, (2010) 2010 7th International

Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2010, art. no. 5580367, pp. 576-581. Cited 2 times.

R92. Rajbhandari, S., Ghassemlooy, Z., Angelova, M., A study of discrete wavelet transform based denoising to reduce the effect of artificial light

interferences for indoor optical wireless communication, (2010) 2010 7th International Symposium on Communication Systems, Networks and Digital

Signal Processing, CSNDSP 2010, art. no. 5580361, pp. 610-614.

R93. Rajbhandari, Sujan, Ghassemlooy, Zabih, “Optimizing the performance of digital pulse interval modulation with guard slots for diffuse indoor optical

wireless links”, Mosharaka international conference on communications, propagation and electronics, 2010, pp. 12-23.

J24. Neokosmidis, I.; Kamalakis, T.; Walewski, J.W.; Inan, B.; Sphicopoulos, T., "Impact of Nonlinear

LED Transfer Function on Discrete Multitone Modulation: Analytical Approach," ΙΕΕΕ Lightwave

Technology, Journal of , vol.27, no.22, pp.4970-4978, Nov.15, (2009)

Light-emitting diodes constitute a low-cost choice for optical transmitters in medium-bit-rate optical links. An example for the

latter is local-area networks. However, one of the disadvantageous properties of light-emitting diodes is their nonlinear

characteristic, which may limit the data transmission performance of the system, especially in the case of multiple subcarrier

modulation, which is starting to attract attention in various applications, such as visible-light communications and data

transmission over polymer optical fibers. In this paper, the influence of the nonlinear transfer function of the light-emitting

diodes on discrete multitone modulation is studied. The transfer function describes the dependence of the emitted optical power

on the driving current. Analytical expressions for an idealized link were derived, and these equations allow the estimation of the

power of the noise-like, nonlinear crosstalk between the orthogonal subcarriers. The crosstalk components of the quadrature and

in-phase subcarrier components were found to be independent and approximately normally distributed. Using these results, the

influence of light-emitting-diode nonlinearity on the performance of the system was investigated. The main finding was that

systems using a small number of subcarriers and/or high QAM level exhibit a large signal-to-noise-ratio penalty due to the

nonlinear crosstalk. The model was applied to systems with white and resonant-cavity light-emitting diodes. It is shown that the

nonlinearity may severely limit the performance of the system, particularly in the case of resonant-cavity light-emitting diodes,

which exhibit a strong nonlinear behavior.

Citations:

R94. Stepniak, G., Maksymiuk, L., Siuzdak, J., Experimental comparison of PAM, CAP, and DMT modulations in phosphorescent white LED transmission

link, (2015) IEEE Photonics Journal, 7 (3), art. no. 7096922, .

R95. Ying, K., Yu, Z., Baxley, R.J., Qian, H., Chang, G.-K., Zhou, G.T., Nonlinear distortion mitigation in visible light communications, (2015) IEEE Wireless

Communications, 22 (2), art. no. 7096283, pp. 36-45.

R96. Deng, P., Kavehrad, M., Kashani, M.A., Nonlinear modulation characteristics of white LEDs in visible light communications, (2015) Optical Fiber

Communication Conference, OFC 2015, .

R97. Qian, H., Cai, S., Yao, S., Zhou, T., Yang, Y., Wang, X., On the benefit of DMT modulation in nonlinear VLC systems, (2015) Optics Express, 23 (3), pp.

2618-2632.

R98. Popoola, W.O., Haas, H., Demonstration of the merit and limitation of generalised space shift keying for indoor visible light communications, (2014)

Journal of Lightwave Technology, 32 (10), art. no. 6762861, pp. 1960-1965.


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R99. Bykhovsky, D., Arnon, S., An experimental comparison of different bit-and-power-allocation algorithms for DCO-OFDM, (2014) Journal of Lightwave

Technology, 32 (8), art. no. 6747988, pp. 1559-1564.

R100. Taparugssanagorn, A., Siwamogsatham, S., Pomalaza-Ráez, C., A MISO UCA beamforming dimmable LED system for indoor positioning, (2014)

Sensors (Switzerland), 14 (2), pp. 2362-2378.

R101. Barrami, F., Le Guennec, Y., Novakov, E., Busson, P., Impact of VCSEL nonlinearity on Discrete MultiTone modulation: Quasi-static approach,

(2014) 2014 21st International Conference on Telecommunications, ICT 2014, art. no. 6845091, pp. 113-118.

R102. Dong, H., Zhang, H., Lang, K., Yu, B., Yao, M., OFDM visible light communication transmitter based on LED array, (2014) Chinese Optics Letters,

12 (5), art. no. 052301.

R103. Zhang, X., Liu, P., Liu, J., Liu, S., An advanced A-law companding algorithm in VLC-OFDM, (2014) 2014 IEEE 3rd Global Conference on Consumer

Electronics, GCCE 2014, art. no. 7031221, pp. 721-722.

R104. Drost, R.J., Sadler, B.M., Constellation design for channel precompensation in multi-wavelength visible light communications, (2014) IEEE

Transactions on Communications, 62 (6), art. no. 6809190, pp. 1995-2005.

R105. Yun, K., Lee, C., Ahn, K.-I., Lee, R., Jang, J.-S., Kwon, J.K., Optimal signal amplitude of orthogonal frequency-division multiplexing systems in

dimmable visible light communications, (2014) Journal of the Optical Society of Korea, 18 (5), pp. 459-465.

R106. Peng, L., Hélard, M., Haese, S., On bit-loading for discrete multi-tone transmission over short range POF systems, (2013) Journal of Lightwave

Technology, 31 (24), art. no. 6663612, pp. 4155-4165.

R107. Tsonev, D., Sinanovic, S., Haas, H., A novel analytical framework for modeling nonlinear distortions in OFDM-based optical wireless

communication, (2013) 2013 IEEE/CIC International Conference on Communications in China, ICCC 2013, art. no. 6671105, pp. 147-152.

R108. Peng, L., Haese, S., Helard, M., Optimized discrete multitone communication over polymer optical fiber, (2013) Journal of Optical Communications

and Networking, 5 (11), art. no. 6678155, pp. 1313-1327.

R109. Hong, Y., Chen, J., Wang, Z.-X., Multi-user MIMO indoor visible light communication system based on BD precoding algorithm, (2013) Guangzi

Xuebao/Acta Photonica Sinica, 42 (11), pp. 1277-1282. Cited 1 time.

R110. Peng, L., Haese, S., Helard, M., Frequency domain LED compensation for nonlinearity mitigation in DMT systems, (2013) IEEE Photonics

Technology Letters, 25 (20), art. no. 6589991, pp. 2022-2055. Cited 3 times.

R111. Tsonev, D., Sinanovic, S., Haas, H., Complete modeling of nonlinear distortion in OFDM-based optical wireless communication, (2013) Journal of

Lightwave Technology, 31 (18), art. no. 6579696, pp. 3064-3076. Cited 18 times.

R112. Hong, Y., Chen, J., Wang, Z., Yu, C., Performance of a precoding MIMO system for decentralized multiuser indoor visible light communications,

(2013) IEEE Photonics Journal, 5 (4), art. no. 6568880, . Cited 8 times.

R113. Mesleh, R., LED clipping distortion compensation in optical wireless communication via multiple transmit LEDs, (2013) Photonic Network

Communications, 26 (1), pp. 25-31.

R114. Fath, T., Heller, C., Haas, H, Optical wireless transmitter employing discrete power level stepping, (2013) Journal of Lightwave Technology, 31 (11),

art. no. 6497446, pp. 1734-1743.

R115. Chen, J., Hong, Y., Wang, Z., Yu, C., Precoded visible light communications, (2013) ICICS 2013 - Conference Guide of the 9th International

Conference on Information, Communications and Signal Processing, art. no. 6782906, .

R116. Arnon, S., The effect of clock jitter in visible light communication applications, (2012) Journal of Lightwave Technology, 30 (21), art. no. 6316040, pp.

3434-3439.

R117. Wang, Z., Zhong, W.-D., Yu, C., Chen, J., Shin, C.P., Francois, Chen, W., Performance of dimming control scheme in visible light communication

system, (2012) Optics Express, 20 (17), pp. 18861-18868. Cited 24 times.

R118. Mesleh, R., Elgala, H., Haas, H., Performance analysis of indoor OFDM optical wireless communication systems, (2012) IEEE Wireless

Communications and Networking Conference, WCNC, art. no. 6213920, pp. 1005-1010.

R119. Wang, Z., Yu, C., Zhong, W.-D., Chen, J., Chen, W., Performance of a novel LED lamp arrangement to reduce SNR fluctuation for multi-user visible

light communication systems, (2012) Optics Express, 20 (4), pp. 4564-4573.

R120. Wang, Z., Zhong, W.-D., Yu, C., Chen, J., A novel LED arrangement to reduce SNR fluctuation for multi-user in visible light communication

systems, (2011) ICICS 2011 - 8th International Conference on Information, Communications and Signal Processing, art. no. 6174231, .

R121. Stefan, I., Elgala, H., Mesleh, R., O'Brien, D., Haas, H., Optical wireless OFDM system on FPGA: Study of LED nonlinearity effects, (2011) IEEE

Vehicular Technology Conference, art. no. 5956691, .

R122. Yang, Y., Zhang, J., Liu, B., Chen, H., Study of the impact of LED nonlinearity on orthogonal frequency division multiplex based visible light

communication systems, (2011) Zhongguo Jiguang/Chinese Journal of Lasers, 38 (8), art. no. 0805007,

R123. Mesleh, R., Elgala, H., Haas, H., On the performance of different OFDM based optical wireless communication systems, (2011) Journal of Optical

Communications and Networking, 3 (8), pp. 620-628.

R124. Wang, Z., Yu, C., Zhong, W.-D., Chen, J., Performance improvement by tilting receiver plane in M-QAM OFDM visible light communications,

(2011) Optics Express, 19 (14), pp. 13418-13427.

R125. Ryu, S.-B., Choi, J.-H., Bok, J., Lee, H., Ryu, H.-G., High power efficiency and low nonlinear distortion for wireless visible light communication,

(2011) 2011 4th IFIP International Conference on New Technologies, Mobility and Security, NTMS 2011 - Proceedings, art. no. 5720581, .

R126. Elgala, H., Mesleh, R., Haas, H., Impact of LED nonlinearities on optical wireless OFDM systems, (2010) IEEE International Symposium on Personal,

Indoor and Mobile Radio Communications, PIMRC, art. no. 5671734, pp. 634-638.

J25. Τ. Rokkas, D. Katsianis, Th. Kamalakis, D. Varoutas and Th. Sphicopoulos, “Evaluation of FSO

and FTTH tecnologies using techno-economic and risk analysis” Info, vol. 11, no 3, pp. 87-96 (2009).

Purpose: The purpose of this paper is to carry out a techno-economic evaluation of the business prospects of Free Space Optical

(FSO) technology as an alternative last mile solution. Design/methodology/approach: The analysis is based on the results from

the TONIC tool that takes into account parameters such as network topology, area characteristics, service demand, price


Page 27 / 48

evolution forecasting and calculates several economic figures-of-merits. Furthermore in order to analyze market and technologies

uncertainties a thorough risk analysis has been performed. Findings: The results reveal that FSO technology could provide a

viable alternative in cases where the existing duct availability is limited especially compared to the Fiber-to-the-Home (FFTH)

solutions. Originality/value:This paper studies two alternative last mile broadband technologies FSO and FTTH

J26. Neokosmidis, I.; Kamalakis, T.; Sphicopoulos, T., "Multicanonical Monte Carlo Modeling of

Wavelength Division Multiplexed Differential Phase Shift Keying Systems," ΙΕΕΕ Lightwave

Technology, Journal of , vol.27, no.22, pp.5065-5072, Nov.15, 2009

Differential phase shift keying (DPSK) modulation is being considered as a possible candidate for future optical wavelength

division multiplexed (WDM) transmission systems. In a single channel link, the balanced interferometric DPSK receiver

exhibits increased tolerance against amplified spontaneous emitting (ASE) noise and fiber nonlinear effects. In this paper, a

model is presented that can be used to estimate the performance of a multichannel DPSK system taking into account the

influence of interchannel phenomena, namely cross-phase modulation (XPM) and four wave mixing (FWM), in the phase noise

statistics. The model is based on an approximate solution of the fiber propagation equation and the multicanonical Monte Carlo

(MCMC) method. It provides an efficient tool that can be used to investigate the influence of many link design parameters such

as channel spacing, launch power, and fiber dispersion. The model is illustrated in the comparison of the performance of

multichannel DPSK to on-off keying (OOK) systems. It is verified that, even in the presence of interchannel effects, DPSK

modulation greatly enhances the system performance compared to OOK.

R127. Yakut, S., Vural, C. “Blind turbo equalization with EM algorithm for DPSK systems”, (2010) SoftCOM 2010 - International Conference on Software,

Telecommunications and Computer Networks, art. no. 5623657, pp. 245-249.

J27. Avaritsiotis, N.; Kamalakis, T.; Sphicopoulos, T., "A Semi-Analytical Model for Numerical Study

of a Photonic Crystal Coupled Resonator Optical Waveguide With Disorder," ΙΕΕΕ Lightwave

Technology, Journal of , vol.27, no.14, pp.2892-2899, July15, (2009)

This paper addresses the relation between fabrication imperfections and the performance of a photonic crystal Coupled Resonator

Optical Waveguide (CROW). A semi-analytical model is presented, which calculates the perturbation of the coupling coefficients

through their derivatives with respect to geometric characteristics of the rods of the photonic crystal lattice. Once these

derivatives are calculated, it becomes possible to estimate the transfer functions of a large number of randomly perturbed devices

at a small additional computational cost. This enables the statistical study of many performance issues of CROWs, such as the

amplitude and position of the device's resonances. The model can be used to study the influence of imperfections of different

strengths and types on CROWs of various lengths.

J28. N. Avaritsiotis, T. Kamalakis, T. Sphicopoulos, “An Analytical Model for the Calculation of the

Transfer Function of a Photonic Crystal Coupled Resonator Optical Waveguide” IEEE Journal of


Coupled resonator optical waveguide (CROW) may play an important role in future integrated optical devices. In this paper, a

closed form formula for the calculation of the transfer function of a photonic crystal (PC) CROW coupled to an input and an

output PC waveguide is derived. Coupled mode theory (CMT) is initially used for the derivation of a semi-analytical transfer

function model. This model requires the computation of the inverse of a matrix containing the coupling coefficients of the device.

The model is compared to the results obtained by the finite-difference time domain (FDTD) and good agreement is obtained.

Using the tight-binding approximation, the semi-analytical model is used to derive an analytical solution for the transfer

function of the structure directly from the coupling coefficients of the device. Based on this analytical model, the resonant

frequencies of the structure are determined.

J29. A. Theocharidis, T. Kamalakis, T. Sphicopoulos, “Linear and Non-Linear Optical Pulse

Propagation in Photonic Crystal Waveguides near the Band Edge”, (2008) IEEE Journal of Quantum

Electronics, 44 (11), pp. 1020-1027

In this paper, the propagation of optical pulses in photonic crystal waveguides (PCWs) near the edge of the guided band is

numerically investigated. In the linear regime, it is shown that group velocity dispersion can significantly limit the maximum bit

rate of the optical signal. On the other hand, better performance is obtained using soliton waves. Both bright and dark solitons

can significantly increase the maximum bit rate that can be achieved in the nanosecond delay regime. The influence of higher

order dispersion and optical loss is numerically investigated. The results indicate that near the band edge soliton propagation in

PCWs can be stable, provided that the optical losses are kept low. This could open a path towards implementing compact

nonlinear elements and delay lines in integrated form.

Citations:

R128. Liu, L., Yang, D., Tian, H., Ji, Y. “Soliton propagation optimization and dynamic modulation in photonic crystal waveguide with polystyrene

background” (2012) Optics Communications, 285 (2), pp. 171-177.


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R129. Liu, L.-Y., Tian, H.-P., Ji, Y.-F. ,”Soliton pulse propagation and optical delay properties in photonic crystal waveguide”, (2011) Wuli Xuebao/Acta

Physica Sinica, 60 (10), art. no. 104216, .

R130. Long, F., Tian, H., Ji, Y., “Buffering capability and limitations in low dispersion photonic crystal waveguides with elliptical airholes” (2010) Applied

Optics, 49 (25), pp. 4808-4813. Cited 1 time.

R131. Zhang, X., Tian, H., Ji, Y., “Group index and dispersion properties of photonic crystal waveguides with circular and square air-holes” (2010) Optics

Communications, 283 (9), pp. 1768-1772. Cited 5 times.

R132. Panoiu, N.C., McMillan, J.F., Wong, C.W., “Theoretical analysis of pulse dynamics in silicon photonic crystal wire waveguides” (2010) IEEE Journal

on Selected Topics in Quantum Electronics, 16 (1), art. no. 5382579, pp. 257-266

R133. Zhang, X., Tian, H., Ji, Y. Group index and dispersion properties of photonic crystal waveguides with circular and square air-holes (2010) Optics


J30. T. Kamalakis, D. Varoutas and T. Sphicopoulos, “On the Application of Demand and Price

Evolution Forecasting in Road-Mapping the Optoelectronic Component Industry”, The Mediterranean

Journal of Electronics and Communications, Volume 3, No. 4, October 2007.

The optoelectronic component industry is a highly innovative industry with a large value chain. In order to ensure the growth of

the industry, much efforts must be devoted to road mapping activities. In such activities demand and price evolution forecasting

tools can prove quite useful in order to help in the roadmap refinement and update process. This paper attempts to provide useful

guidelines in roadmapping of optical components and considers two models based on diffusion theory and the extended learning

curve for demand and price evolution forecasting.

J31. A. Theocharidis, T. Kamalakis, T. Sphicopoulos, “Accuracy of Coupled-Mode Theory and Mode-

Matching Method in the Analysis of Photonic Crystal Waveguide Perturbations”, IEEE Journal of

Lightwave Technology, 25 (10), pp.3193-3201 (2007)

In this paper, the accuracy of coupled-mode theory (CMT) and mode-matching (MM) method in estimating the scattering due to

geometric perturbations in photonic crystal waveguides (PCWs) is examined. Two CMT formulations are considered: the

instantaneous virtual grating and the conventional CMT. The two CMT formulations and the MM method are compared

against the finite-difference frequency-domain (FDFD) method combined with the adjoint variable (AV) method. The results

obtained with the AV/FDFD and MM methods agree very well, proving the validity of the latter for the sensitivity analysis of

PCW structures. It is also deduced that although both CMT formulations lead to almost identical results, they can provide only a

first approximation to the perturbation-induced scattering.

Citations:

R134. Jamid, H.A., Khan, M.Z.M. “A numerical approach for full-vectorial analysis of 3-D guided wave structures with multiple and strong longitudinal

discontinuities”, (2009) IEEE Journal of Quantum Electronics, 45 (2), pp. 117-124. Zafar, J., Gibson, A.A.P., Haigh, A., Khairuddin, I., Abuelma'Atti, A.,

Zafar, H.

R135. Zafar, J., Gibson, A.A.P., Haigh, A., Khairuddin, I., Abuelma'Atti, A., Zafar, H. “E-plane and H-plane slab loaded waveguide solutions”, (2009)

International Journal of Electronics, 96 (1), pp. 79-92.

J32. T. Rokkas, T. Kamalakis, D. Katsianis, D. Varoutas and T. Sphicopoulos, “Business Prospects of

Wide-Scale Deployment of Free Space Optical Technology as a Last-Mile Solution: A Techno-

Economic Evaluation”, OSA Journal of Optical Networking 6 (7), pp. 860-870 (2007).

A technoeconomic evaluation of the business prospects of a wide-scale deployment of free space optical (FSO) technology as a

last-mile solution is carried out. The evaluation is based on a technoeconomic tool that taking into account network topology,

area characteristics, service demand, and price evolution forecasts, estimates key economic figures-of-merit. It is shown that FSO

technology could provide a viable alternative in situations where the duct availability is limited, and fiber-to-the-home/office or

fiber-to-the-cabinet scenarios have negative or less favorable business prospects. Hybrid fiber/FSO scenarios are also investigated

taking into account different FSO coverage conditions.

Citations:

R136. Liao, J., Zeng, J., Deng, S., Boryssenko, A.O., Joyner, V.M., Huang, Z.R. “Packaging of dual-mode wireless communication module using

RF/Optoelectronic devices with shared functional components”, (2010) IEEE Transactions on Advanced Packaging, 33 (2), art. no. 5411940, pp. 323-

332

R137. Fokas, M., Katsianis, D., Varoutas, D., Rokkas, T., Javaudin, J.-P., Bellec, M., Goni, G., Fuentetaja, R.G. “Initial techno-economic results for OMEGA

home Gigabit networks” (2010) IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, art. no. 5671824, pp.

2793-2798.

R138. Rokkas, T., Katsianis, D., Varoutas, D. “Techno-economic evaluation of FTTC/VDSL and FTTH roll-out scenarios: Discounted cash flows and real

option valuation” (2010) Journal of Optical Communications and Networking, 2 (9), art. no. 5560791, pp. 760-772.

R139. Jun Liao; Mirvakili, A.; Boryssenko, A.O.; Joyner, V.M.; Huang, Z.R.; , "Packaging of PIN Photodiode on Patch Antenna for a Dual-Mode Indoor

RF/FSO Receiver," Components, Packaging and Manufacturing Technology, IEEE Transactions on , vol.1, no.3, pp.335-343, March 2011

R140. Jun Liao; Pengfei Wu; Mirvakili, A.; Joyner, V.; Huang, Z.R.; , "Packaging of Ka-band patch antenna and optoelectronic components for dual-mode

indoor wireless communication," Electronic Components and Technology Conference (ECTC), 2011 IEEE 61st , vol., no., pp.1338-1343, May 31 2011-

June 3 2011


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J33. T. Kamalakis and T. Sphicopoulos, “A New Formulation of Coupled Propagation Equations in

Periodic Nanophotonic Waveguides for the Treatment of Kerr-induced Nonlinearities”, IEEE Journal

of Quantum Electronics 43 (10) pp. 3193-3201 (2007).

Nonlinear phenomena could be used to implement important signal processing functionalities in future nanophotonic integrated

optical devices. In this paper, a semi-analytical model incorporating the influence of Kerr-induced nonlinearity in the

propagation of an optical signal inside a periodic nanophotonic waveguide is derived. The approach consists of a system of

nonlinear coupled mode propagation equations and is applicable to both single and multimode waveguides. The influence of the

mode group velocity on the value of the self-phase modulation coefficient gamma is analyzed and the impact of higher order

nonlinear terms is also investigated both at the middle and edge of the guided band. The model is also applied to estimate the

nonlinear coupling coefficients of a photonic crystal waveguide coupler and provides an efficient method to analyze the influence

of nonlinear phenomena in periodic nanophotonic waveguide devices.

Citations:

R141. Zhang, X., Tian, H., Ji, Y. Group index and dispersion properties of photonic crystal waveguides with circular and square air-holes (2010) Optics


R142. Panoiu, N.C., McMillan, J.F., Wong, C.W.Theoretical analysis of pulse dynamics in silicon photonic crystal wire waveguides (2010) IEEE Journal on

Selected Topics in Quantum Electronics, 16 (1), art. no. 5382579, pp. 257-266.

R143. Santagiustina, M., Someda, C.G., Vadalà, G., De Rossi, A. “Slow light enhancement of nonlinear effects in photonic crystal waveguides” (2010)

European Conference on Optical Communication, ECOC, 1-2, art. no. 5621511, .

R144. Santagiustina, M., Someda, C.G., Vadalà, G., Combrié, S., De Rossi, A. “Theory of slow light enhanced four-wave mixing in photonic crystal

waveguides” (2010) Optics Express, 18 (20), pp. 21024-21029.

J34. I. Neokosmidis, T. Kamalakis and T. Sphicopoulos, “Optical Delay Lines based on Soliton

Propagation in Photonic Crystal Coupled Resonator Optical Waveguides”, IEEE Journal of

Quantum Electronics 43(7) pp. 560-567 (2007).

In this paper, a study of optical delay lines based on soliton propagation in coupled resonator optical waveguides is performed.

For a given bit rate and required delay, design equations are given that relate the soliton peak power and collision period to the

soliton width. To study the influence of higher order linear and nonlinear dispersion, a continuous wave propagation model

incorporating these effects is also derived. Using this model, the soliton stability in the presence of higher order dispersion,

optical loss and adjacent soliton pulses is numerically verified. It is also shown that soliton-based delay lines can achieve

nanosecond delay at a propagation length of a few millimeters due to the high slow down factors that can be obtained.

Citations:

R145. Lin, X.-S., Yan, J.-H. “Coupling constant of microcavity waveguides based on coupled mode theory” (2009) Optics Communications, 282 (15), pp.

3081-3084.

R146. Zhang, Y., Tian, H., Wang, H., Ouyang, Q., Wang, N., Yuan, P. “Continuous adjustment of group delay by tuning the argument of coupling

coefficient in microring coupled-resonator optical waveguides” (2008) Applied Physics B: Lasers and Optics, 93 (2-3), pp. 469-472.

R147. Lederer, F., Stegeman, G.I., Christodoulides, D.N., Assanto, G., Segev, M., Silberberg, Y. “Discrete solitons in optics”,(2008) Physics Reports, 463 (1-

3), pp. 1-126.

J35. A. Theocharidis, T. Kamalakis and T. Sphicopoulos “Analysis of Photonic Crystal Waveguide

Discontinuities Using the Mode Matching Method and Application to Device Performance

Evaluation”, OSA Journal of Optical Society of America B, 24(8), pp.1698-1706 (2007).

The application of the mode-matching (MM) method in the case of photonic crystal waveguide discontinuities is presented. The

structure under consideration is divided into a number of cells, and the modes of each cell are calculated by an alternative

formulation of the plane-wave expansion (PWE) method. This formulation allows the calculation of both guided and evanescent

modes at a given frequency. A matrix equation is then formed relating the modal amplitudes at the beginning and the end of the

structure. The accuracy of the MM method is compared to the finite-difference frequency-domain (FDFD) method and the finite-

difference time-domain (FDTD) method, and good agreement is observed. The MM method requires far fewer resources than the

FDFD and the FDTD methods while providing a useful physical insight to the calculation of the frequency response of

waveguide discontinuities. The method is also applied to the calculation of power loss due to structural fabrication-induced

variations.

J36.T. Kamalakis, T. Sphicopoulos, S.Sheikh Muhammad and E. Leitgeb, “Estimation of Power

Scintillation Probability Density Function in Free Space Optical Links Using Multi-Canonical Monte

Carlo Sampling”, OSA Optics Letters 31 (21), pp. 3077-3079 (2006)

Free-space optics (FSO) can provide cost-effective, high-bandwidth, wireless connections. However, atmospheric turbulence may

degrade the performance of FSO links by causing intensity and power scintillations at the receiver. Multicanonical Monte Carlo

sampling is used in conjunction with the phase screen method to calculate the statistics, and particularly the probability density

function (PDF), of the power fluctuations at an FSO receiver. This allows the efficient calculation of the PDF even for very small


Page 30 / 48

values with a limited number of iterations. The obtained PDF can be used to characterize the performance of the system in terms

of the error probability.

Citations

R148. Zhang, Y., Si, C., Wang, Y., Wang, J., Jia, J. “Capacity for non-Kolmogorov turbulent optical links with beam wander and pointing errors” (2011)

Optics and Laser Technology, 43 (7), pp. 1338-1342.

R149. Muhammad, S.S. “A unified approach for channel modeling of terrestrial FSO links” (2010) 2010 7th International Symposium on Communication

Systems, Networks and Digital Signal Processing, CSNDSP 2010, art. no. 5580362, pp. 522-527.

R150. Gappmair, W., Hranilovic, S., Leitgeb, E. “Performance of PPM on terrestrial FSO links with turbulence and pointing errors”, (2010) IEEE

Communications Letters, 14 (5), art. no. 5456068, pp. 468-470.

R151. Mahdieh, M.H., Pournoury, M., “Atmospheric turbulence and numerical evaluation of bit error rate (BER) in free-space communication” (2010)

Optics and Laser Technology, 42 (1), pp. 55-60.

R152. Ma, X., Liu, L., Zhang, X., Tang, J. “Aperture-array acquisition scheme for optical links in atmospheric turbulence” (2010) Applied Optics, 49 (4), pp.

718-723.

R153. Peppas, K.P., Datsikas, C.K., “Average symbol error probability of general-order rectangular quadrature amplitude modulation of optical wireless

communication systems over atmospheric turbulence channels”, (2010) Journal of Optical Communications and Networking, 2 (1-3), art. no. 5405528,

pp. 102-110.

R154. Popoola, W.O., Ghassemlooy, Z., “BPSK subcarrier intensity modulated free-space optical communications in atmospheric turbulence”, (2009)

Journal of Lightwave Technology, 27 (8), pp. 967-973.

R155. Nistazakis, H.E., Karagianni, E.A., Tsigopoulos, A.D., Fafalios, M.E., Tombras, G.S., “Average capacity of optical wireless communication systems

over atmospheric turbulence channels”, (2009) Journal of Lightwave Technology, 27 (8), pp. 974-979.

R156. Ghassemlooy, Z., Popoola, W.O., Leitgeb, E., “Free-space optical communication using subcarrier modulation in gamma-gamma atmospheric

turbulence”, (2007) Proceedings of 2007 9th International Conference on Transparent Optical Networks, ICTON 2007, 3, art. no. 4296269, pp. 156-160.

R157. Ghassemlooy, Z. Popoola, W.O. Leitgeb, E, “Free-Space Optical Communication Using Subearrier Modulation in Gamma-Gamma Atmospheric

Turbulence”, Transparent Optical Networks, 2007. ICTON '07. 9th International Conference (2007).

R158. M.H. Mahdieh, “Numerical approach to laser beam propagation through turbulent atmosphere and evaluation of beam quality factor”, Optics

Communications, Volume 281, Issue 13, 1 July 2008, Pages 3395-3402.

J37. T. Kamalakis and T. Sphicopoulos, “Frequency Dependence of the Coupling Coefficients and

Resonant Frequency Detuning in a Nanophotonic Waveguide-Cavity System”, IEEE Journal Of

Quantum Electonics, 42(8), pp. 827-837 (2006).

Waveguide-cavity interactions may find important applications in future nanophotonic devices. This paper provides a detailed

derivation of the evolution equation of the amplitude of a cavity mode coupled to a waveguide, starting from Maxwell's equations

and using the reciprocity relations. The analysis applies to both constant cross-section and periodic waveguides as well. Unlike

previous studies, the analysis enables the estimation of the frequency dependence of the coupling coefficients. It is also confirmed

that the waveguide-cavity coupling causes a detuning of the resonant frequency of the cavity mode. The detuning is estimated in

the case of a photonic crystal waveguide-cavity system and it is shown that it can be significant especially if the structure is

intended for filtering applications. The analysis is generalized to the case of a multimode or multiple cavities and provides a

useful tool in the analysis of devices based on coupled cavities

Citations:

R159. “Low-temperature tapered-fiber probing of diamond nitrogen-vacancy ensembles coupled to GaP microcavities”, K-M C Fu et al 2011 New J. Phys.

13 055023

R160. Βaker, C., Belacel, C., Andronico, A., Senellart, P., Lemaitre, A., Galopin, E., Ducci, S., Leo, G., Favero, I., “Critical optical coupling between a GaAs

disk and a nanowaveguide suspended on the chip” (2011) Applied Physics Letters, 99 (15), art. no. 151117

J38.I. Neokosmidis, T. Kamalakis and Thomas Sphicopoulos, “Accurate Estimation of the

Impact of IP Traffic Burstiness on the Performance of Wavelength Division Multiplexing

Networks”, OSA Optics Express, 13 (24), pp. 9702-9707 (2005)

Four-wave mixing and in-band crosstalk noise can limit the performance of wavelength division multiplexing optical networks.

The statistics of these noises depend on the nature of the traffic. In this paper, the performance of an IP over MPλS-based

network is analyzed using the Multi-Canonical Monte Carlo (MCMC) method and it is shown that the Gaussian approximation

does not yield accurate results. The importance of the traffic load and the traffic distribution in the optical channels is also

investigated. It is shown that a proper traffic distribution in the optical channels, can improve the performance of the network.

J39. I. Neokosmidis, T. Kamalakis and T. Sphicopoulos, “Non-linearity Tolerance of Optical

Modulation Formats in Non-Zero Dispersion Fibers”, IEEE Photonics Technology Let., 17 (12), pp.

2760 - 2762 (2005).

This letter addresses the issue of the choice of optical modulation format in a multipan wavelength-division-multiplexing system

using G.655 fiber. Various modulation formats are assessed by numerical simulation in the presence of fiber nonlinearities with


Page 31 / 48

four-wave mixing being the dominant effect. It is shown that the various amplitude modulation alternatives result in more or

less the same performance. Phase modulation schemes such as differential phase-shift keying drastically increase the system

performance leading to an increase of the Q-factor by almost 3 dB.

Citations:

R161. Malhotra, J.S., Kumar, M. “Performance analysis of NRZ, RZ, CRZ and CSRZ data formats in 10 Gb/s optical soliton transmission link under the

impact of chirp and TOD” (2010) Optik, 121 (9), pp. 800-807.

R162. Ito, Y., Tamo, T., Numai, T. “Reduction of four-wave mixing noises in FDM optical fiber transmission systems with quaternary bit-phase arranged

return-to-zero” (2009) Optics Communications, 282 (19), pp. 3989-3994.

J40. T. Kamalakis and T. Sphicopoulos, “Analytical Expressions for the Resonant Frequencies and

Modal Fields of Finite Coupled Optical Cavity Chains”, IEEE Journal of Quantum Electronics, 41

(11), pp. 1419 – 1425 (2005).

Coupled optical cavities are constantly attracting increased attention in telecommunication applications. For an infinite chain of

optical cavities, also known as the coupled resonator optical waveguide (CROW), the tight binding approximation has been used

in order to evaluate its dispersion characteristics and the modal fields. In this paper, the tight binding formalism is applied in a

finite chain of optical cavities of arbitrary length. This allows the derivation of simple analytical formulas for the resonant

frequencies and the corresponding modal fields. The analytical results are compared with the numerical results of the plane wave

expansion method in the case of a finite two-dimensional photonic crystal chain of coupled resonators and an excellent agreement

is observed.

Citations

R163. Huang, C.-H., Wu, J.-N., Cheng, S.-C., Hsieh, W.-F. “The evolution of solitons in coupled resonator optical waveguides and photonic-crystal

waveguides” (2011) Computer Physics Communications, 182 (1), pp. 232-236.

R164. Tu, X., Mario, L.Y., Mei, T. “Coupled Fano resonators” (2010) Optics Express, 18 (18), pp. 18820-18831.

R165. Khromova, I., Gonzalo, R., Ederra, I., De Maagt, P. “Resonance frequencies of cavities in three-dimensional electromagnetic band gap structures”,

(2009) Journal of Applied Physics, 106 (1), art. no. 014901,

R166. Thomas, Y.L., Chin, M.K. “The effects of periodic and quasi-periodic orders on the photonic bandgap structures of microring coupled-resonator

optical waveguides”, (2009) Optics Express, 17 (7), pp. 5176-5192.

R167. Huang, C.-H., Lai, Y.-H., Cheng, S.C., Hsieh, W.-F., “Modulation instability in nonlinear coupled resonator optical waveguides and photonic crystal

waveguides”, (2009) Optics Express, 17 (3), pp. 1299-1307.

R168. Huang, C.-H., Hsieh, W.-F., Cheng, S.-C.. “Tuning the decoupling point of a photonic-crystal directional coupler”, (2009) Journal of the Optical

Society of America B: Optical Physics, 26 (2), pp. 203-209.

R169. Maksimović, M., Hammer, M., Van Groesen, E.W.C., “Coupled optical defect microcavities in one-dimensional photonic crystals and quasi-normal

modes”, (2008)

R170. Fussell, D.P., Hughes, S., Dignam, M.M., “Influence of fabrication disorder on the optical properties of coupled-cavity photonic crystal

waveguides”, (2008) Physical Review B - Condensed Matter and Materials Physics, 78 (14), art. no. 144201.

R171. Maksimovic, M., Hammer, M., Van Groesen, E., “Coupled optical defect microcavities in 1D photonic crystals and quasi-normal modes”, (2008)

Proceedings of SPIE - The International Society for Optical Engineering, 6896, art. no. 689603, .

R172. B. M. Möller, U. Woggon, and M. V. Artemyev, "Band Formation in Coupled-Resonator Slow-Wave Structures," Opt. Express 15, 17362-17370 (2007)

R173. D. P. Fussell and M. M. Dignam, “Quantum-dot photon dynamics in a coupled-cavity waveguide: Observing band-edge quantum optics”, Phys.

Rev. A 76, 053801 (2007).

R174. D. P. Fussell and M. M. Dignam, "Spontaneous emission in coupled microcavity-waveguide structures at the band edge," Opt. Lett. 32, 1527-1529

(2007).

R175. Bjorn M. Moller and Ulrike Woggon, “Bloch modes and disorder phenomena in coupled resonator chains”, Phys. Rev. B 75, 245327 (2007)

R176. Fussell, D.P., Hughes, S., Dignam, M.M. “Influence of fabrication disorder on the optical properties of coupled-cavity photonic crystal waveguides”

(2008) Physical Review B - Condensed Matter and Materials Physics, 78 (14), art. no. 144201.

R177. Fussell, D.P., Dignam, M.M. “Spontaneous emission in coupled microcavity-waveguide structures at the band edge”, (2007) Optics Letters, 32 (11),

pp. 1527-1529.

J41. T. Kamalakis and T. Sphicopoulos “Performance Analysis of Differential Phase Shift Keying

Optical Receivers in the Presence of In-band Crosstalk Noise” IEEE Journal of Lightwave Technology,

23 (12) , pp. 4084 - 4092 (2005)

In-band crosstalk can pose important limitations in an all-optical wavelength-division-multiplexed (WDM) network. Recent

studies have demonstrated that differential phase shift keying (DPSK), can tolerate higher in-band crosstalk-noise levels

compared to amplitude shift keying (ASK). In this paper, the performance of a DPSK receiver, limited by in-band crosstalk noise,

is studied theoretically. The model takes into account both the in-band crosstalk noise as well as the amplified-spontaneous-

emission (ASE) noise of the optical amplifiers. The model is based on the evaluation of the moment-generating function (MGF) of

the decision variable through which, the error probability (EP) can be calculated by applying the saddle point approximation.

This provides a rigorous model for the evaluation of the EP of a DPSK receiver in the presence of ASE and in-band crosstalk


Page 32 / 48

noises. In the absence of the ASE noise, a closed-form formula for the EP is also given that is useful for estimating the error floor

set by the in-band crosstalk noise.

Citations

R178. Cancela, L.G.C. Pires, J.J.O. “On the Accuracy of the Gaussian Approximation for Performance Estimation in Optical DPSK Systems with In-Band

Crosstalk”, IEEE International Conference on Communications, 2007. ICC '07 (2007).

R179. Pires, J.J.O., Cancela, L.G.C. “Estimating the performance of direct-detection DPSK in optical networking environments using eigenfunction

expansion techniques” (2010) Journal of Lightwave Technology, 28 (13), art. no. 5473090, pp. 1994-2003.

R180. M. Devaraju, V.C. Ravichandran, “Experimental Analysis of Receiver Performance of Optical CDMA System Using DPSK and OOK Modulation

Through Balanced Detection and Optical Thresholding Techniques”, Vol. 9 No. 10 pp. 85-92, International Journal of Computer Science and

Network Security

R181. Pires, J.J.O., Cancela, L.G.C. “Theoretical insights into the impact of coherent and incoherent crosstalk on optical DPSK signals” (2010) Journal of

Lightwave Technology, 28 (19), pp. 2766-2774.

R182. Ho, K.-P. “Effects of homodyne crosstalk on dual-polarization QPSK signals” (2011) Journal of Lightwave Technology, 29 (1), art. no. 5648318, pp.

124-131.

J42. T. Kamalakis and T. Sphicopoulos, “Numerical study of the implications of size nonuniformities

in the performance of photonic crystal couplers using coupled mode theory”, IEEE Journal of Quantum

Electronics, 41 (6) , pp. 863 - 871 (2005).

Photonic crystals (PCs) are a promising technology for the realization of high-density optical integrated circuits. PC-based

couplers have been proposed as a compact means of achieving wavelength multiplexing and demultiplexing. However, the

performance of such devices can be limited by fabrication imperfections such as rod size nonuniformities. In this paper, coupled

mode theory (CMT) is applied in order to study the implication of the variation of the size of the rods. CMT can provide a useful

insight in the effect of size variations, and unlike other numerical methods such as the finite difference time domain, it does not

require excessive computational time. Using CMT, the relation between the size nonuniformities and the coupler's insertion loss

and extinction ratio is analyzed. It is shown that even a small size variation of the order of 2%-3% can degrade the performance

of the device.

Citations

R183. Boucher, Y.G. “Fundamentals of couplonics”, Proceedings of SPIE - The International Society for Optical Engineering 6182 (2006).

R184. A. Locatelli, M. Conforti, D. Modotto, C. De Angelis, “Discrete negative refraction in photonic crystal waveguide arrays”, Optics Letters 31 pp. 1343

(2006).

R185. Zhong Z. Zhang, Yang H. Jiang Y. “New design of 2-D photonic crystal waveguide couplers”, Opto-Electronics Letters, 2006 Vol.2 No.5 P.334-335

R186. D. Modotto, M. Conforti, A. Locatelli, and C. De Angelis, " Imaging Properties of Multimode Photonic Crystal Waveguides and Waveguide Arrays,"

J. Lightwave Technol. 25, 402-409 (2007).

R187. L. Martinelli, H. Benisty, O. Khayam, G. Duan, H. Heidrich, and K. Janiak, " Analysis and Optimization of Compact Demultiplexer Monitor Based

on Photonic-Crystal Waveguide," J. Lightwave Technol. 25, 2385-2394 (2007)

R188. Chunying Guan, “Characteristic of a photonic crystal polarization coupler”, J. Phys. D: Appl. Phys. 40 3065-3069 (2007).

R189. Xiaoyu Mao; Yidong Huang; Wei zhang; Jiangde Peng, "Degraded Performance of Photonic Crystal Couplers due to Fabrication Imperfections,"

Nano-Optoelectronics Workshop, 2007. i-NOW '07. International , vol., no., pp.116-117, July 29 2007-Aug. 11 2007

R190. Chunying, G., Libo, Y. “Effect of scatterers shape between coupling channels on the photonic crystal coupler”, (2008) Proceedings of SPIE - The

International Society for Optical Engineering, 6831, art. no. 683110

R191. Guan, C., Yuan, L. Effect of scatterer shape variations between different channels on coupling characteristics of photonic crystal couplers (2009)

Journal of Optics A: Pure and Applied Optics, 11 (10), art. no. 105105.

R192. Mao, X., Huang, Y., Cui, K., Zhang, C., Zhang, W., Peng, J. Effects of structure parameters and structural deviations on the characteristics of

photonic crystal directional couplers (2009) Journal of Lightwave Technology, 27 (18), pp. 4049-4054.

R193. Stay, J.L., Gaylord, T.K., “Conditions for primitive-lattice-vector-direction equal contrasts in four-beam-interference lithography”, (2009) Applied

Optics, 48 (24), pp. 4801-4813.

R194. Rahmati, A.T., Granpayeh, N. “Kerr nonlinear switch based on ultra-compact photonic crystal directional coupler” (2011) Optik, 122 (6), pp. 502-

505.

R195. N. Nozhat, R.C. McPhedran, C.M. de Sterke, N. Granpayeh, “The plasmonic folded directional coupler, Photonics and Nanostructures -

Fundamentals and Applications”, In Press, Corrected Proof, Available online 29 March 2011

J43. I. Neokosmidis, T. Kamalakis, A. Chipouras, and T. Sphicopoulos “New Techniques for the

Suppression of the Four Wave Mixing-Induced Distortion in Non-Zero Dispersion Fiber WDM

Systems”, IEEE Lightwave Technology, 23 (3), pp. 1137 - 1144 (2005).

The performance of a wavelength-division multiplexing (WDM) optical network can be severely degraded due to fiber nonlinear

effects. In the case where nonzero dispersion (NZD) fibers are employed, the four-wave mixing (FWM) effect sets an upper limit


Page 33 / 48

on the input power, especially in the case of narrow channel spacing. In order to reduce FWM-induced distortion two new

techniques,the hybrid amplitude-/frequency-shift keying (ASK/FSK) modulation and the use of prechirped pulses are

investigated. It is shown that both techniques can greatly improve the Q-factor in a 10 Gb/s WDM system. This happens even

for very high input powers (~ 10 dBm), where the degradation of the conventional WDM system is prohibitively high. The

proposed methods are also applied and tested in higher bit rates (40 Gb/s). It is deduced that although the hybrid ASK/FSK

modulation technique marginally improves the system performance, the optical prechirp technique can still be used to greatly

increase the maximum allowable input power of the system.

R196. S. Kojima, , T. Numai, “Theoretical analysis of modified repeated unequally spaced frequency allocations in FDM lightwave transmission systems”,

IEEE Journal of Lightwave Technology 24 (7), p. 2786 (2006).

R197. A.K. Sharma, A. Singh, “Suppression of FWM in WDM optical communication systems using channel polarization and its comparative study using

fuzzy model”, Proceedings of SPIE - The International Society for Optical Engineering 6343 (2006).

R198. Liu, S. “Four-wave mixing and modulation instability of continuous optical waves in single-mode optical fibers”, Applied Physics Letters 89 (17),

art. no. 171118 (2005).

R199. R. Deepa, R. Vijaya, “Generalised dispersive phase and its effect on four wave mixing in fibers”, Optics Communications 269 (1), p. 206 (2007)

R200. J. Onishi, S. Kojima, and T. Numai, " Effects of Frequency Allocations and Zero-Dispersion Frequencies on FDM Lightwave Transmission Systems,"

J. Lightwave Technol. 25, 1719-1727 (2007).

R201. Y Ito, J Onishi, S Kojima, T Numai, “Influence of modulation formats on FWM noises in FDM optical fiber transmission systems”, Optics

Communications 281 (17) 4515-4522 (2008).

R202. S. Kojima, T. Hino, and T. Numai, "Influence of Frequency Allocations and Optical Filters on FDM Optical Fiber Communications," J. Lightwave

Technol. 25, 3694-3703 (2007)

R203. J Onishi, S Kojima, T Numai, “Effects of frequency and polarization allocations on FDM lightwave transmission systems”, Optics Communications,

281(9) Pages 2627-2632 (2008).

R204. Singh, A., Sharma, A.K., Kamal, T.S. “Investigation on modified FWM suppression methods in DWDM optical communication system”, (2009)

Optics Communications, 282 (3), pp. 392-395.

R205. Nagatani, Y., Ito, Y., Onishi, J., Kojima, S., Numai, T., “Theoretical analysis of frequency allocations in FDM lightwave transmission systems”, (2008)


R206. Mazroa, D., Zsigmond, S., Cinkler, T. Determining the maximum signal power in 10 Gbit/s WDM optical networks (2009) Photonic Network


R207. Ito, Y., Tamo, T., Numai, T. Reduction of four-wave mixing noises in FDM optical fiber transmission systems with quaternary bit-phase arranged

return-to-zero (2009) Optics Communications, 282 (19), pp. 3989-3994.

R208. Yaman, F., Li, G. “Nonlinear impairment compensation for polarization-division multiplexed WDM transmission using digital backward

propagation” (2010) IEEE Photonics Journal, 2 (5), art. no. 5560709, pp. 816-832.

R209. Liang, J., Iwashita, K. “Experimental compensation for FWM induced crosstalk with digital coherent detection” (2011) IEICE Transactions on

Communications, E94-B (2), pp. 558-561.

R210. Sabapathi, T., Sundaravadivelu, S. “Analysis of bottlenecks in DWDM fiber optic communication system” (2011) Optik, 122 (16), pp. 1453-1457.

J44. I. Neokosmidis, T. Kamalakis, A. Chipouras, and T. Sphicopoulos “Estimation of the four-wave

mixing noise probability-density function by the multicanonical Monte Carlo method”, OSA Optics

Letters, 30(1), pp. 11-13 (2005).

The performance of high-powered wavelength-division multiplexed (WDM) optical networks can be severely degraded by four-

wave-mixing- (FWM-) induced distortion. The multicanonical Monte Carlo method (MCMC) is used to calculate the

probability-density function (PDF) of the decision variable of a receiver, limited by FWM noise. Compared with the conventional

Monte Carlo method previously used to estimate this PDF, the MCMC method is much faster and can accurately estimate

smaller error probabilities. The method takes into account the correlation between the components of the FWM noise, unlike the

Gaussian model, which is shown not to provide accurate results.

Citations

R211. A.O. Lima, I.T. Lima, C.R. Menyuk, “Error estimation in Multicanonical Monte Carlo simulations with applications to polarization-mode-dispersion

emulators”, IEEE Journal of Lightwave Technology 23 (11), pp. 3781 (2005).

R212. D. Yevick and T. Lu, “Improved multicanonical algorithms”, JOSA A, Vol. 23, p. 2912 (2006).

R213. Menyuk, C.R., “Statistical errors in biasing Monte Carlo simulations with applications to polarization-mode dispersion compensators”, Journal of

Lightwave Technology 24, pp. 4184-4196 (2006).

R214. Chen, H., Jia, Z.-H. Journal of Optoelectronics Laser 18 (2), pp. 209-212 (2007).

R215. Gerardi, L. Secondini, M. Forestieri, E. “Pattern Perturbation Method for Multicanonical Monte Carlo Simulations in Optical Communications”,

IEEE PTL 19 (23) PP.1934-1936 (2007).

R216. O. V. Sinkin, V. S. Grigoryan, and C. R. Menyuk, "Accurate Probabilistic Treatment of Bit-Pattern-Dependent Nonlinear Distortions in BER

Calculations for WDM RZ Systems," J. Lightwave Technol. 25, 2959-2968 (2007).

R217. Spiller, E.T., Kath, W.L. “A method for determining most probable errors in nonlinear lightwave systems”, (2008) SIAM Journal on Applied

Dynamical Systems, 7 (3), pp. 868-894.


Page 34 / 48

R218. Nagatani, Y., Ito, Y., Onishi, J., Kojima, S., Numai, T. “Theoretical analysis of frequency allocations in FDM lightwave transmission systems”, (2008)




J45. I. Neokosmidis, T. Kamalakis, A. Chipouras and T. Sphicopoulos, “Evaluation of BER degradation

and power limits in WDM networks due to Four-Wave Mixing by Monte-Carlo simulations”,

OSA Journal of Applied Optics, 43 (26), pp. 5023-5032 (2004).

Fiber nonlinearities can degrade the performance of a wavelength-division multiplexing optical network. For high input power, a

low chromatic dispersion coefficient, or low channel spacing, the most severe penalties are due to four-wave mixing (FWM). To

compute the bit-error rate that is due to FWM noise, one must evaluate accurately the probability-density functions (pdf) of both

the space and the mark states. An accurate evaluation of the pdf of the FWM noise in the space state is given, for the first time to

the authors’ knowledge, by use of Monte Carlo simulations. Additionally, it is shown that the pdf in the mark state is not

symmetric as had been assumed in previous studies. Diagrams are presented that permit estimation of the pdf, given the number

of channels in the system. The accuracy of the previous models is also investigated, and finally the results of this study are used

to estimate the power limits of a wavelength-division multiplexing system.

Citations

R220. Chen, H., Jia, Z.-H. Journal of Optoelectronics Laser 18 (2), pp. 209-212 (2007).

J46. T. Kamalakis, D. Varoutas and T. Sphicopoulos, “Statistical Study of In-band Crosstalk

Noise Using the Multi-Canonical Monte Carlo Method”, IEEE Photonics Technology Let., 16

(10), pp. 2242 - 2244 (2004).

In-band crosstalk can pose important limitations in an all-optical wavelength-division-multiplexed network. In this letter, the

multicanonical Monte Carlo (MCMC) method is applied for the study of the statistical behavior of the in-band crosstalk noise.

The proposed method is accurate, efficient, and easy to use. The obtained error probabilities are compared with a previously

proposed semianalytical model and are found to be in excellent agreement. The MCMC method is also used to study the

asymptotic behavior of in-band crosstalk noise.

Citations

R221. A.V. Ram Prasad, M. Meenakshi, “A study on the statistical behaviour of receiving currents in the presence of four wave mixing effect in DWDM

optical systems”, Information Technology Journal 5 (4), pp. 735 (2006).

R222. A.O. Lima, , I.T. Lima, C.R. Menyuk, “Error estimation in Multicanonical Monte Carlo simulations with applications to polarization-mode-

dispersion emulators”, IEEE Journal of Lightwave Technology 23 (11), pp. 3781 (2005).

R223. D. Yevick and T. Lu, “Improved multicanonical algorithms”, JOSA A, Vol. 23, p. 2912 (2006).

R224. Obara H, “Bidirectional WDM transmission technique utilizing two identical sets of wavelengths for both directions over a single fiber”, Journal of

Lightwave Technology Vol. 25 p. 297 (2007).

R225. Menyuk, C.R., “Statistical errors in biasing Monte Carlo simulations with applications to polarization-mode dispersion compensators”, Journal of

Lightwave Technology 24, pp. 4184-4196 (2006).



R227. Bononi, A., Rusch, L.A., Ghazisaeidi, A., Vacondio, F., Rossi, N., “A fresh look at multicanonical Monte Carlo from a telecom perspective”, (2009)

GLOBECOM - IEEE Global Telecommunications Conference, art. no. 5426093

R228. Bononi, A. et al “Multicanonical Monte Carlo for Simulation of Optical Links” in Impact of Nonlinearities on Fiber Optic Communications, Optical

and Fiber Communications Reports (2011), Springer New York

J47. T. Kamalakis and T. Sphicopoulos, “Numerical Study of the Fabrication Tolerance of

Conventional and MMI-Flattened AWGs”, IEEE Photonics Technology Let., 16(8), pp. 1876 - 1878

(2004).

In this letter, the fabrication tolerance of conventional and multimode interference (MMI)-flattened arrayed waveguide gratings

(AWGs) is compared. It is shown that the crosstalk of an MMI-flattened AWG is approximately equal to that of a conventional

AWG with the same 3-dB bandwidth. However, the dispersion of the MMI-flattened AWG is greater than that of the

conventional one and this poses limitations in the maximum bit rate in a cascade of MMI-flattened AWGs.

Citations

R229. Zheng-Kun Qina, Chun-Sheng Maa, De-Lu Li, Da-Ming Zhang and Shi-Yong Liu, “Analysis for fabrication errors of arrayed waveguide grating

multiplexers”, Optics & Laser Technology, 40(2), Pages 235-242 (2008).

R230. De-Lu Li, Chun-Sheng Ma1, Zheng-Kun Qin, Yu-Hai Wang, Da-Ming Zhang and Shi-Yong Liu, “Analysis of polymeric arrayed waveguide grating

multiplexers with non-ideal core cross sections modeled by 'tanh' function”, J. Opt. A: Pure Appl. Opt. 9 884-890 (2008)

R231. Liu, A., Izhaky, N. and Liao, L. (2008) Passive Silicon Photonic Devices, in Silicon Photonics: The State of the Art (ed G. T. Reed), John Wiley & Sons,

Ltd, Chichester, UK. doi: 10.1002/9780470994535.ch7


Page 35 / 48

J48. T. Kamalakis and T. Sphicopoulos, “Asymptotic Behavior of In-band Crosstalk Noise in WDM

Networks”, IEEE Photonics Technology Let., 15 (3), pp.476-479, (2003).

In-band crosstalk noise can pose important limitations in an optical network. To calculate the bit error rate (BER), the crosstalk-

crosstalk beating noise is usually ignored in the literature. In this letter, it is shown how the crosstalk-crosstalk noise can be

taken into account in the analysis of an optical receiver in the case of many independent interferers. It is shown that the

crosstalk-crosstalk noise can influence the value of the BER, change the optimum receiver threshold, and introduce some power

penalty.

Citations

R232. A.V. Ram Prasad, M. Meenakshi, “A study on the statistical behaviour of receiving currents in the presence of four wave mixing effect in DWDM

optical systems”, Information Technology Journal 5 (4), pp. 735 (2006).

R233. K. P. Ho, "Analysis of Direct-Detection DPSK Signal With Homodyne Crosstalk," IEEE J. Lightwave Technol. 23, p. 2681 (2005).

R234. J.C. Attard, J.E. Mitchell, C.J. Rasmussen, “Performance analysis of interferometric noise due to unequally powered interferers in optical networks”,

IEEE Journal of Lightwave Technology 23, p. 1692 (2005).

R235. K.P. Ho, “Wavelength-Division-Multiplexed DPSK Signals” in Phase-Modulated Optical Communication Systems, US Springer (2005).

R236. A.V.RamPrasad and M.Meenakshi “A Theoretical Approach to analyze impact of Four wave mixing on DWDM Systems”, Academic Open Internet

Journal, Volume 17 (2006).

R237. C. Michie, I. Andonovic, R. Atkinson, Y. Deng, J. Szefer, C. Bres, Y. K. Huang, I. Glesk, P. Prucnal, K. Sasaki, and G. Gupta, "Interferometric noise

characterization of a 2-D time-spreading wavelength-hopping OCDMA network using FBG encoding and decoding," J. Opt. Netw. 6, 663-676 (2007)

R238. Bazan, T., Harle, D., Andonovic, I. “Interferometric noise in optical code division multiple access systems” (2006) 2006 International Conference on

Transparent Optical Networks, 3, art. no. 4013806, pp. 97-100.

R239. Glesk, I., Andonovic, I., Michie, C., Prucnal, P.R., Sasaki, K., Gupta, G., “Improving performance FBG-based OCDMA system all-optical signal

processing”, (2008) 2008 IEEE PhotonicsGlobal at Singapore, IPGC 2008, art. no. 4781435

R240. Pires, J.J.O., Cancela, L.G.C. “Estimating the performance of direct-detection DPSK in optical networking environments using eigenfunction

expansion techniques”, (2010) Journal of Lightwave Technology, 28 (13), art. no. 5473090, pp. 1994-2003.


124-131.

J49. T. Kamalakis, T. Sphicopoulos and M. Sagriotis Accurate Error Probability Estimation in the

Presence of In-band Crosstalk Noise in WDM Networks, ΙΕΕΕ Journal of Lightwave Technology,

21(10), pp. 2172-2181 (2003).

In-band crosstalk noise can pose important limitations in wavelength-division-multiplexing (WDM) optical networks. This

paper describes a model that takes into account the statistical behavior of in-band crosstalk noise accurately and that can be used

to estimate the error probability (EP) in a WDM receiver. It is based on the formulation of the moment-generating function of

the decision variable in terms of a double integral, which allows the inclusion of the crosstalk-crosstalk noise, which was

previously neglected in the literature. The optical amplifier noise and the electrical receiver noise are also incorporated, and the

model is used to assess the implications of the crosstalk-crosstalk contribution. With the aid of some examples, it is shown that

the crosstalk-crosstalk noise can influence the value of the EP, change the optimum receiver threshold, and introduce some power

penalty.

Citations

R242. K. P. Ho, "Analysis of Direct-Detection DPSK Signal With Homodyne Crosstalk," IEEE J. Lightwave Technol. 23, p. 2681 (2005).

R243. M.R.G. Leiria and A.V.T. Cartaxo, “Performance Assessment of Transparent Optical Networks with Incoherent Homodyne Crosstalk and

Amplified Spontaneous Emission Noise”, The IASTED Conference on Optical Communication Systems and Networks, Banff, Alberta, Canada (2004).

R244. M.R.G. Leiria and A.V.T. Cartaxo, “Evaluation of transparent optical network performance in presence of incoherent homodyne crosstalk”, Fiber

and integrated optics, 24 p. 315 (2005).

R245. Antoniades, N. Roudas, I. Ellinas, G. Amin, J. “Transport metropolitan optical networking: evolving trends in the architecture design and

computer modeling”, 22, IEEE J. Lightwave Technol. p. 2653 (2004).

R246. L. G. C. Cancela, J. J. O. Pires, "Application of the Saddle Point Method for the Evaluation of the Probability Density Function of Pre-Amplified

OOK Systems in the Presence of Intrachannel Crosstalk," Advanced Industrial Conference on Telecommunications/Service Assurance with Partial

and Intermittent Resources Conference/E-Learning on Telecommunications Workshop (AICT/SAPIR/ELETE'05) (2005).

R247. L. G. C. Cancela and J. J. 0. Pires, “Impact of intrachannel crosstalk on the performance of direct-detection DPSK optical systems”, Quantum

Electronics and Laser Science Conference, 2005. QELS '05.

R248. S.D. Dods, T.B. Anderson, “Calculation of bit-error rates and power penalties due to incoherent crosstalk in optical networks using Taylor series

expansions”, IEEE Journal of Lightwave Technology, 23, p. 1828 (2005).

R249. M.R.G. Leiria and A.V.T. Cartaxo, “Optimization of Optical Add-Drop Multiplexers Based on Arrayed Waveguide Gratings with Fabrication

Errors for Transparent Optical Networks”, Fiber & Integrated Optics, 25, p. 141 (2005).

R250. Roudas, I., Antoniades, N., Amin, J., “Trends in the architectural design and computer modeling of optical metropolitan area networks”, OSA

Trends in Optics and Photonics Series 95 A, pp. 679-681 (2004).

R251. K.P. Ho, “Wavelength-Division-Multiplexed DPSK Signals” in Phase-Modulated Optical Communication Systems, US Springer (2005).


Page 36 / 48

R252. Cancela, L.G.C. Pires, J.J.O. “On the Accuracy of the Gaussian Approximation for Performance Estimation in Optical DPSK Systems with In-Band

Crosstalk”, IEEE International Conference on Communications, 2007. ICC '07 (2007).

R253. Roudas, I. Antoniades, N. Amin, J. “Trends in the architectural design and computer modeling of optical metropolitan area networks”, Optical

Fiber Communication Conference, 2004. OFC 2004.

R254. Urban, P.J., Koonen, A.M.J., Khoe, G.D., de Waardt, H, “Interferometric crosstalk reduction in an RSOA-based WDM passive optical network”,

(2009) Journal of Lightwave Technology, 27 (22), pp. 4943-4953.

R255. Sarkar, S., Das, N.R., “Study of component crosstalk and obtaining optimum detection threshold for minimum bit-error-rate in a WDM receiver”

(2009) Journal of Lightwave Technology, 27 (19), pp. 4366-4373.

R256. Meleiro, Rui Miguel Oliveira, “Optical processing devices and techniques for next generation optical networks”,

http://hdl.handle.net/10773/2683 (2010)

R257. Urban, P.J., De Waardt, H., Ciaramella, E., Koonen, A.M.J. Reduction of the influence of optical interferometric crosstalk noise in a WDM-PON

system with a reflective semiconductor optical amplifier: An overview (2010) 2010 12th International Conference on Transparent Optical Networks,

ICTON 2010, art. no. 5549068.


124-131.

J50. T. Kamalakis and T. Sphicopoulos “Application of the Saddle Point Method for the Evaluation of

Crosstalk Implications in an Arrayed Waveguide Grating Interconnection”, IEEE Journal of


The effect of in-band crosstalk can pose severe limitations in an optical network. In this paper, the implications of in-band

crosstalk induced by an arrayed-waveguide grating (AWG) router in a passive N×N optical interconnection are analyzed with

non-Gaussian statistics using a numerical model. The model is based on the saddle point approximation and takes into account

fluctuations of the transfer function's sidelobes induced by the phase errors in the grating arms, phase noise, polarization

variations, bit misalignment, and shot and thermal noise. The influence of these effects on the interconnection's bit error rate

(BER) is analyzed. The validity of the Gaussian assumption for the crosstalk noise statistics is discussed. Finally, the model is

used to examine the mean crosstalk requirements for various numbers of network nodes.

Citations

R259. M.R.G. Leiria and A.V.T. Cartaxo, “Performance Assessment of Transparent Optical Networks with Incoherent Homodyne Crosstalk and

Amplified Spontaneous Emission Noise”, The IASTED Conference on Optical Communication Systems and Networks, Banff, Alberta, Canada (2004).

R260. M.R.G. Leiria and A.V.T. Cartaxo, “Evaluation of transparent optical network performance in presence of incoherent homodyne crosstalk”, Fiber

and integrated optics, 24 p. 315 (2005).

R261. L. G. C. Cancela, J. J. O. Pires, "Application of the Saddle Point Method for the Evaluation of the Probability Density Function of Pre-Amplified

OOK Systems in the Presence of Intrachannel Crosstalk," Advanced Industrial Conference on Telecommunications/Service Assurance with Partial

and Intermittent Resources Conference/E-Learning on Telecommunications Workshop (AICT/SAPIR/ELETE'05) (2005).

R262. M.R.G. Leiria and A.V.T. Cartaxo, “Optimization of Optical Add-Drop Multiplexers Based on Arrayed Waveguide Gratings with Fabrication Errors

for Transparent Optical Networks”, Fiber & Integrated Optics, 25, p. 141 (2005).

R263. S.Tsai, R.G.Plumb, I.H.White, “Robust Indoor Data Distribution using Infrared with Radio Back-up”,

http://eeprofs.iust.ac.ir/Sadr/ph2004proceedings.pdf

J51. T. Kamalakis, T. Sphicopoulos and D. Syvridis, “An Estimation of Performance Degradation Due

to Fabrication Errors in AWGs”, IEEE Journal of Lightwave Technology, 20 (9), pp. 1779 - 1787

(2002).

Arrayed waveguide gratings (AWGs) are important components for the realization of wavelength-division multiplexing optical

networks. Their filtering performance is limited by the existence of phase errors in the grating waveguides due to fabrication

imperfections. In this paper, the statistical properties of the phase errors are related to the waveguide imperfections using a

variation of the effective index method. The filtering quality of the AWG is then investigated by considering the behavior of its

transfer function in the presence of random phase errors. The probability density function of the transfer function's sidelobes is

evaluated numerically, and the results are justified using theoretical considerations. Finally, the behavior of the maximum

sidelobe level is also analyzed numerically, and universal diagrams are presented that allow the estimation of its mean value,

standard deviation, and cumulative distribution function for every specific AWG.

Citations

R264. “Analysis method of the effect of fabrication errors on a planar waveguide demultiplexer”, Optical and Quantum Electronics 38, pp. 1203-1216

(2006).



R266. J. An, J. Xia, J. Li, D. Gao, J. Li, H. Wang, X. Hu, “Numerical analysis for phase error of silica-based arrayed waveguide grating”, Pan Tao Ti Hsueh

Pao/Chinese Journal of Semiconductors 26 (SUPPL.), pp. 220 (2005).

R267. Patrick Faraj, Jochen Leibrich and Werner Rosenkranz, “Coding Gain of Basic FEC Block-Codes in the Presence of ASE Noise”, ICTON 2003

(We.C.7)


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R268. Pascual Munoz “Arrayed Waveguide Gratings: modeling, design and applications”, PhD thesis, Departamento de Comunicaciones Universidad

Politecnica de Valencia (2003)

R269. Zheng-Kun Qina, Chun-Sheng Maa, De-Lu Li, Da-Ming Zhang and Shi-Yong Liu, “Analysis for fabrication errors of arrayed waveguide grating

multiplexers”, Optics & Laser Technology, 40(2), Pages 235-242 (2008).

R270. Weiguo Yang, “An Analytic Approach to Random Phase Error and Its Impact on the Performance and Design of Arrayed-Waveguide Gratings”,

IEEE JQE 43(7) pp. 568-571 (2007)

R271. Kim, D.-J., Lee, J.-M., Song, J.H., Pyo, J., Kim, G. “Crosstalk reduction of silicon nanowire AWG with shallow-etched grating arms”, (2008) 2008 5th

International Conference on Group IV Photonics, GFP, art. no. 4638187, pp. 323-325.

R272. Kim, D.-J., Lee, J.-M., Song, J.H., Pyo, J., Kim, G. “Crosstalk reduction in a shallow-etched silicon nanowire AWG”, (2008) IEEE Photonics

Technology Letters, 20 (19), pp. 1615-1617.

R273. Maru, K. “Performance analysis of a synchronized-router-based flat-passband filter using multiple-input arrayed waveguide grating with phase

errors” (2011) Journal of Lightwave Technology, 29 (13), art. no. 5767537, pp. 1965-1974.

R274. Sinefeld, D., Marom, D.M. “Insertion loss and crosstalk analysis of a fiber switch based on a pixelized phase modulator” (2011) Journal of

Lightwave Technology, 29 (1), art. no. 5629343, pp. 69-77.

J52. T. Kamalakis and T. Sphicopoulos, “An Efficient Technique for the Design of an Arrayed

Waveguide Grating with Flat Spectral Response”, IEEE Journal of Lightwave Technology, 19 (11),

pp.1716-1725 (2001).

The spectral response of the arrayed-waveguide grating (AWG) plays an important role in optical networks. Ideally, the grating

should have a rectangular transfer function to reduce the need for accurate wavelength control and achieve low crosstalk. A new

technique for designing an AWG with flat spectral response is presented. The problem of the optimization of the transfer function

is reduced to that of adjusting the arrayed waveguide lengths and their relative positions on the edge of the free propagating

regions in order to minimize a certain error function. As a result, the waveguide lengths and their positions are determined

using a rigorous mathematical procedure. The resultant transfer function is flat with low sidelobes.

Citations:

R275. J.J. He, “Phase-dithered waveguide grating with flat passband and sharp transitions”, IEEE Journal of Selected Topics in Quantum Electronics, 8,

p.1186 (2002).

R276. T. Y. Tsai, Z. C. Lee, Y. C. Fang, M.H. Cha, “A novel compact wavelength-division multiplexer using highly dispersive waveguide-to-waveguide

coupling”, Optics Communications 263 (2), pp. 197 (2006).

R277. C. S. Ma, Z.-K. Qin, H. M. Zhang, H. Li, D. M. Zhang, S. Y. Liu, “Arrayed waveguide grating multiplexer with boxlike spectral response”,

Microwave and Optical Technology Letters 48, pp. 916 (2006).

R278. Z. K. Qin, C. S. Ma, D. L. Li, H. M. Zhang, D. M. Zhang, S. Y. Liu, “Analysis for passband flatness of arrayed waveguide grating multiplexer”,

Guangdianzi Jiguang/Journal of Optoelectronics Laser 17 (5), p. 533 (2006).



R280. T. Y. Tsai, Z. C. Lee, J. R Chen, C.C. Chen, Y. C. Fang, M. H. Cha, “Ultra-short wavelength filters using mode-related dispersion in dual-mode

waveguides”, Microwave and Optical Technology Letters 46 (3), p. 225 (2005).

R281. T. Y. Tsai, Z. C. Lee, J. R. Chen, C. C. Chen, Y.C. Fang, M. H. Cha, “A novel ultracompact two-mode-interference wavelength division multiplexer

for 1.5-μm operation”, IEEE Journal of Quantum Electronics 41 (5), p. 741 (2005).

R282. C. S.Ma, H. M. Zhang, D. M. Zhang, S.-Y. Liu, “Box-like spectral response of arrayed waveguide grating multiplexers”, Optics Communications

249 (1-3), pp. 209-216 (2005).

R283. X. Liu, C. Yu, Z. Zeng, L. Liu, “Design and applications of planar waveguide interleaving filters”, Proceedings of SPIE - The International Society

for Optical Engineering 5623 (PART 2), p. 594 (2004).

R284. Farahi, F. “Multimode interference spectrometer”, Proceedings of SPIE - The International Society for Optical Engineering 5502, pp. 342 (2004).

R285. X. Zhang, L. J Chang, L. Song, “Compact Structural Design of Arrayed Waveguide Grating”, Acta Photonica Sinica, 33, p. 272 (2004)

R286. Huang XP, Spuler SM, Sappey AD, “Varied line-space grating for flat spectral response of coupling to single-mode fiber”, Applied Optics Vol. 46

pp. 147 (2007).

R287. Maru, K., Mizumoto, T., Uetsuka, H. “Modeling of multi-input arrayed waveguide grating and its application to design of flat-passband response

using cascaded mach-zehnder interferometers”, IEEE Journal of Lightwave Technology, Vol. 25, pp. 544-555 (2007).

R288. Martin Maier “Architecture and Access Protocol for a Wavelength–Selective Single–Hop Packet Switched Metropolitan Area Network”, Doktor der

Ingenieurwissenschaften (2008).

R289. K. Maru and Y. Abe, “Low-loss, flat-passband and athermal arrayed-waveguide grating multi/demultiplexer”, Optics Express, Vol. 15, Issue 26, pp.

18351-18356 (2007).

R290. X.-P. Huang, Scott M. Spuler, and Andrew D. Sappey, “Varied line-space grating for flat spectral response of coupling to single-mode fiber”,

Applied Optics, Vol. 46, Issue 2, pp. 147-153 (2007).

R291. A. Gholipour and R. Faraji-Dana, "Nonuniform Arrayed Waveguide Gratings for Flat-Top Passband Transfer Function," J. Lightwave Technol. 25,

3678-3685 (2007).

R292. Huang, Pei, Spuler, Scott, “Apparatus and method for producing a flat-topped filter response for (de)multiplexer having a diffraction grating with

variable line spacing”, (Patent – 2004).

R293. Q. Zhengkun et al “Fabrication of a 17x17 Polymer Arrayed Waveguide Grating with Flat Spectral Response”, Jounral of Semiconductors, Vol. 29,

No. 9 (2008).


Page 38 / 48

R294. Maria L. Calvo, “Optical Waveguides: From Theory to Applied Technologies“,CRC Press; 1 edition (January 19, 2007)

R295. Koichi Maru and Yusaku Fujii, "Reduction of chromatic dispersion due to coupling for synchronized-router-based flat-passband filter using

multiple-input arrayed waveguide grating," Opt. Express 17, 22260-22270 (2009)

R296. Sahu, P.P. “A compact optical multiplexer using silicon nano-waveguides”, IEEE Journal on Selected Topics in Quantum Electronics, 15 (5), art. no.

5175496, pp. 1537-1541 (2009).

R297. Qin, Z.-K., Ma, C.-S., “Fabrication of A 17x17 polymer arrayed waveguide grating with flat spectral response, (2010) Microwave and Optical

Technology Letters, 52 (7), pp. 1653-1655.”

R298. Qin, Z.-K., Ma, C.-S. “Optimum design and fabrication of a fluoropolymer arrayed waveguide grating with flat spectral response” (2011) Tien Tzu

Hsueh Pao/Acta Electronica Sinica, 39 (3), pp. 609-612.


Page 39 / 48

Abstracts and Citations of Conference

Proceedings C1. T. Kamalakis, Georgia Dede, Katerina Margariti, Panagiotis Kanakis, Dimitris Alexandropoulos

and Nikos Vainos, "Photonic Technologies for Next Generation Home and Office Networks",

In this paper, we discuss how wireline and wireless photonic technologies can be used to support high bandwidth connections

inside a home or office setting. We first present a set of requirements that photonic home networks must meet in order to provide

a viable alternative. These requirements are somewhat different than what photonic technologies had to meet in long-haul and

metropolitan area networks. We then discuss enabling technologies for the optical home network, including optical wireless,

visible light communications and plastic optical fibers. We also present some basic home networking network architectures that

take advantage of multiple technologies in order to provide inter and intra-room connectivity. Some concluding remarks are

given and an outlook for optical home technologies is briefly outlined.

C2. K. Margariti and T. Kamalakis, "Coherent Optical Wireless Systems for High Speed Local Area

Networks with Increased Resilience",

Optical wireless systems constitute an interesting alternative for supporting next generation local area networks with high speed

gigabit-per-second connectivity. Their advantages include a vast license-free spectrum, an abundance of transmission bandwidth,

limited health side-effects and zero electromagnetic interference with existing legacy radio networks and other devices. On the

other hand, coherent detection is being widely considered in fiber-optic communication systems as a means to provide optical

gain at the receiver while at the same time achieving increased spectral efficiency and wavelength selectivity. In this paper we

propose to make the best of both worlds combining coherent detection and optical wireless. The improved power budget may

ensure better coverage conditions, higher data rates and resilience against shadowing and beam obstruction effects. We discuss

the factors that may contribute to the performance degradation in such systems such as laser phase noise, etc. We present some

basic calculations and attempt to provide a first indication on the influence of these factors.

C3. P. Kanakis, T. Kamalakis and A. Bogris, " Slow Light in Photonic Crystal Waveguides as a Key

Enabler for Future Optical Network Technologies",

All-optical technologies promise to alleviate bottleneck effects associated with electroptic conversions currently required in major

network nodes. Nanophotonic structures such as photonic crystals may be used to manipulate light thereby adding intelligence

in the optical physical layer. All-optical applications like optical buffering, optical switching, signal regeneration etc. are only a

few applications that can be considered in future network nodes with integrated photonic crystal devices. Slow light propagation,

i.e. reducing the group velocity of the propagating optical signals in photonic crystal waveguides can further enhance the signal

processing capabilities of nanophotonic devices. Slow light is ideal for realizing optical buffers in integrated form while at the

other hand it can lead to large increase of nonlinearities. In this paper, we focus on the capabilities and restrictions of slow-light

photonic crystal waveguides in a few basic all-optical applications, like optical buffering and wavelength conversion. The role of

the photonic crystal structural characteristics related to the performance of slow-light all-optical functionalities is shown. Future

perspective for the visualization of PCSW slow-light devices in all-optical networks is evaluated.

C4. Vasilopoulou, M.; Georgiadou, D.G.; Soultati, A; Papadimitropoulos, G.; Argitis, P.;

Alexandropoulos, D.; Vainos, N.; Politi, C.T.; Kamalakis, T.; Davazoglou, D., "Enhancing spectral

response of organic photodetectors through surface modification of metal oxide electrodes,"

Transparent Optical Networks (ICTON), 2014 16th International Conference on , vol., no., pp.1,4, 6-

10 July 2014

For bulk heterojunction (BHJ) organic photodetectors (OPDs), it was found that the direct contact between the deposited

electrode and the photoactive organic layer leads to severe quenching of excitons. Improved device architectures hence involve the

incorporation of charge transport layers, such as metal oxide layers, between electrodes and the active layer, allowing

substantially higher internal efficiencies to be achieved. We show here that through appropriate surface modification of the

underlying metal oxide layer, i.e. through hydrogen annealing, a novel light trapping scheme for the photoactive layer deposited

on top of the metal oxide layer is developed. This is achieved via optimization of polymer morphology and chain alignment in

OPD devices through the formation of an extended interfacial hydrogen bonding network acting as nucleation site for enhanced

chain alignment within the bulk material.

C5. Margariti, Katerina; Kamalakis, Thomas, "Coherent optical wireless: An alternative technology for

broadband indoor communications," Transparent Optical Networks (ICTON), 2014 16th

International Conference on , vol., no., pp.1,4, 6-10 July 2014

Coherent detection technology which is commonplace in optical fiber-based systems, may serve as a means to compensate for path

loss in line-of-sight and diffuse optical wireless systems. In this study, a high-speed optical wireless communication system based


Page 40 / 48

on coherent detection is investigated. Our analysis includes the laser phase noise which, to the extent of our knowledge, has not

been adequately addressed in the literature in the field of optical wireless. Our results indicate that coherent detection may

significantly alleviate the power budget of line-of-sight and non-line-of-sight configurations. It can enable Gbps wireless data

transmission under moderate transmission powers compliant with eye safety regulations and the operational properties of optical

transmitters typically found in the commercial marketplace.

C6.Vainos, N., Alexandropoulos, D., Politi, C., Matrakidis, C., Dede, G., Kamalakis, T.,

Kouloumentas, C., Avramopoulos, H., Couris, S., Rokkas, T., Varoutas, D., Vasilopoulou, M.,

Davazoglou, D., Pistolis, G., Argitis, P. "Polymer photonic technologies for optical communications",

(2013) International Conference on Transparent Optical Networks, art. no. 6603053.

The impact of photonics in telecommunications is indisputably massive; however it relies on efficient cost reduction which is in

turn only possible if significant cost savings are made at all steps in the development of the photonic device from the material to

packaging. The PHOTOPOLIS consortium has identified polymer technology as the ideal solution for producing low-cost

devices. The paper aims to discuss the status of polymer photonic components and subsystems able to generate, transmit and

manage optical information in a cost effective manner.

C7. Kamalakis, T., Alexandropoulos, D., Dede, G., Kanakis, P., Politi, T., Vainos, N. "Numerical

simulation and design of organic integrated optical circuits: The PHOTOPOLIS approach", (2013)

International Conference on Transparent Optical Networks, art. no. 6602917.

Organic materials may provide an interesting alternative to integrated optics on either a stand-alone or a hybrid approach where

they are combined with conventional material platforms. The development of accurate numerical tools is of paramount

importance for designing these structures for telecommunication applications. In this paper, we demonstrate how standard

computational electromagnetic methods can be applied in such designs, highlighting the device features that are important from a

telecommunications point-of-view. Our analysis focuses on integrated optical waveguides, waveguide couplers, microring

resonators and other passive structures. To analyze these devices we make use of analytical methods, such as coupled mode theory

and numerical tools such as the finite difference frequency domain method. The tools outlined here form the basis for designing

the structures that will be studied within the PHOTOPOLIS initiative

C8. Kanakis, P., Kamalakis, T., Sphicopoulos, T. "Systematic optimization of the storage capacity of

slow light photonic crystal waveguides.", (2013) Proceedings of SPIE - The International Society for

Optical Engineering, 8767, art. no. 876702, .

A systematic design process of slow light photonic crystal slab waveguides is presented with the aim of maximizing the storage

capacity. Dispersion effects and propagation losses characteristics are included in order to increase the design accuracy. Our

procedure allows the optimization of the structure at the same time by varying as many as ten design parameters. We show that

storage capacities of almost 32bits at 40Gb/s and 65bits at 100Gb/s can be obtained.

C9. Kanakis, P., Kamalakis, T., Sphicopoulos, T. "Nonlinear slow light propagation in photonic crystal

slab waveguides: Theory and practical issues", (2012) Proceedings of SPIE - The International Society

for Optical Engineering, 8425, art. no. 842503, .

In this paper, we consider the propagation of slow light optical pulses inside photonic crystal slab waveguides (PCSW) both from

a theoretical and an application point-of-view. The numerical model used relies on a nonlinear envelope propagation equation

that includes the effects of second and third order dispersion, optical losses and self phase modulation. Pulse propagation is

examined both in the linear and nonlinear regime. It is numerically shown that for rates of 10Gb/s, the order of nanosecond

delays can be achieved through the PCSW defect modes without excessive pulse broadening in the nonlinear regime. In the

nonlinear case, it is shown that soliton pulses exhibit less broadening than pulses in the linear case. In comparing the linear and

the non-linear case we consider launching pulses with the same initial full width at half maximum or the same RMS width. The

influence of optical losses on the soliton pulse broadening factor is also incorporated and discussed providing a more practical

perspective. The results demonstrate the potential of implementing a variety of linear and nonlinear signal processing

applications in PCSWs, such as optical buffering.

C10. Kamalakis, T., Avaritsiotis, N., Sphicopoulos, T., ‘Efficient analysis of nano-photonic coupled

resonator devices using coupled mode theory’, (2011) International Conference on Transparent Optical

Networks, art. no. 5971037 (invited paper).

Nanophotonic technologies may open up to new paths to optoelectronic integration. Coupled resonator photonic crystal devices

may find important applications in both the linear and the non-linear regime. These devices are well suited for coupling of mode

analysis, which usually requires much less computational resources compared Finite Difference Time Domain (FDTD) schemes.

Coupled mode models also provide a useful physical insight in the device operation. In this paper, we present a general coupled

mode theoretic model for the treatment of coupled cavity devices incorporating various phenomena such as dispersion, frequency

variation of the coupling coefficients, non-adjacent cavity coupling and waveguide mode self coupling. The model is validated

comparing its results against the FDTD method and the strength of the underlying assumptions is validated.


Page 41 / 48

C11. Kamalakis, T., Walewski, J.W., Ntogari, G., Mileounis, G., “Light-emitting diodes: The unknown

entities” (2010) 2010 12th International Conference on Transparent Optical Networks, ICTON 2010,

art. no. 5549134.

Light-Emitting Diodes (LEDs) constitute a low-cost choice for optical transmitters in medium-bit-rate. What differentiates such

applications from, e.g., backhaul optical networks, is that for low-cost applications, the LED used is generally not as well

characterised by the manufacturer as, are for example, optical fibre amplifiers. While for simple modulation formats like on-off

keying (OOK) this lack of knowledge is not always an impediment, in any other situation one faces the often puzzling behaviour

of commercial LEDs. In this tutorial the main electro-optical characteristics of LEDs are introduced and the models available in

the literature are shown to be inadequate when designing optical links based on advanced modulation techniques or even OOK at

very high data rates. As a way out of this grid lock a reverse-engineering approach is presented, enabling the introduction of a

realistic model for commercially available LEDs.

R299. Schueppert, M.; Kruglov, R.; Loquai, S.; Bunge, C., "Nonlinearities Originated in a Red RC-LED and Their Impact on Spectrally Efficient

Modulation," Photonics Technology Letters, IEEE , vol.PP, no.99, pp.1,1

R300. Schueppert, Manuel; Kruglov, Roman; Bunge, Christian-Alexander, "Compensation of LED Nonlinearities in a Gigabit Polymer Optical Fiber

Transmission link using a Combined Decision Feedback and Volterra-Series," Photonic Networks; 16. ITG Symposium; Proceedings of , vol., no.,

pp.1,6, 7-8 May 2015

C12. Mantzoukis, N., Vgenis, A., Petrou, C.S., Roudas, I., Kamalakis, T., Raptis, L. “Design

guidelines for electronic PMD equalizers used in coherent PDM QPSK systems”, (2010) European

Conference on Optical Communication, ECOC, 1-2, art. no. 5621333.

We theoretically study the performance of various fractionally-spaced, electronic PMD equalizers in coherent optical PDM

QPSK systems using the multicanonical Monte Carlo method. We calculate the required number of equalizer taps for a specific

outage probability and different system margins.

R301. Chongjin Xie, "Impact of nonlinear and polarization effects in coherent systems," Opt. Express 19, B915-B930 (2011).

R302. P. Serena, N. Rossi, O. Bertran-Pardo, J. Renaudier, A. Vannucci, and A. Bononi, "Intra- Versus Inter-Channel PMD in Linearly Compensated

Coherent PDM-PSK Nonlinear Transmissions," J. Lightwave Technol. 29, 1691-1700 (2011).

C13. Bouchet, O., Porcon, P., Wolf, M., Grobe, L., Walewski, J.W., Nerreter, S., Langer, K.-D.,

Fernández, L., Vucic, J., Kamalakis, T., Ntogari, G., Gueutier, E. “Visible-light communication system

enabling 73 Mb/s data streaming”, IEEE Globecom Workshops, GC'10, art. no. 5700092, pp. 1042-

1046 (2010).

The hOME Gigabit Access (OMEGA) home-area-network project aims at bridging the gap between home and access network

and providing Gb/s connectivity to users. The project considers a combination of various technologies such as radio-frequency

and wireless optical links operating at infrared and visible wavelengths. When combined with power-line communications

(PLC), this enables a home backbone that meets the project’s “without new wires” vision. A technology-independent MAC layer

will control this network and provide services as well as connectivity to any number of devices the user wishes to connect to in

any room of a house/apartment. In order to make this vision come true, substantial progress had to be achieved in the fields of

optical wireless physical layer development and data-link-layer protocol design. This paper reports an experimental

demonstration of an indoor visible-light wireless link including a MAC layer protocol adapted to optical wireless

communications systems. The system operates at 84Mb/s broadcast and was successfully used to transmit three highdefinition

video streams.

R303. Guo, W., Li, Q., Yu, H.-Y., Liu, J.-H., A parallel transmission MAC protocol in hybrid VLC-RF network, (2015) Journal of Communications, 10 (1),

pp. 80-85.

R304. Yeh, C.H., Chow, C.W., Chen, H.Y., Chen, J., Liu, Y.L., Adaptive 84.44-190 Mbit/s phosphor-LED wireless communication utilizing no blue filter at

practical transmission distance, (2014) Optics Express, 22 (8), pp. 9783-9788.

R305. Luo, P., Ghassemlooy, Z., Le Minh, H., Tang, X., Tsai, H.-M., Undersampled phase shift ON-OFF keying for camera communication, (2014) 2014 6th

International Conference on Wireless Communications and Signal Processing, WCSP 2014, art. no. 6992043, .

R306. Wang, W., Liu, H.-F., Wang, N., Hui, Z., Song, C., Design and analysis of traffic information transmission system based on visible light

communication, (2013) Journal of Harbin Institute of Technology (New Series), 20 (5), pp. 57-61.

R307. Amano, Y., Kamakura, K., Yamazato, T., Alamouti-type coding for visible light communication based on direct detection using image sensor, (2013)

GLOBECOM - IEEE Global Telecommunications Conference, art. no. 6831438, pp. 2430-2435.

R308. Ahn, K.-I., Kwon, J.K., Color intensity modulation for multicolored visible light communications, (2012) IEEE Photonics Technology Letters, 24 (24),

art. no. 6341052, pp. 2254-2257.

R309. Xi, C., Mirvakili, A., Koomson, V.J., A visible light communication system demonstration based on 16-level pulse amplitude modulation of an LED

array, (2012) 2012 Symposium on Photonics and Optoelectronics, SOPO 2012, art. no. 6271071,

R310. Wang, Z., Zhong, W.-D., Yu, C., Chen, J., Shin, C.P., Francois, Chen, W., Performance of dimming control scheme in visible light communication

system, (2012) Optics Express, 20 (17), pp. 18861-18868. Cited 26 times.

R311. Wang, Z., Yu, C., Zhong, W.-D., Chen, J., Chen, W., Performance of a novel LED lamp arrangement to reduce SNR fluctuation for multi-user visible

light communication systems, (2012) Optics Express, 20 (4), pp. 4564-4573.


Page 42 / 48

R312. Datiri, N.B., Mirvakili, A., Sthalekar, C., Fu, E., Xi, C., Nercessian, S., Shah, T., Noorani, B., Koomson, V.J., The smart room: A 100 Mb/s integrated

optical access point transceiver for indoor visible light communication, (2012) Proceedings of SPIE - The International Society for Optical Engineering,

8282, art. no. 82820K, .

R313. Funahashi, A., Kobayashi, K., Okada, H., Katayama, M., i-LightHouse: A visible light communication system for the visually impaired, (2011) IEEE

International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, art. no. 6139651, pp. 1026-1030.

R314. Ahn, K.-I.; Kwon, J.K., "Color Intensity Modulation for Multicolored Visible Light Communications," Photonics Technology Letters, IEEE , vol.24,

no.24, pp.2254,2257, Dec.15, 2012, doi: 10.1109/LPT.2012.2226570

C14. Bouchet, O., Porcon, P., Walewski, J.W., Nerreter, S., Langer, K.-D., Fernández, L., Vučić, J.,

Kamalakis, T., Ntogari, G., Neoskosmidis, I., Gueutier, E. “Wireless optical network for a home

network”, (2010) Proceedings of SPIE - The International Society for Optical Engineering, 7814, art.

no. 781406,

During the European collaborative project OMEGA, two optical-wireless prototypes have been developed. The first prototype

operates in the near-infrared spectral region and features Giga Ethernet connectivity, a simple transceiver architecture due to the

use of on-off keying, a multi-sector transceiver, and an ultra-fast switch for sector-to-sector hand over. This full-duplex system,

composed by one base station and one module, transmits data on three meters. The second prototype is a visible-light-

communications system based on DMT signal processing and an adapted MAC sublayer. Data rates around to 100 Mb/s at the

physical layer are achieved. This broadcast system, composed also by one base station and one module, transmits data up to two

meters. In this paper we present the adapted optical wireless media-access-control sublayer protocol for visible-light

communications. This protocol accommodates link adaptation from 128 Mb/s to 1024 Mb/s with multi-sector coverage, and half-

duplex or full-duplex transmission.

C15.Dede G., Varoutas D., Kamalakis T., Goni G., Javaudin J.P., "Criteria and Factors affecting home

networks deployment: Evidence from the ICT-OMEGA project", ICT - Mobile Summit 2009,

Santander, Spain.

Home networks (HNs) will play an important role in the widespread, adoption of broadband services. The OMEGA project aims

to provide the next, generation HN combining several diverse wireless and wireline technologies. In the world of converging

heterogeneous HN, a system designer needs to be aware of many technical, economic, social as well as other issues related to the

deployment of broadband services and their relative importance. In this paper the methodology of pairwise comparison is used as

a roadmapping tool in order to quantify the importance of these critical issues and to define the critical factors that should be be

taken into account for service deployment over gigabit home networks as in case of ICT-OMEGA Network. The approach is part

of the AHP (Analytic Hierarchy Process), which is applied in three levels (objective-criteria-factors). The High Definition

Television and Voice over IP services are addressed and these services are decomposed in general characteristics and quantitative

or qualitative technological aspects that will be prioritized. For this reason an online survey platform, including the building of

the corresponding algorithm, has been developed and illustrated.

C16. O'Brien, D.C., Faulkner, G., Le Minh, H., Bouchet, O., El Tabach, M., Wolf, M., Walewski,

J.W., Randel, S., Nerreter, S., Franke, M., Langer, K.-D., Grubor, J., Kamalakis, T., “Gigabit optical

wireless for a home access network”, (2009) IEEE International Symposium on Personal, Indoor and

Mobile Radio Communications, PIMRC, art. no. 5449935.

Future Home Access Networks (HANs) should operate at Gbit/s and provide data services that are as straightforward to use as

an electrical outlet or any other utility. This is an extremely challenging goal, and an EU funded project 'Home Gigabit Access

Networks' (OMEGA) aims to achieve this. In this project a significant part is to realize bi-directional Gigabit infrared (IR)

optical wireless communications. In this paper we introduce the overall approach to the HAN, and outline the challenges and

approaches required to implement these IR Gigabit links. Results from a proof-of-concept 1.25Gbit/s light-of-sight (LOS) IR link

are shown, as well as designs for the first IR link demonstration.

R315. Langer, K.-D., Vučić, J., Kottke, C., Del Rosal, L.F., Nerreter, S., Walewski, J., “Advances and prospects in high-speed information broadcast using

phosphorescent white-light LEDs”, (2009) ICTON 2009: 11th International Conference on Transparent Optical Networks, art. no. 5184994, .

R316. O'Brien, D., “Indoor optical wireless communications: Recent developments and future challenges” (2009) Proceedings of SPIE - The International

Society for Optical Engineering, 7464, art. no. 74640B, .

R317. Inan, B., Lee, S.C.J., Randel, S., Neokosmidis, I., Koonen, A.M.J., Walewski, J.W., “Impact of LED nonlinearity on discrete multitone modulation”

(2009) Journal of Optical Communications and Networking, 1 (5), art. no. 5259919, pp. 439-451.

R318. Inan, B., Lee, S.C.J., Randel, S., Neokosmidis, I., Koonen, A.M.J., Walewski, J.W., “The impact of LED transfer function nonlinearity on highspeed

optical wireless communications based on discretemultitone modulation”, (2009) Conference on Optical Fiber Communication, Technical Digest

Series, art. no. 5032318.

R319. Zhou, Z., Xiuhua, Y., Jin, W., “Improved neural network algorithm application in the compensation of wavefront distortion”, (2009) Proceedings of

SPIE - The International Society for Optical Engineering, 7279, art. no. 72791F


Page 43 / 48

C17. Mantzoukis, N.; Petrou, C.S.; Vgenis, A.; Roudas, I.; Kamalakis, T.; Raptis, L., "Electronic

equalization of polarization mode dispersion in coherent POL-MUX QPSK systems," Optical

Communication, 2009. ECOC '09. 35th European Conference on , vol., no., pp.1-2, 20-24 Sept. 2009

We present a comparison of adaptive electronic PMD equalizers for coherent phase - and polarizationdiversity, QPSK receivers

using the multicanonical Monte Carlo method . A 5-tap equalizer using the CMA, sufficiently reduces the outage probability

below 10-5.

C18. D. C. O'Brien, G. Faulkner, O. Bouchet, M. Tabach, M. Wolf, J. W. Walewski, S. Randel, S.

Nerreter, M. Franke, K. Langer, J. Grubor, and T. Kamalakis, “Home access networks using optical

wireless transmission”, 19th IEEE International Symposium on Personal, Indoor Mobile Radio

Communications, Cannes, France (2008).

Fibre to the home and other ‘last-mile’, transmission technologies provide end-user data rates of at least 100 of Mbit/s. These

technologies are currently deployed around the world, and in the short term gigabit-class home access networks will be required

if this capacity is to be fully used, and new services are to be developed. In order to meet this goal, the Home Gigabit Access

project (OMEGA, EU FP 7-1) aims at a range of transmission techniques and intelligent control. A significant part of this effort

is devoted to two areas of optical wireless communications. First, high-speed line-of-sight systems can provide data rates limited

by the system components, rather than any spectrum allocation, and the project aims to demonstrate Gbit/s wireless

transmission in the near-infra-red region of the optical spectrum. A cellular system will be used to achieve this, and in this paper

we describe the basic design constraints and preliminary design decisions. Second, visible-light communications is an area of

growing research interest, and a system that uses white light LEDs for both illumination and data broadcasting is under

development as part of the OMEGA project. Its role will be mainly to serve as broadcast backup for the 1-Gbit/s point-to-point

link, with target data rates of 100Mbit/s in typical room environments. In the paper the basic characteristics of the system, as

well as the challenges in providing high data rates over the limited LED bandwidth are described.

Citations:

R320. Vucic, J.; Kottke, C.; Paraskevopoulos, A.; Langer, K.-D, Nerreter, S. Walewski, J. W. “High-Speed Optical-Wireless Communications for Indoor

Applications”, Breitbandversorgung in Deutschland (ITG-FB 220)

R321. Lubin Zeng; O'Brien, D.; Hoa Minh; Faulkner, G.; Kyungwoo Lee; Daekwang Jung; YunJe Oh; Eun Tae Won; , "High data rate multiple input

multiple output (MIMO) optical wireless communications using white led lighting," Selected Areas in Communications, IEEE Journal on , vol.27,

no.9, pp.1654-1662, December 2009

C19. O. Bouchet, M. Tabach, M. Wolf2, D. C. O'Brien, G. E. Faulkner, J. W. Walewski, S. Randel, M.

Franke, S. Nerreter, K. Langer, J. Grubor and T. Kamalakis, “Hybrid Wireless Optics (HWO):

Building the Next-Generation Home Network”, CSNDSP08 Graz, Austria (2008).

Gigabit home access networks (HANs) are a pivotal technology to be developed if the European Union (EU) Vision of the Future

Internet is to be realised. Consumers will require such HANs to be simple to install, without any new wires, and easy enough to

use so that information services running on the HAN will be ldquojust another utility,rdquo as, for instance, electricity, water

and gas are today. The hOME Gigabit Access (OMEGA) HAN project [1] aims at bridging the gap between home and access

network, providing Gbit/s connectivity to users. The project considers a combination of various technologies such as radio

frequency (RF) and free-space or wireless optical links (FSO - operating at infrared and visible wavelengths) in order to meet

user demands and provide wireless connectivity within and the home and its surroundings. When combined with power-line

communications this enables a home backbone that meets the ldquowithout new wiresrdquo vision. A technology-independent

MAC layer will control this network and provide services as well as connectivity to any number of devices the user wishes to

connect to it in any room in a house/apartment, and further, this MAC layer will allow the service to follow the user from device

to device. In order to make this vision come true, substantial progress is required in the fields of optical-wireless physical layers,

in protocol design, and in system architecture..

C20. G. Ntogari, T. Kamalakis and T. Sphicopoulos, “Performance Analysis of Non-Directed

Equalized Indoor Optical Wireless Systems”, CSNDSP08 Graz, Austria (2008).

Indoor optical wireless systems provide an attractive alternative for realizing next generation wireless local area networks

(WLANs). In this paper, the potential of non-directed, equalized optical wireless systems is investigated, taking into account the

indoor channel impulse response and the characteristics of ambient light noise and thermal noise at the receiver. Two modulation

schemes, pulse-position-modulation and on-off keying, are combined with appropriate equalization methods in order to examine

the capacity limits of non-directed infrared wireless systems. It is shown that the various non-directed configurations can provide

data rates of the order of 100 Mb/s and beyond, over a medium sized room.

Citations:

R322. Dimitrov, S.; Mesleh, R.; Haas, H.; Cappitelli, M.; Olbert, M.; Bassow, E.; , "On the SIR of a cellular infrared optical wireless system for an aircraft,"

Selected Areas in Communications, IEEE Journal on , vol.27, no.9, pp.1623-1638, December 2009


Page 44 / 48

C21. A. Bogris, T. Kamalakis, D. Syvridis, T. Sphicopoulos, “Transformation of nonlinear phase noise

statistics in a phase-sensitive amplifier”, Winter Topical Meeting Series, 2008 IEEE/LEOS (2008).

The nonlinear phase noise statistics of a phase modulated signal coming through a phase-sensitive amplifier are semi-analytically

analyzed.

C22. A. Theocharidis, T. Kamalakis, T. Sphicopoulos “Perturbation analysis in photonic crystal

waveguides disorders”, ICTON Mediterranean Winter Conference, 2007. ICTON-MW (2007).

In this paper, the accuracy of Coupled Mode Theory (CMT) and Mode Matching (MM) method in estimating the scattering due

to geometric perturbations in photonic crystal waveguides is examined. Two CMT formulations are considered: The

instantaneous virtual grating (IVG) and the conventional CMT. The two CMT formulations and the MM method are compared

against the Finite Difference Frequency Domain (FDFD) combined with the Adjoint Variable (AV) method. The results obtained

with the AV/FDFD and MM methods agree very well, proving the validity of the latter for the sensitivity analysis of photonic

crystal waveguide structures. It is also deduced that although both CMT formulations lead to almost identical results, they can

provide only a first approximation to the perturbation-induced scattering.

C23. T. Kamalakis, I. Neokosmidis, A. Theocharidis, , T. Sphicopoulos “Soliton propagation in coupled

resonator optical waveguides: Application to optical delay lines”, ICTON Mediterranean Winter

Conference, 2007. ICTON-MW (2007).

In this paper, the feasibility of realizing optical delay lines based on soliton propagation in Coupled Resonator Optical

Waveguides (CROWs) is numerically analyzed. For a given bit rate and required delay, design equations are given that relate

the soliton peak amplitude and collision period to the soliton width. The stability of CROW solitons, in the presence of higher

order dispersion, optical loss and adjacent soliton pulses is numerically verified. It is also shown that soliton-based CROW delay

lines can achieve ns delay at a propagation length of a few mm, due to the high slow down factors that can be obtained. This

could open up a path towards realizing compact optical delay lines in integrated form.

C24. T. Rokkas, T. Kamalakis, D. Katsianis, D. Varoutas and T. Sphicopoulos. “Business Prospects of

Wide Scale Deployments of Free Space Optical Technology as a Last Mile Solution: A Techno-

economic Analysis” to be presented at the 18th IEEE International Symposium on Personal, Indoor

Mobile Radio Communications in Athens (September 2007).

In this paper, a techno-economic evaluation of the business prospects of a wide scale deployment of Free Space Optical (FSO)

technology as a last mile solution is carried out. The evaluation is based on the TONIC tool which takes into account network

topology, area characteristics, service demand and price evolution forecasting and calculates key economic figures-of-merits. It is

shown that FSO technology could provide a viable alternative in situations where the duct availability is limited and Fiber-to-

the-Home/Office or Fiber- to-the-Cabinet scenarios have negative or less favorable business prospects.

C25. T. Kamalakis, I. Neokosmidis, A. Tsipouras, T. Sphicopoulos, S. Pantazis, I.

Andrikopoulos, “Hybrid Free Space Optical / Millimeter Wave Outdoor Links For Broadband Wireless

Access Networks” to be presented at the 18th IEEE International Symposium on Personal, Indoor

Mobile Radio Communications in Athens (September 2007).

As the backbone and the metropolitan area network technologies can increasingly provide unprecedented bandwidth capacities,

the focus is being gradually shifted toward broadband access technologies capable of connecting the customer premises to the local

exchange. This paper reviews the prospects of state-of-the art Free Space Optical (FSO) technology, as a last mile solution,

combined with Millimeter Wave (MMW) systems aiming at increasing both the link range and service availability while

providing reliable broadband connections at distances above 1 Km. An overview of the hybrid FSO/MMW system that has been

deployed in Athens, Greece, is provided and a brief introduction to the trials that are to be conducted is given.

Citations:

R323. B. S. Kim, K. S. Kim, M. S. Kang, W. J. Byun and M. S. Song, “Multi-Gbps Wireless Transmission Technology Trends in the E-band,” ET Trends

(ISSN 1225-6455), Electronic and Telecommunications Research Institute, Vol. 25, No. 2, p.p. 57-67, April 2010

R324. J. Liao, J. Zeng, Sh. Deng, A. O. Boryssenko, V. M. Joyner and Z. Rena Huang, “Packaging of Dual-Mode Wireless Communication Module Using

RF/Optoelectronic Devices With Shared Functional Components,” IEEE Transactions on Advanced Packaging, Vol. PP, Issue: 99, 2010

R325. N. Ahmed, M. I. Anis, Farhan, “System level designing of FSO link through LED and NRZ modulation scheme by using different filters,”

Mediterranean Microwave Symposium (MMS), pp. 1 – 4, 2009

R326. Nadeem, F.; Leitgeb, E.; Awan, M.S.; Kandus, G., “Forward prediction of FSO received signal for FSO/RF hybrid network” Satellite and Space

Communications, 2009. IWSSC 2009. International Workshop on, Volume , Issue , 9-11 Sept. 2009 Page(s):196 - 200

R327. Nick Letzepis, Khoa D. Nguyen, Albert Guill´en i F`abregas and William G. Cowley, “Outage Analysis of the Hybrid Free-Space Optical and Radio-

Frequency Channel,” IEEE Journal on Selected Areas in Communications, Vol. 27, No. 9, December 2009

R328. 1. F. Nadeem, M. Gebhart, E. Leitgeb, M. S. Awan, B. Geiger, M. Henkel, G. Kandus, “Performance Analysis of Throughput Efficient Switch-over

between FSO and mmW Links,” Journal of Communications Software and Systems, Vol. 5, No. 1, March 2009


Page 45 / 48

R329. Abd El–Naser A. Mohamed, Mohamed M. E. El-Halawany, Ahmed Nabih Zaki Rashed3 and Amina E. M. El-Nabawy, “Transmission Performance

Analysis of Digital Wire and Wireless Optical Links in Local and Wide Areas Optical Networks,” (IJCSIS) International Journal of Computer Science

and Information Security, Vol. 3, No. 1, 2009

R330. Nadeem, F., Gebhart, M., Leitgeb, E., Kogler, W., Saleem Awan, M., Saeed Khan, M. and Kandus, G., “Simulations and analysis of bandwidth

efficient switch-over between FSO and mmW links,” SoftCom 2008: 16th International Conference on Software, Telecommuncations and Computer

Networks, art. no. 4669510, pp. 356-361.

C26. T. Rokkas, T. Kamalakis, D. Katsianis, D. Varoutas and T. Sphicopoulos. “Free Space Optical

Technology as an alternative Last-Mile Solution: A Techno-Economic Analysis” to be presented at the

6th Conference on Telecommunications Techno-Economics (Helsinki Finland 2007).

In this paper, a techno-economic evaluation of the business prospects of Free Space Optical (KSO) technology as an alternative

last mile solution is carried out and compared to Fiber-to-the-Home/Office (FTTH) and Fiber-to-the-Cabinet (FFTC). The

analysis is based on the results from the TONIC tool which takes into account network topology, area characteristics, service

demand and price evolution forecasting and calculates key economic figures-of-merits. The results reveal that FSO technology

could provide a viable alternative in cases where the existing duct availability is limited and scenarios with either FTTH or FFTC

have negative or less favourable business prospects.

C27.D. Varoutas, T. Kamalakis, D. Katsianis, T. Sphicopoulos and T. Monath, “Importance of the

Maturity of Photonic Component Industry on the Business Prospects of Optical Access Networks: A

Techno-economic Analysis” to be presented at the IFIP Networking Conference (Atlanta, 2007).

This paper discusses the influence of the maturity of the photonic component industry (PCI) in the business prospects of optical

access network deployments. Using the TONIC techno-economic tool, the business prospects of such deployments (in terms of

traditional investment indexes such as the Net Present Value – NPV or Internal Rate of Return – IRR) are related to the several

factors which characterize the maturity of the PCI such as production volumes and component cost evolution. The analysis

shows that even if the cost of Fiber-to-the-Home/Office (FTTH/O) and Fiber-to-the-Curb scenarios are mainly influenced by fiber

installation costs, the price reduction rate of photonic components may also affect the investment strategies. To speed up the cost

reductions, telecom carriers should therefore invest on optical technology research and development.

C28. N. Avaritsiotis, T. Kamalakis and T. Sphicopoulos “A Semi-analytical Model for Estimation of

the Transfer Function of a Coupled Resonator Optical Waveguide Based on Coupled Mode Theory”, to

be presented at the European Conference on Integrated Optics (Copenhagen 2007).

Coupled Resonator Optical Waveguides (CROWs) are receiving increased attention for the realization of future nanophotonic

waveguiding devices. In this paper a detailed analysis is provided in order to study the frequency response of finite CROWs

including the input/output waveguide-cavity coupling. A semi-analytical model is obtained based on the application of

reciprocity relations on Maxwell’s equations and can also include the coupling between non adjacent cavities and handle

CROWs of arbitrary long length. The model is verified by comparing its results to the Finite Difference Time Domain (FDTD)

method.

C29. T. Kamalakis, T. Sphicopoulos and A. Theoharidis, “A Semi-Analytical Propagation Equation

Model for the Study of Signal Propagation in Kerr Nonlinear Nano-photonic Waveguides” to be

presented at the European Conference on Integrated Optics (Copenhagen 2007).

A nonlinear propagation equation model is derived in the case of periodic nanophotonic waveguides using reciprocity relations.

The frequency dependence of the Self Phase Modulation (SPM) coefficient is analyzed and higher order nonlinear terms are

calculated in the middle and the edge of the guided band.

C30. D. Varoutas, T. Kamalakis, D. Katsianis, T. Sphicopoulos “Techno-Economic Evaluation of

Optical Access and Metropolitan Area Networks: The Influence of the Status of Maturity of the

Photonics Component Industry” presented at Optical Fiber Communications (OFC) Conference in

Anaheim, USA (2007).

Α techno-economic evaluation of the business aspects of optical networks in the access/metro optical networks is given and its

relation to the evolution of the photonic component industry is highlighted.

C31. I. Neokosmidis, A. Theocharidis, T. Kamalakis and T. Sphicopoulos, “Computation of the

Filtering Properties of Photonic Crystal

Waveguide Discontinuities Using the Mode Matching Method”, ICCT Enformatika Conference

(Vienna, Austria – 2006).

In this paper, the application of the Mode Matching (MM) method in the case of photonic crystal waveguide discontinuities is

presented. The structure under consideration is divided into a number of cells, which supports a number of guided and

evanescent modes. These modes can be calculated numerically by an alternative formulation of the plane wave expansion method


Page 46 / 48

for each frequency. A matrix equation is then formed relating the modal amplitudes at the beginning and at the end of the

structure. The theory is highly efficient and accurate and can be applied to study the transmission sensitivity of photonic crystal

devices due to fabrication tolerances. The accuracy of the MM method is compared to the Finite Difference Frequency Domain

(FDFD) and the Adjoint Variable Method (AVM) and good agreement is observed.

C32. T. Kamalakis, I. Neokosmidis D. Varoutas and T. Sphicopoulos, “Demand and Price Evolution

Forecasting as Tools for Facilitating the RoadMapping Process of the Photonic Component Industry”,

ICCT Enformatika Conference (Vienna, Austria – 2006).

The photonic component industry is a highly innovative industry with a large value chain. In order to ensure the growth of the

industry much effort must be devoted to road mapping activities. In such activities demand and price evolution forecasting tools

can prove quite useful in order to help in the roadmap refinement and update process. This paper attempts to provide useful

guidelines in roadmapping of optical components and considers two models based on diffusion theory and the extended learning

curve for demand and price evolution forecasting

C33. I. Neokosmidis, N. Gkekas, T. Kamalakis and T. Sphicopoulos, “tatistical Evaluation of Nonlinear

Distortion Using the Multi-Canonical Monte Carlo Method and the Split Step Fourier Method”,

ICCT Enformatika Conference (Vienna, Austria – 2006).

In high powered dense wavelength division multiplexed (WDM) systems with low chromatic dispersion, four-wave mixing

(FWM) can prove to be a major source of noise. The MultiCanonical Monte Carlo Method (MCMC) and the Split Step Fourier

Method (SSFM) are combined to accurately evaluate the probability density function of the decision variable of a receiver, limited

by FWM. The combination of the two methods leads to more accurate results, and offers the possibility of adding other optical

noises such as the Amplified Spontaneous Emission (ASE) noise.

C34. I. Neokosmidis, T. Kamalakis, T. Sphicopoulos “Performance Estimation of Bursty Wavelength

Division Multiplexing Networks”, presented at CSNDSP (Patras – 2006).

The performance of Wavelength Division Multiplexing (WDM) optical networks can be severely degraded due to the existence of

signal dependent noises such as the Four-Wave Mixing and the in-band crosstalk noises. To assess the implication of such noises,

the bits are usually assumed to be in the mark and space state with equal probability. This approach however, does not take into

account the effect of traffic burstiness in packet switched networks. In this paper, the influence of traffic burstiness in the

performance of the network is numerically analyzed in the case of an IP over MPλS-based WDM network. The numerical

analysis is carried out using the Multi-Canonical Monte Carlo (MCMC) method. It is shown that the Gaussian approximation

does not yield accurate results. It is also deduced that the network performance is intimately related to the traffic load. The

channel traffic distribution also plays an important role in the performance of the network.

C35. T. Kamalakis, T. Sphicopoulos, S. Sheikh Muhammad, E. Leitgeb, “Estimation of Power

Scintillation Statistics in Free Space Optical Links Using the Multi-Canonical Monte Carlo Method”,

presented at CSNDSP (Patras – 2006).

Free Space Optical (FSO) systems may constitute a viable alternative for the realization of high-speed optical access networks.

However, the atmospheric channel can generally limit the performance of FSO links. Atmospheric turbulence can cause power

fading at the receiver and hence increase the optical signal-to-noise ratio. In this work, we use the Multi-Canonical Monte Carlo

(MCMC) sampling method to evaluate the Probability Density Function (PDF) of the power variations at the receiver. This

PDF can be used to accurately determine the statistics and the performance impact of power scintillations in an FSO link.

C36. T. Kamalakis, I. Neokosmidis, T. Sphicopoulos and D. Syvridis, “Accuracy of the Tight Binding

Approximation For The Description of the Photonic Crystal Coupled Cavities” presented at SPIE

Photonics West (2006).

Coupled optical cavities are constantly attracting increased attention in telecommunication applications. For an infinite chain of

optical cavities, also known as the coupled resonator optical waveguide (CROW), the tight binding approximation has been used

in order to evaluate its dispersion characteristics and the modal fields. In this paper, the accuracy of the tight binding formalism

is investigated for a finite chain of optical cavities of arbitrary length. This approximation allows the derivation of simple

analytical formulas for the resonant frequencies and the corresponding modal fields, which involve only the resonant frequency of

the isolated cavity and the coupling coefficients between two consecutive coupled cavities. The equations for the modal fields

involve an expansion in terms of displaced versions of the field distribution of the mode of the isolated cavity and simple

trigonometric functions. These analytical results are compared with the numerical results of the plane wave expansion method in

the case of a finite photonic crystal chain of coupled resonators and an excellent agreement is observed even if the cavities are

placed close together. The results clearly indicate the usefulness and accuracy of the tight binding formalism for the description of

coupled optical resonators.


Page 47 / 48

C37. I. Neokosmidis, T. Sphicopoulos and D. Syvridis, “Performance Comparison of Advanced Optical

Modulation Formats in Wavelength Division Multiplexing (WDM) Systems Employing G.655

Fibers” presented at SPIE Photonics West (2006).

Η ανακοίνωση αυτή αφορά την επιλογή του βέλτιστου σχήματος μετάδοσης σε μια ζεύξη που χρησιμοποιεί

πολλούς οπτικούς ενισχυτές, πολλά μήκη κύματος μετάδοσης και ίνα μετατοπισμένης αλλά μη μηδενικής

διασποράς. Διάφορα σχήματα διαμόρφωσης αποτιμώνται παρουσία μη γραμμικών φαινομένων εξαιτίας της

διάδοσης του σήματος στην οπτική ίνα. Στα συστήματα αυτά η Μίξη Τεσσάρων Κυμάτων (Four Wave Mixing) είναι

το κυρίαρχο φαινόμενο. Αποδεικνύεται πως τα διάφορα σχήματα διαμόρφωσης φάσης μπορούν να αυξήσουν τη

μέγιστη ισχύ εκπομπής κατά 2dB ενώ τα σχήματα διαμόρφωσης πλάτους έχουν πάνω κάτω τις ίδιες επιδόσεις.

C38. I. Neokosmidis, T. Kamalakis and T. Sphicopoulos “Estimation of the Four-Wave Mixing

Distortion Statistics using the Multi-Canonical Monte Carlo Method” to be presented in the SPIE

International Congress on Optics and Optoelectronics 28 August - 2 September 2005,Warsaw,

Poland.

This paper studies the non-linear tolerance of several modulation formats in a four-span WDM system (8x10Gb/s) using low

chromatic dispersion fiber. The narrow spacing between the channels (50 GHz) makes FWM to be the most detrimental effect

experienced in each span made of G.655 fiber (80 km, D=2ps/nm.km) compensated by 0.8 km of DCF. A particular attention to

the Q factor computed in the simulations enables a fair comparison between IMDD (Intensity Modulated Direct Detection) and

phase modulated formats. It is shown that the various amplitude modulation alternatives result in more or less the same

performance. Phase modulation schemes drastically increase the system performance leading to an increase of the Q-factor by

almost 3dB.

C39. Y. Kopsinis, Y.; J.S. Thompson, B. Mulgrew, I. Neokosmidis, T. Kamalakis, T. Sphicopoulos,

“Electronic suppression of the four wave mixing-induced distortion in WDM optical communication

systems”, Optical Fibre Communications and Electronic Signal Processing (2005).

In this paper, an initial discussion is presented on the potential of applying electronic equalization in WDM optical

communication systems. The novelty of our work is that the fibre is considered nonlinear with FWM being the dominant source

of distortion. Possible dependencies between the outputs of the desired channel and the bits transmitted in other channels are

explored and some simple joint channel equalization structures are tested.

C40. T. Kamalakis, I. Neokosmidis and T. Sphicopoulos “Analysis of Photonic Crystal Coupler

Tolerance Using Coupled Mode Theory” to be presented in the SPIE International Congress on Optics

and Optoelectronics 28 August - 2 September 2005,Warsaw, Poland.

Coupled optical resonators are constantly attracting increased attention in telecommunication applications. For an infinite chain

of optical resonators, also known as the coupled resonator optical waveguide (CROW), the tight binding approximation has been

used in order to evaluate its dispersion characteristics and the modal fields. In this paper, the tight binding formalism is applied

in a finite chain of optical resonators for the first time. This allows the derivation of simple analytical formulas for the resonant


expansion method in the case of a finite 2D photonic crystal chain of coupled resonators and excellent agreement is observed.

C41. T. Kamalakis and T. Sphicopoulos “Application of the Tight Binding Formalism in the Analysis

of Finite Coupled Optical Resonator Chains”, 4th European Symposium on Photonic Crystals ESPC

2005, Barcelona, Spain.

Coupled optical resonators are constantly attracting increased attention in telecommunication applications. For an infinite chain

of optical resonators, also known as the coupled resonator optical waveguide (CROW), the tight binding approximation has been

used in order to evaluate its dispersion characteristics and the modal fields. In this paper, the tight binding formalism is applied

in a finite chain of optical resonators for the first time. This allows the derivation of simple analytical formulas for the resonant


expansion method in the case of a finite 2D photonic crystal chain of coupled resonators and excellent agreement is observed.

C42. M. Mamalis, D. Varoutas, A. Chipouras & T. Kamalakis “Simple Design of Photonic Crystal

MMI Couplers”, WSEAS Transactions on Communications, Issue 2, vol 2, pp. 334, July 2003.

Photonic crystals are used to implement a novel multimode interference coupler that functions as a basic 1x2 power splitter

achieving an excellent 3dB performance. The proposed device exhibits ultrasmall dimensions compared to corresponding classical

MMI and waveguide based devices. The paper introduces a simple and effective design method based on the pattern of the

distributed EM energy of a multimode photonic crystal waveguide.


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C43.J. Neokosmidis, T. Kamalakis, A. Chipouras and D. Varoutas “Evaluation of the Proabability

Density Function of the Four Wave Mixing Noise”, WSEAS Transactions on Communications, Issue

2, Vol. 2, pp. 346, July 2003.

The performance of a wavelength division multiplexed network is degraded by non-linear phenomena and especially by Four-

Wave Mixing (FWM). In this paper, the probability density function (pdf), of the FWM noise, both in the mark and space state

is investigated using numerical Monte Carlo (MC) simulations. The results are also compared to previous studies. It is shown

that the pdf of the FWM in the mark state is asymmetric.

C44. Thomas Kamalakis, Thomas Sphicopoulos and Dimitris Syvridis, “Design of an Arrayed

Waveguide Grating with flat spectral response” SPIE Optoelectronics 2002, Integrated Optoelectronic

Devices, San Jose.

Arrayed Waveguide Gratings (AWGs) are key components in current and future optical network realizations. In order to

prevent the need of accurate wavelength control the transfer function of the AWG should ideally have a rectangular shape.

Several techniques have been proposed in order to flatten the Gaussian-like transfer function of the conventional AWG. In this

paper we propose a new technique is based on the modification of the arrayed waveguide lengths and their positions on the Free

Propagation Regions. The above technique is similar to the deterministic tapering technique used in the design of antenna

arrays, since the spatial transfer function of the latter has the same characteristics as the spectral transfer function of an AWG.

Therefore, problem is reduced to that of matching the integral of a sinc function with a discrete step function and the optimal

waveguide lengths are obtained by solving a set of equations numerically. The performance of this technique (in terms of transfer

function flatness, sidelobe level and insertion losses compared to a conventional AWG) depends on the values given to several

initial design parameters related to the AWG geometry. The results obtained show that it is feasible to fabricate AWGs with

rectangular transfer function with proper adjustment of certain structural parameters.

Documents

Curriculum Vitae Description of Publicationsgalaxy.hua.gr/~thkam/CV_english_online.pdf · CV and Description of Publications: Dr. Thomas Kamalakis Page 5 / 48 2009-2012 Undergraduate