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Circuitos Fotnicos Integrados
Portas Lgicas
Vitaly F. Rodrguez-Esquerre
Departmento de Engenharia Eltrica
Programa de Ps-Graduao em Engenharia Eltrica
Universidade Federal de Bahia, Salvador, Brasil
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Motivao
Fig. 1. IP Traffic Bandwitdh (2006-2015)
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Alternativas
Aumentar a capacidade das fibras instaladas
-Tcnicas de modulao-Deteo coerente-Novos equipamentos
Instalao de novas fibras
-Fibras com mltiplos ncleos
Processamento Totalmente ptico (limitao doscircuitos baseados em semicondutores)-Novos conceitos de guiamento-Portas lgicas pticas-Propriedades no-lineares-Assimetrias nas geometrias
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Circuito Fotnico Integrado
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Vantagens da Fotnica
-Increase in the speed of computation.-Immune to electromagnetic interference.-Free from electrical short circuits.-Have low-loss transmission and large bandwidth.-Speed of light in photonic circuits will be close to speed of light in vacuum-Capable of communicating several channels in parallel without
interference.-Possesses superior storage density and accessibility-No power loss due to excess of heating.-Life of the hardware of optical computer is more
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Periodic Electromagnetic Media
1887 1987
with photonic band gaps: optical insulators
2-D
periodic intwo directions
3-D
periodic inthree directions
1-D
periodic inone direction
Cristais Fotnicos
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Planewave
k
for most l, beam(s) propagate through crystal withoutscattering (scattering cancels coherently)
...but for some l(~ 2a), no light can propagate: a photonic band gap
a
Cristais Fotnicos
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Periodic Electromagnetic Media
with photonic band gaps: optical insulators
3D Pho to nic C rysta l with De fe c tscan trap light in cavities and waveguides(wires)
Cristais Fotnicos
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1D
2D
3D
Cristais Fotnicos
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Deep-etchedMacroporous silicon
2D with vertical
confinement:
High vertical refractive
index contrast,
e.g. membranes
or low vertical refractiveindex contrast
e.g. GaAs or InP.
Purely 2D:
a = 1.5 m
h = 100 m
Cristais Fotnicos
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Cristais Fotnicos
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Question :How can we understand Photonic Crystals?
Answer :Every Macroscopic Electromagnetic Phenomenoncan be understand by the Maxwell's Equations.
kxe kytransversal propagation constant
Cristais Fotnicos
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Periodical Structures
Square
lattice
Triangular
Lattice
Brillouin irreductible
zone
Bloch-Floquet theorem
Cristais Fotnicos
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Periodical Structures
Square
lattice
Brillouin
irreductible
zone
Cristais Fotnicos
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Periodical Structures
Triangular
Lattice
Brillouin
irreductible
zone
Cristais Fotnicos
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Porta Lgica AND
Y.-P. Yangetal./OpticsCommunications297(2013)165168
Fig. 1. Proposed photonic crystal logic AND gate
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Porta Lgica AND
Y.-P. Yangetal./OpticsCommunications297(2013)165168
Fig. 5. Field evolutions of thedevice for (a) input(0,1), (b) input(1,0), and (c) input(1,1).
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Porta Lgica AND
Y.-P. Yangetal./OpticsCommunications297(2013)165168
Fig. 5. Field evolutions of the device for (a) input(0,1), (b) input(1,0), and (c) input(1,1).
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Porta Lgica AND
P. Rani et al. / Optics Communications 298299 (2013) 227
231
Fig. 1. Schematic of all-optical AND logic gate.
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Porta Lgica AND
P. Rani et al. / Optics Communications 298299 (2013) 227
231
Fig. 7. Field distributions at steady state of the ANDlogicgate for(a) A=1, B=0; (b) A=0, B=1 and (c) A=1, B=1.
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Porta Lgica AND
P. Rani et al. / Optics Communications 298299 (2013) 227
231
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Puertas Lgicas XOR, XNOR, AND, OR
Fig. 7. Structure of logic model with XOR, XNOR, NAND and OR functions
W. Liu et al./Optics&LaserTechnology50(2013)5564
6.9 m6.7 m
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Puertas Lgicas XOR, XNOR, AND, OR
W. Liu et al./Optics&LaserTechnology50(2013)5564
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Portas Lgicas XOR, XNOR, AND, OR
Fig. 13. (a), (b),(c)and(d)areschemasoflogicgatewithXOR,XNOR,NANDand ORlogicalfunctionsfordifferentBPSKsignals,respectively.
W. Liu et al./Optics&LaserTechnology50(2013)5564
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Portas Lgicas XOR, XNOR, AND, OR
W. Liu et al./Optics&LaserTechnology50(2013)5564
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Portas Lgicas XOR, XNOR, AND, OR
Fig. 14. Field distributions to show the performance of the proposed all-optical logic gate with XOR, XNOR, NAND and ORfunctions for different BPSK signals, respectively.
W. Liu et al./Optics&LaserTechnology50(2013)5564
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Portas Lgicas XOR, XNOR, AND, OR
Fig. 17. Field distributions of the logic model with XOR function (a)(e) at =1550 nm
W. Liu et al./Optics&LaserTechnology50(2013)5564
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Portas Lgicas em Silcio
Fig. 1. Schematic structure of a two-dimensional silicon photonic crystal.
Y. Fu et al. / Physics Letters A 377 (2013) 329333
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Portas Lgicas em Silcio
Fig. 2. Calculated steady state electric field distributions of all-optical OR gate. (a) Single signal light beam injected into
input port A. (b) Single signal light beam injected
into input port B. (c) Two single beams injected into input ports A and B, separately but simultaneously
Y. Fu et al. / Physics Letters A 377 (2013) 329333
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Portas Lgicas em Silcio
Fig. 4. Calculated steady state electric field distributions of the NOT gate. (a) No signal light injected into input port A. (b)
Single signal light beam injected into input port A.
Y. Fu et al. / Physics Letters A 377 (2013) 329333
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Portas Lgicas em Guias Convencionais
Yuhei Ishizaka et al, JOURNAL OF LIGHTWAVE TECHNOLOGY,
VOL. 29, NO. 18, SEPTEMBER 15, 2011
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Infraestrutura
02 salas climatizadas (Lab 17 e 18, 4 andar DEE)
Algoritmos de simulao de propagao de ondas em 2D em ELEMENTOS FINITOS nodomnio da frequncia e do tempo.
03 PCs I78 Gb RAM
03 PCs I748 Gb RAM
01 PC I764 Gb RAM
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Alunos de Ps-Graduao
Ana Jlia (Doutorado)Docente UnivasfPROPAGAO EM GUIAS EDISPOSITIVOS FOTNICOS NOCONVENCIONAIS
Anderson (Doutorado)
Bolsista FAPESBOTIMIZAO DE DISPOSITIVOS FOTNICOSE DE MICROONDAS UTILIZANDOCOMPUTAO BIO-INSPIRADA
Juarez (Doutorado)
Docente IFBAMODELAGEM DE GUIASPLASMNICOS
Joaquim (Doutorado)Bolsista FAPESB
NANOREFLETORES ENANOABSORVEDORES
Francismari (Mestrado)
Docente IFBAOTIMIZAO DE DISPOSITIVOSFOTONICOS USANDO COMPUTAOEVOLUTIVA
Bernardo (Mestrado)ATERMALIZAO DE DISPOSITIVOS
FOTNICOS
Davi (Mestrado)Docente IFBA eBolsista CAPESDIODOS E PORTAS LGICAS
Igor (Mestrado)Bolsista FAPESBGRADES DIELTRICASSUBMICROMTRICAS
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Alunos de Graduao
Luana da Frana Vieira
Computao Bio-inspirada na Otimizao de Dispositivos Fotnicos
Rafael Rodrigues dos Santos Andrade
Tcnicas Hibridas na Otimizao de Dispositivos Fotnicos
Igor Maia Teles Ruffini
Modelagem e Projeto de Dispositivos Fotnicos Usando Redes Neurais
Gabriel Santa Barbara da Silva E SilvaEstudo de absorvedores baseados em Dispositivos Metamateriais
Scarlatt Vicente Freitas
Reflexo em Grades Peridicas de Subcomprimento de Onda
Joo Paulo de Azeredo Amaro
Efeitos Trmicos em Dispositivos Fotnicos
Patricia Martinez Kalil Nunez Teixeira
Aperfeioamento de Recursos Didticos Hipermdicos com Mathematica - EletromagnetismoAplicado
Priscila Oliveira de JesusDesenvolvimento de Recursos Didticos Hipermdicos com Mathematica - Fundamentos de Fotnica
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Agradecimentos