OFC’07 Summary

Lei Song Huan Song

OFC’07 Tracks Category 9: Networks

OMO, OCDMA OTuE, Network Architecture OWC, OPS/OBS OWK, Network Control and Management OWR, Cross-Layer Design OThF, Optical Packet Switching Networks OThJ, Optical Network Survivability OThQ, Carrier Services

OFC’07 Tracks (Contd.) Category 10: Emerging applications and access solutions

OMJ, Optical Network Applications OMR, Ultra-Short Reach Interconnects OTuG, Colorless ONU’s OWD, PON Modulation Schemes OWL, WDM PON OWS, Future PON Technology OThE, Service and Network Management OThM, Hybrid Optical Wireless

Network Architecture Code Title Author/Affiliate Topic Trends

OTuE1 Optical and the challenge of carrier network transformation

Gladish / T-system

Multi-service packet network

Efficient waveband provisioning

Role of ROADM

OTuE2 Blocking and waveband assignment in WDM networks with limited reconfigurability

Turkcu / George Washington Univ.

Benefits of ROADMs with tunable transponders

OTuE3 Delay sensitive smoothed round robin scheduler for light-trail and SLiT networks

Bafna / IIT, TTU RR provisioning over light-trail and SLiT networks

OTuE4 HOPI testbed Summerhill / Internet 2

Dynamic provisioning of layer 1 services and integration of layer 1-3

Network Architecture

Code Title Author/Affiliate Topic Trends

OTuE5 A protocol for efficient tunable laser utilization to support incremental upgrade in a WDM-PON

Song / UC Davis Better utilization of tunable lasers in WDM-PON

OTuE6 Improving access performance with an integrated PON and WiMAX with MIMO

Lin / NEC, SUNY Antenna allocation with MIMO to achieve high throughput and good resilience

OPS/OBS Code Title Author/Affiliate Topic Trends

OWC1 Burst-switched metro and access networks

Kazovsky / Stanford

OBS plays an important role in access networks

TCP / Ethernet over OPS

OBS for access/metro

OWC2 A fully functional application-aware optical burst switched network testbed

Zervas / Univ. of Essex, Univ. of Bristol (UK)

Application-oriented asynchronous OBS network model

OWC3 QoS differentiation in OBT ring networks with comparison to RPR networks

Das / Stanford, Fujitsu

Comparison of QoS differentiation in OBT with RPR standard

OWC4 Design and implementation of GMPLS-based optical slot switching access-distribution network using PLZT ultra-high speed optical switch

Hayashitani / Keio Univ., Nozomi

A scalable and high-switching- speed optical slot switching network

OPS/OBS Code Title Author/Affiliate Topic Trends

OWC5 All-optical multiple-label-processing based optical packet switching prototype and novel 10Gb Ethernet / 80 Gbps-wide colored optical packet converter with 8-channel array burst-mode packet transceiver

Furukawa / NIICT, Yokogawa, NTT, Univ. Roma, Osaka Univ.

IP packet / Ethernet transporting under OPS prototype

OWC6 TCP-aware load-balanced routing in optical burst- switched (OBS) networks

Komatireddy / Univ. of Massachusetts

TCP over OBS with load balancing

OWC7 On the upgrade of an optical code division PON with a code-sense Ethernet MAC protocol

Huiszoon / Eindhoven Univ. of Tech., Netherland

A novel optical code-sense multiple access / collision detection mechanism

Network Control and ManagementCode Title Author/Affiliate Topic Trends

OWK1 Techno-economics issues in future telecom networks

Lord / British Telecom

Long-reach access connects to core via switch

Emphasis on Ethernet over WDM

Efficient dynamic routing

OWK2 Advance reservation-based network resource manager with adaptive path discovery scheme for SOA-based networking

Hayashi / KDDI Delay-aware routing with optimized scheduling

OWK3 Feasibility of flow-based optical provisioning in GEANT

Ruffini / Univ. of Dublin, Ireland

Dynamic routing by analyzing local traffic info

Network Control and ManagementCode Title Author/Affiliate Topic Trends

OWK4 Carrier-grade Ethernet for core networks

Kirstaedter / Siemens

Functionality and standards for Ethernet-over-WDM networks

OWK5 Multiple path computation element (PCE) cooperation for multi-layer traffic engineering

Cugini / CNIT, SSSA (Italy)

Reduce info exchange in PCE for multi-layer networks

OWK6 Implementing a path computation element (PCE) to encompass physical impairments in transparent networks

Cugini / CNIT, SSSA (Italy)

PCE with physical impairment constraints

Cross-Layer DesignCode Title Author/Affiliate Topic Trends

OWR1 Impairment constraint based routing in mesh optical networks

Tomkos / GMAIT (Greece)

Impairment-aware routing with perf. monitoring and modeling

Routing to alleviate physical impairments

OWR2 Impairment-aware waveband switching in optical networks

Yen / Shih-Hsin Univ., ICRI, UC Davis

Impairment-aware traffic grooming

OWR3 Moving towards upgradeable all-optical networks through impairment-aware RWA algorithm

Zulkifli / Univ. of Essex (UK)

Impairment-aware routing for 10 Gb/s and 40 Gb/s demands

OWR4 Provisioning in ultra-long-haul optical networks

Rai / UC Davis, Fujitsu

Routing with impairment constraints and 3R consideration

Cross-Layer DesignCode Title Author/Affiliate Topic Trends

OWR5 QoS-aware RWA algorithms for path-protected DWDM networks

Zhai / George Washington Univ., Univ. of Virginia

RWA with path protection schemes

OWR6 Enabling ASON routing via novel signal quality metrics

Li / NICT, ARC (Australia)

Routing with physical consideration in ASON

OWR7 Scheduling and routing of sliding scheduled lightpath demands in WDM optical networks

Saradhi / Inst. Of Info. Res., NUS (Singapore)

Time conflict resolving scheme and two routing algorithms

Optical Packet Switching

Code Title Author/Affiliate Topic Trends

OThF2 Multi-stage SOA switch fabrics: 4X40Gb/s packet switching and fault tolerance

Aw / Univ. of Cambridge, Intel

Packet switching with multi-stage SOA

Demonstrations of various OPS routers/ switches

OThF3 Petabit-per-second routers: case for all-optical over electronic implementation

Yoo / UC Davis Pros and cons of all-optical routers

OThF4 Experimental demonstration of a label-switched and 50GHz channel spacing DWDM network with 50Gb/s DQPSK payload and 3.125Gb/s inversion-RZ OOK label

Yu / NEC, ATT GeorgiaTech

Inversion-RZ pulse signal employed in RZ-DQPSK payload / channel and 50GHz channel spacing

Optical Packet Switching

Code Title Author/Affiliate Topic Trends

OThF5 Low-cost, scalable optical packet switching networks with multi-wavelength labels

Seddighian / Laval Univ., Univ. of Toronto

Self-forwarding OPS network

OThF6 Experimental demonstration of an optical-label-switching router architecture supporting selective 3R regeneration

Zhu / UC Davis An optical-label-switching router with 3R regeneration ability

OThF7 Experimental demonstration of a complete SPINet optical packet switched interconnection network

Shacham / Columbia Univ.

4X4 photonic interconnection network

Optical Network SurvivabilityCode Title Author/Affiliate Topic Trends

OThJ1 Service Availability in optical network design

Jaeger / T-systems (Germany)

Survivability concepts in NG IP over optical networks

Emphasis on SLA guarantee

IP over optical networks

OThJ2 Meeting SLAs by design: a protection scheme with memory

Gerstel / Cisco, Univ. of Hawaii

SLA-guaranteed protection by tracing service outage

OThJ3 Impacts of multiple backups and multi-link sharing among primary and backups for dynamic service provisioning in survivable mesh networks

Song / UC Davis 1+N provisioning with link sharing among primary and backups

Optical Network SurvivabilityCode Title Author/Affiliate Topic Trends

OThJ4 Backup reprovisioning after shared risk link group (SRLG) failures in survivable WDM mesh networks

Shao / Inst. for Info. Res. (Singapore)

Backup reprovisioning after SRLG failures

OThJ5 Survivable differential delay aware multi-service over SONET/SDH networks with virtual concatenation

Huang / UC Davis, Intel

Differential-delay compensation routing

OThJ6 Novel redundancy design methodology for an optimal PON protection architecture

Kim / ICU, ETRI (Korea)

Redundancy-aware survivable PON

OThJ7 Towards a cryptanalysis of spectral-phase encoded optical CDMA

Goldberg / Princeton, Telcordia

Security analysis in OCDMA

Carrier ServicesCode Title Author/Affiliate Topic Trends

OThQ2 Multi-area MPLS/GMPLS interoperability trial over 14-verndor packet/TDM/ROADM/OXC network

Imajuku / NTT, etc

MPLS/GMPLS interoperability analysis

Dynamic higher bandwidth services

Traffic grooming

Emphasis on MPLS and inter-working

OThQ3 Dynamic traffic grooming of subwavelength connections with known duration

Tornatore / Politecnico, Blade, UC Davis

Traffiic grooming with holding-time awareness

OThQ4 Approaches to support various types of traffic in WDM networks

Liu / SUNY Provisioning and grooming to supprot various traffic types

OThQ5 Theoretical and experimental study of statistical decision method for link capacity adjustment in photonic IX

Yamamoto / NTT, etc

Link capacity adjustment method

OCDMACode Title Author/Affiliate Topic Trends

OMO1 Demonstration of 16-user OCDMA over 3-wavelength WDM using 511-chip, 640 Gchip/s SSFBG En/Decoder and single light source

Hamanaka / Osaka Univ.

An OCDMA system with < 640 GHz frequency interval

High-performance OCDMA system design

OMO2 Demonstration of a 16-channel code-reconfigurable OCDMA/DWDM system

Tian / Optoelectronics Res. Ctr., UK

An OCDMA system with 50 GHz channel spacing and error free performance

OMO3 Resiliency of OCDM-PON against near-far problem

Ohara / KDDI, UC Davis

Resiliency of OCDM-PON

OCDMACode Title Author/Affiliate Topic Trends

OMO4 Network performance evaluation of end-to-end application over SPECTS OCDMA testbed

Hu / UC Davis End-to-end applications over SPECTS OCDMA network

OMO5 Spectrally efficient DPSK-OCDMA coherent system using integrated ring-resonator-based coders

Agarwal / Telcordia

A multi-user spectral phase encoded OCDMA system

OMO6 Variable bit rate optical CDMA networks using multiple pulse position modulation

Arbab / USC A variable bit rate OCDMA system

OMO7 SPECTS O-CDMA 80.8-km BOSSNET field trial using a compact, fully integrated, AWG-based encoder/decoder

Hernandez / UC Davis, MIT

Encoding/decoding of SPECTS OCDMA signals

Conclusions

Trends Survivability in NG networks

SLA guaranteed service provisioning traffic grooming and “Bandwidth on-demand”

Cross-Layer design Impairment-aware routing techniques

Optical packet switching / optical burst switching OPS switches and routers TCP / Ethernet over OPS OBS for access and metro networks

Conclusions (Contd.)

Trends Optical network architectures

Waveband switching and efficient provisioning Role of ROADMs

Network control and management Ethernet over WDM

Carrier services MPLS and interworking

Service Provider Summit Attendees

Korea Telecom NTT Verizon Telcordia, etc

Trends Expand from core competency to neighboring field IP is a clear winner in triple-play Broadband home router (BHR) for service convergence PON evolution Security

WDM PONCode Title Author/Affiliate Topic Trends

OWL1 Recent research activities of WDM-PON in Korea

Soo Jin Park / KT

DWDM-PON;

Colorless R-SOA, FP-LD

Long-Reach;

Novel Amplifier;

Colorless;OWL2 A hybrid-amplified PON with 75-mn downstream bandwidth, 60 km reach, 1:64 split and multiple video services

Han Hyub Lee/ AT&T

Symmetric 2.488 Gpbs;

60 reach;

SOA-Raman hybrid amplifier

OWL3 A cost-effective WDM-PON config. employing innovative bi-directional amplification

Ming/Georgia Tech

Bidirectional amplifier;

100 km SSMF with 0.8 dB

OWL4 Experimental upstream demonstration of a long-reach wavelength-converting WDM-PON with DWDM backhaul

Darren P. Shea/ Univ. College London

38.8 Mbps/user;

1:64 split;

2.5 Gbps/channel

120km reach;

w/l conversion *

WDM PON (Contd.)

Code Title Author/Affiliate Topic Trends

OWL5 42dB loss budget hybrid WDM-CDM-PON without optical amplifier

Hideyuki/OKI Elec. Industry Co., Ltd.

62.5 Mbps/user;

1:32 split;

16 w/l;

100km reach

CDM*

OWL6 Optical VPN connecting ONUs in Different PONs

Yue/Shanghai Jiao Tong Univ.

Optical-layer VPN among ONUs**;

OWL7 Economic Evolution from EPON to WDM-overlaid PON employing a wavelength conversion node

Youngil Park/

Kookmin Univ.

Colorless ONU;

Wavelength conversion node

Hybrid Optical Wireless

Code Title Author/Affiliate Topic Trends

OThM1 Hybrid optical-wireless network

Sudhir/Nokia Motivation, industry viewpoints, key barriers & solutions

OThW2 A novel full-duplex wavelength-reuse optical-wireless arch. with directly modulated SOA as upstream colorless amplified modulator

Zhensheng/ Georgia tech

Optical phase modulator and interleaver for downstream;

Wavelength-reuse for upstream

OThW3 MARIN hybrid optical wireless access network

Wei/Stanford Hybrid network for metro, consisting of wireless mesh and reconfigurable optical backhaul

Hybrid Optical Wireless (Contd.)Code Title Author/Affiliate Topic Trends

OThM4 RADAR: Risk-and-delay aware routing algorithm in a hybrid wireless-optical broadband access networks (WOBAN)

Suman/UCD Minimize packet delay and reduce packet loss for multiple failures

OThM5 Demonstration of a novel WDM-PON access network compatible with ROF system to provide 2.5 Gb/s per channel symmetric data services

Jianjun/ NEC lab

Radio-on-fiber (ROF) with 2.5 Gbps symmetric data services

OThM6 1.92 Gb/s MB-OFDM ultra wide band radio transmission over low broadband multimode fiber

Anna/France Telecom

Using low bandwidth fiber to transmit 3*640 Mb/s UWB over 500 m

Hybrid Optical Wireless (Contd.)Code Title Author/Affiliate Topic Trends

OThM7 Simultaneous modulation and transmission of FTTH baseband and radio signals on a single wavelength

Chunting/Natl. Chiao-tung Univ.

Mixed signal transmission

Conclusions

Trends Colorless WDM-PON

Possible physical layer devices Injection locked FD-LD R-SOA ECL Wavelength converter

Long-Reach Access Novel amplifier

SOA-ROMAN Bidirectional EDFA

Hybrid Access Radio on Fiber (ROF)

OFC’07 Summary--- WDM-PONHuan Song

Group Discussion April 20, 2007

Recent Research Activities of WDM-PON in Korea

Recent Research Activities of WDM-PON in Korea

MDU (Multiple Dwelling Unit environment)remote node (ONU) is outdoor and powered

up to 24 user port at ONUSDU (Single Dwelling Unit environment)

wavelength is splitted

A hybrid-amplified PON with 75-mn downstream bandwidth, 60 km reach, 1:64 split and multiple video services

Fig. 7. Experimental setup of extended and service-upgraded PON using an extender box

Ultra broadband gain (up to 80-nm bandwidth)

SOA-Raman Hybrid Amplifier (SRHA)

A Cost-Effective WDM-PON Configuration EmployingInnovative Bi-directional Amplification

Fig. 8. Bi-directional Amplifier Fig. 9. System Architecture

After 100-km SSMF transmission, the power penaltyfor all channels at 10Gbit/s is less than 0.8 dB.

Experimental upstream demonstration of a long-reach wavelength-converting WDM-PON with DWDM backhaul

1. Optical transmitter with precise wavelength control needs thermal control.2. Increase cost of ONU.3. Un-cooled laser is cheap, but introduces wavelength drifting.

Fig. 10. System Architecture

Paper Author Reach Rate Split New Tech.

A hybrid-amplified PON with 75-mn downstream bandwidth, 60 km reach, 1:64 split and multiple video services

Han Hyub Lee/ AT&T

60 km Symmetric 2.488 Gpbs;

1:64 SOA-Raman hybrid amplifier

A cost-effective WDM-PON config. employing innovative bi-directional amplification

Ming/Georgia Tech

100 km Symmetric 10 Gpbs;

No Bidirectional amplifier;

SSMF with 0.8 dB

Experimental upstream demonstration of a long-reach wavelength-converting WDM-PON with DWDM backhaul

Darren P. Shea/ Univ. College London

120 km 2.5 Gbps/channel

38.8 Mbps/user;

1:64 w/l conversion *

42dB loss budget hybrid WDM-CDM-PON without optical amplifier

Hideyuki/OKI Elec. Industry Co., Ltd.

100 km 1:32 Code Division Multiplexing (CDM)

Optical VPN Connecting ONUs in Different PONs

VPN can only connects ONUs of the same color.

Fig. 11. VPN across different PONs

Economic Evolution from EPON to WDM-overlaid PON Employing a Wavelength Conversion Node

Fig. 12. System Architecture Fig. 13. Structure of RN

1. Uniform ONU, working on the same upstream wavelength.2. Smooth upgrade from EPON

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