1. University of California
Integrated Optical Wavelength Converters and Routers for Robust Wavelength-Agile Analog/ Digital Optical Networks
Daniel J. Blumenthal (PI), John E. Bowers, Larry A. Coldren, Nadir Dagli and Evelyn L. Hu
University of California
Santa Barbara, CA
Tel: (805) ;

2. Motivation: Dynamically Reconfigurable Analog Digital Networks
Analog Transceiver
Digital Transceiver
Dynamically reconfigure WDM DoD campus-like optical network environments
Support both digital and analog signals
32 lambdas with <ms reconfiguration time
2.5 Gbps digitally and 20GHz instantaneous RF BW
Chip-scale integration for scalability, reliability, space and power requirements. l5
OADM l1
OADM
l1 – l32
l1 – l32
Optical Crossconnect
OADM
OADM
l1 – l32 l5
OADM
OADM
l1 – l32
Digital Transceiver
Analog Transceiver

3. Application: Analog/Digital Wavelength Switch/Router
WDM Input
32 Wavelengths
32 Outputs
lin1
lt1
lout1
Agile Wavelength Converter 1
Wavelength
Router 1
lin2
lt2
lout2
Agile Wavelength Converter 2 2
DeMux 3
lin32
lt32
Agile Wavelength Converter 32
lout32 32
Digital (2.5 Gbps) OR
Analog (20 GHz BW)
Low BER
High SFDR
Digital (2.5 Gbps) OR
Analog (20 GHz BW)
Low BER
High SFDR

4. Application: Analog/Digital Wavelength Interchanger
WDM Input
32 Wavelengths
WDM Output
32 Wavelengths
lin1
lt1
Agile Wavelength Converter
lin2
lt2
Agile Wavelength Converter
Demultiplexer
Combiner
lin32
lt32
Agile Wavelength Converter
Digital (2.5 Gbps) OR
Analog (20 GHz BW)
Low BER
High SFDR
Digital (2.5 Gbps) OR
Analog (20 GHz BW)
Low BER
High SFDR

5. System Issues Network: Transmission With Input from V. Chan/MIT
Reconfiguration time less than 1ms because …
Insert picture of aircraft from CS-WDM CD.
Multicasting has advantages
Changing wavelengths in the middle of the network solves key routing issues (as opposed to at the source).
Scalability of network management (computing paths, passing information)
High utility of wavelength resources (less constrained routing)
For wide area or greater networks, allows fast reconfiguration through local routing
Allows hitless protection with rollover in smaller networks
Local vs. global restoration for loss-less transmission of critical defense data
Transmission
Noise figure, dynamic range, SFDR, transients, BER, output power
With Input from V. Chan/MIT