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 93106 Tel: (805) 893-4168; Email: danb@ece.ucsb.edu

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

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

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

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