Published September 2007 | Version Published
Journal Article Open

Optical-CDMA in InP

Abstract

This paper describes the InP platforms for photonic integration and the development on these platforms of an optical code division multiple access (O-CDMA) system for local area networks. We demonstrate three building blocks of this system: an optical pulse source, an encoder/decoder pair, and a threshold detector. The optical pulse source consists of an integrated colliding pulse-mode laser with nearly transform-limited 10 Gb/s pulses and optical injection locking to an external clock for synchronization. The encoder/decoder pair is based on arrayed waveguide gratings. Bit-error-rate measurements involving six users at 10 Gb/s showed error-free transmission, while O-CDMA codes were calibrated using frequency resolved optical gating. For threshold detection after the decoder, we compared two Mach--Zehnder interferometer (MZI)-based optical thresholding schemes and present results on a new type of electroabsorber-based MZI.

Additional Information

© 2007 IEEE. Reprinted with permission. Manuscript received December 18, 2006; revised June 15, 2007. [Posted online: 2007-10-15] This work was supported in part by DARPA and SPAWAR under Agreement N66001-01-1 and under Contract HR0011-04-1-0054.

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Identifiers

Eprint ID
9224
Resolver ID
CaltechAUTHORS:BROieeejstqe07

Funding

Office of Naval Research (ONR)
N66001-01-1-8966
Defense Advanced Research Projects Agency (DARPA)
HR0011-04-1-0054

Dates

Created
2007-11-27
Created from EPrint's datestamp field
Updated
2021-11-08
Created from EPrint's last_modified field

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Physics Department