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Optical-CDMA in InP

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15 Author(s)
Broeke, R.G. ; Univ. of California, Davis ; Jin Cao ; Chen Ji ; Sang-Woo Seo
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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.

Published in:

Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:13 ,  Issue: 5 )

Date of Publication:

Sept.-oct. 2007

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