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Grating-based 40-Gbit/s optical code-division multiplexing system incorporating a nonlinear amplifying loop mirror

Grating-based 40-Gbit/s optical code-division multiplexing system incorporating a nonlinear... A seven-chip, 280-Gchip/s OCDM system incorporating quaternary phase coding and decoding is experimentally demonstrated. The encoder and decoder, consisting of superstructured fiber Bragg gratings, are fabricated using the equivalent-phase-shift method; only ordinary phase masks and submicrometer precision in control are required. Interchannel interference noise is also considered and evaluated; 40- Gbit / s ×2 -channel multiplexing is demonstrated. In addition, a nonlinear amplifying loop mirror (NALM) within the receiver is introduced to improve the system performance under two-channel operation. Switching is obtained for peak signal power less than 10 mW . We show that the NALM can act as a nonlinear processing element capable of reducing both the pedestal associated with conventional matched filtering and the width of the associated code recognition pulse. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Optical Engineering SPIE

Grating-based 40-Gbit/s optical code-division multiplexing system incorporating a nonlinear amplifying loop mirror

Optical Engineering , Volume 46 (1) – Jan 1, 2007

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References (14)

Publisher
SPIE
Copyright
Copyright © 2007 Society of Photo-Optical Instrumentation Engineers
ISSN
0091-3286
eISSN
1560-2303
DOI
10.1117/1.2424917
Publisher site
See Article on Publisher Site

Abstract

A seven-chip, 280-Gchip/s OCDM system incorporating quaternary phase coding and decoding is experimentally demonstrated. The encoder and decoder, consisting of superstructured fiber Bragg gratings, are fabricated using the equivalent-phase-shift method; only ordinary phase masks and submicrometer precision in control are required. Interchannel interference noise is also considered and evaluated; 40- Gbit / s ×2 -channel multiplexing is demonstrated. In addition, a nonlinear amplifying loop mirror (NALM) within the receiver is introduced to improve the system performance under two-channel operation. Switching is obtained for peak signal power less than 10 mW . We show that the NALM can act as a nonlinear processing element capable of reducing both the pedestal associated with conventional matched filtering and the width of the associated code recognition pulse.

Journal

Optical EngineeringSPIE

Published: Jan 1, 2007

Keywords: optical code-division multiplexing; superstructured fiber Bragg grating (SSFBG); all-optical encoding and decoding; equivalent phase shift; nonlinear amplifying loop mirror (NALM)

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