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Optical Engineering

Impact of encoder-decoder wavelength mismatch on the performance of direct-sequence optical code-division multiple-access system
Author(s): Meng Yan; Hongming Zhang; Minyu Yao
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Paper Abstract

The impact on the performance of the direct-sequence optical code-division multiple-access (DS-OCDMA) system due to wavelength mismatch between encoder and decoder is investigated. Simulation results show that the encoder-decoder wavelength mismatch will degrade the bit-error-rate performance of the DS-OCDMA system drastically by decreasing the contrast ratio of the correctly and incorrectly decoded signals and lower data rate systems are more vulnerable to wavelength mismatch than higher data rate systems. In practical DS-OCDMA systems, the wavelength mismatch between encoder and decoder should be minimized, and some protective measures, such as temperature stabilization and fiber Bragg grating (FBG) packaging, should be taken to enhance the immunity of the superstructured FBG encoder/decoder to ambient conditions.

Paper Details

Date Published: 1 November 2007
PDF: 5 pages
Opt. Eng. 46(11) 115007 doi: 10.1117/1.2802575
Published in: Optical Engineering Volume 46, Issue 11
Show Author Affiliations
Meng Yan, Tsinghua Univ. (China)
Hongming Zhang, Tsinghua Univ. (China)
Minyu Yao, Tsinghua Univ. (China)


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