Impact of encoder-decoder wavelength mismatch on the performance of direct-sequence optical code-division multiple-access system

Meng Yan; Hongming Zhang; Minyu Yao

doi:10.1117/1.2802575

1 November 2007 Impact of encoder-decoder wavelength mismatch on the performance of direct-sequence optical code-division multiple-access system

Meng Yan, Hongming Zhang, Minyu Yao

Author Affiliations +

Optical Engineering, Vol. 46, Issue 11, 115007 (November 2007). https://doi.org/10.1117/1.2802575

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.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Meng Yan, Hongming Zhang, and Minyu Yao "Impact of encoder-decoder wavelength mismatch on the performance of direct-sequence optical code-division multiple-access system," Optical Engineering 46(11), 115007 (1 November 2007). https://doi.org/10.1117/1.2802575

Published: 1 November 2007

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KEYWORDS

Cadmium sulfide

Computer programming

Fiber Bragg gratings

Receivers

Picosecond phenomena

Temperature metrology

Error analysis

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