Coding to relax laser linewidth requirements for multichannel CPFSK coherent optical communications
Resource
Computers and Communications, 1995. Proceedings., IEEE Symposium on
Journal
Computers and Communications, 1995. Proceedings., IEEE Symposium on
Pages
-
Date Issued
1995-06
Date
1995-06
Author(s)
Wu, Jyh-Horng
Wu, Jingshown
Lee, Yang-Han
DOI
N/A
Abstract
A study of the multichannel coherent CPFSK communication system employing Reed-Solomon codes is reported. The crosstalk between adjacent channels, the impact of the laser phase noise, and selection of the optimum code rate are investigated. By applying a suitable coding scheme, the laser linewidth can be greatly relaxed, and the receiver sensitivity will be remarkably improved. A 100 Mbit/s system is used to verify the coding benefit. The results show that the impact of the laser linewidth can be largely alleviated by applying a (255, 223) Reed-Solomon code. When the linewidth is fixed (/spl Delta//spl nu/T=2%), this code can improve the receiver sensitivity by more than 15 dB.
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Type
journal article
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