Error correcting coding of a 220 Mbit/s coherent optical communication channel

2 August 1990

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 26 (16) , 1288-1290
https://doi.org/10.1049/el:19900829

Abstract

Coherent optical communication systems that employ semiconductor lasers have exhibited degraded performance caused by laser phase noise. A rate 1/2, constraint length of seven, convolutional code with hard decision, Viterbi decoding has been applied to an experimental 220 Mbit/s optical FSK channel. Code testing has demonstrated the ability to improve system efficiency and significantly reduce the effect of laser linewidth on bit error rate performance, verifying prior theoretical work.

Keywords

CONVOLUTIONAL CODE
COHERENT OPTICAL COMMUNICATION CHANNEL
LASER PHASE NOISE
ERROR CORRECTING CODE
OPTICAL FSK CHANNEL
SEMICONDUCTOR LASERS
220 MBIT/S
DEGRADED PERFORMANCE
BIT ERROR RATE PERFORMANCE
VITERBI DECODING

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