Title :
Error correcting coding of a 220 Mbit/s coherent optical communication channel
Author :
Castagnozzi, D.M. ; Alexander, S.B. ; Colagiuri, E.P.
Author_Institution :
MIT, Lincoln Lab., Lexington, MA, USA
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 :
error correction codes; frequency shift keying; optical communication; 220 Mbit/s; Viterbi decoding; bit error rate performance; coherent optical communication channel; convolutional code; degraded performance; error correcting code; laser phase noise; optical FSK channel; semiconductor lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900829
