Polarisation-insensitive optical coherent SCM system using mixed lightwave transmission of signal and local laser light

Author

Watanabe, S. ; Yokota, I. ; Naito, T. ; Chikama, T. ; Kuwahara, H. ; Touge, T.

Author_Institution

Fujitsu Labs. Ltd., Kawasaki, Japan

Volume

27

Issue

4

fYear

1991

Firstpage

361

Lastpage

362

Abstract

An optical coherent transmission and distribution system using subcarrier multiplexing (SCM) techniques is proposed in which the local LD is set in the transmitter and the signal and local light are mixed before transmission. The feasibility of the system was experimentally confirmed, using three-electrode DFB-LDs, with an optical FM by two-channel 560 Mbit/s ASK-SCM signal and heterodyne transmission through 25.7 km of single mode fibre. This system was insensitive to the state of polarisation in the transmission fibre. It was shown that more than 1000 subscribers could be served with Er³⁺-doped fibre amplifiers.

Keywords

distributed feedback lasers; fibre lasers; multiplexing equipment; optical links; optical modulation; semiconductor junction lasers; 25.7 km; 560 Mbit/s; Er³⁺-doped fibre amplifiers; heterodyne transmission; local laser light; mixed lightwave transmission; optical FM; optical coherent transmission; optical distribution; polarisation insensitive optical coherent SCM system; single mode fibre; subcarrier multiplexing; three-electrode DFB-LDs; two-channel ASK-SCM signal;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19910228

Filename

86759