Two-channel coherent optical FDM transmission system with a new frequency stabilisation scheme

Author

Jiang, Qimeng ; Wu, D.M. ; Xie, L.Z.

Author_Institution

Dept. of Radio & Electron., Peking Univ., Beijing, China

Volume

26

Issue

5

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

310

Lastpage

312

Abstract

A two-channel 140 Mbit/s coherent optical FDM transmission system with a new frequency stabilisation scheme has been developed. In this scheme, low frequency modulation is applied to transmitter laser diodes to lock them at the resonances of a Fabry-Perot interferometer, and a high speed IF AFC circuit is used to eliminate the system performance degradation due to this low frequency modulation. The measured BER is 10^-9 for a received signal power of -41 dBm and no crosstalk between channels is observed with a channel spacing of 4.0 GHz.

Keywords

digital communication systems; error statistics; frequency division multiplexing; frequency stability; optical fibres; optical links; 140 Mbit/s; BER; Fabry-Perot interferometer resonances; bit error rate; channel crosstalk; channel spacing; frequency stabilisation scheme; high speed IF AFC circuit; low frequency modulation; optical fibre links; signal power; system performance degradation elimination; transmitter laser diodes; two-channel coherent optical FDM transmission system;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19900204

Filename

82630