Title :
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
fDate :
3/1/1990 12:00:00 AM
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;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900204
