Title :
Automatic frequency control for 636 Mbit/s SF-FSK coherent optical field trial
Author :
Hoffmann, B. ; Christensen, B. ; Bodtker, E. ; Jensen, N.G. ; Thomson, H.
Author_Institution :
Copenhagen Telephone Co., Denmark
Abstract :
An automatic frequency control circuit for a 636 Mbit/s SF-FSK coherent optical communication system has been implemented. The intermediate frequency is stabilised at 3.2 GHz+or-5 MHz, resulting in a system power penalty due to intermediate frequency drift of less than 0.1 dB at BER=10-11. The system features a fully automated cold start circuit.
Keywords :
automatic frequency control; frequency shift keying; frequency stability; optical communication equipment; oscillators; 3.2 GHz; 636 Mbit/s; SF-FSK coherent optical communication; automated cold start circuit; automatic frequency control circuit; frequency stabilisation; intermediate frequency; local oscillator control system; power penalty;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911223
