Title :
Coherent optical transmission at 565 Mbit/s through five cascaded photonic amplifiers
Author :
Malyon, D.J. ; Steele, R.C. ; Creaner, M.J. ; Brain, M.C. ; Stallard, W.A.
Author_Institution :
British Telecom Res. Labs., Martlesham Heath, UK
fDate :
3/2/1989 12:00:00 AM
Abstract :
Results are presented for a 565 Mbit/s coherent DPSK system operating with a laser power amplifier and up to four cascaded laser amplifier repeaters. The importance of maintaining a good signal/spontaneous noise power ratio and low facet reflectivity amplifiers to reduce backward-travelling waves was demonstrated.
Keywords :
digital communication systems; error statistics; optical fibres; optical links; phase shift keying; repeaters; 565 Mbit/s; BER performance; backward travelling waves reduction; cascaded photonic amplifiers; coherent DPSK system; laser amplifier repeaters; laser power amplifier; low facet reflectivity amplifiers; optical fibre link; signal/spontaneous noise power ratio;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890246
