Title :
546 km, 140 Mbit/s FSK coherent transmission experiment through 10 cascaded semiconductor laser amplifiers
Author :
Ryu, Sang-Burm ; Taga, Hidenori ; Yamamoto, Seiichi ; Mochizuki, K. ; Wakabayashi, H.
Author_Institution :
KDD Meguro R&D Labs., Tokyo, Japan
Abstract :
The effect of the spontaneous emission noise on coherent systems in a multistage semiconductor laser amplifier repeater system is experimentally examined. By appropriate adjustment of the input power level to each amplifier, 546 km FSK transmission of 140 Mbit/s using 10 cascaded amplifiers is demonstrated without power penalty.
Keywords :
frequency shift keying; optical communication equipment; repeaters; semiconductor junction lasers; 140 Mbit/s; 546 km; FSK; cascaded amplifiers; cascaded semiconductor laser amplifiers; coherent systems; coherent transmission experiment; multistage semiconductor laser amplifier repeater system; spontaneous emission noise; travelling wave laser amplifiers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19891125
