Title :
Long-haul coherent optical fiber communication systems using optical amplifiers
Author :
Ryu, Shiro ; Yamamoto, Shu ; Taga, Hidenori ; Edagawa, Noboru ; Yoshida, Yoshihisa ; Wakabayashi, Hiroharu
Author_Institution :
KDD Res. & Dev. Labs., Saitama, Japan
fDate :
2/1/1991 12:00:00 AM
Abstract :
Studies on long-haul coherent optical fiber communication systems with in-line optical amplifier repeaters are made theoretically and experimentally. By theoretical calculation it was found that coherent systems can achieve wider dynamic range for an amplifier input power as compared with the intensity-modulation direct-detection (IM-DD) systems. The feasibility of such systems using traveling-wave semiconductor laser amplifiers (TWSLAs) and erbium-doped fiber amplifiers (EDFAs) was investigated, and 546 km, 140 Mb/s CPFSK transmission using TWSLAs and 1028-km, 560-Mb/s CPFSK transmission using EDFAs were successfully demonstrated
Keywords :
fibre lasers; light coherence; optical communication equipment; optical links; semiconductor junction lasers; 1028 km; 140 Mbit/s; 56 km; 560 Mbit/s; CPFSK transmission; Er:fibre amplifiers; amplifier input power; dynamic range; in-line optical amplifier repeaters; long-haul coherent optical fiber communication systems; optical amplifiers; traveling-wave semiconductor laser amplifiers; Dynamic range; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Optical amplifiers; Optical fiber amplifiers; Optical fiber communication; Power amplifiers; Repeaters; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
