Title :
Long-haul high-speed optical communication systems using a semiconductor laser amplifier
Author :
Yamamoto, Shu ; Mochizuki, Kiyofumi ; Wakabayashi, Hiroharu ; Iwamoto, Yoshinao
Author_Institution :
Kokusai Denshin Denwa Co. Ltd., Tokyo, Japan
fDate :
10/1/1988 12:00:00 AM
Abstract :
High-speed long-haul systems using semiconductor laser amplifiers, which eliminate the need for high-speed electronics in repeaters and are transparent to the transmission speed are considered for application in undersea high-speed transmission systems. The potential of laser-amplifier-repeated transmission systems has been explored by transmission experiments, showing that a high-speed system above 2 Gb is possible by filtering out the spontaneous emission power of the laser amplifier. A theoretical estimation of SNR degradation due to noise accumulation of chained laser amplifiers shows that systems are possible, using 30 to 40 laser amplifier repeaters, if narrow-bandwidth optical filters are used
Keywords :
laser beam applications; optical communication equipment; optical links; semiconductor junction lasers; spatial filters; SNR degradation; filtering; high-speed electronics; long-haul high-speed systems; narrow-bandwidth optical filters; noise; optical communication systems; repeaters; semiconductor laser amplifier; spontaneous emission power; undersea high-speed transmission systems; High-speed electronics; Laser noise; Laser theory; Optical amplifiers; Optical fiber communication; Optical filters; Power lasers; Repeaters; Semiconductor lasers; Semiconductor optical amplifiers;
Journal_Title :
Lightwave Technology, Journal of
