Title :
Influence of nondegenerate four-wave mixing on coherent transmission system using in-line semiconductor laser amplifiers
Author :
Ryu, Shiro ; Mochizuki, Kiyofumi ; Wakabayashi, Hiroharu
Author_Institution :
KDD Meguro R&D Labs., Tokyo, Japan
fDate :
10/1/1989 12:00:00 AM
Abstract :
Three-channel coherent frequency-shift-keying (FSK) transmission experiments using in-line semiconductor laser amplifiers under the influence of nondegenerate four-wave mixing in laser amplifiers are discussed. The experiments show that the effect of four-wave mixing is reduced by applying modulation to the interfering carriers and enlarging the frequency separation of each carrier. However, transmission quality degradation becomes serious in multistage amplifier systems
Keywords :
frequency shift keying; laser beam applications; light coherence; optical communication equipment; optical modulation; semiconductor junction lasers; carrier frequency separation; coherent frequency-shift-keying; coherent transmission system; in-line semiconductor laser amplifiers; interfering carriers; multistage amplifier systems; nondegenerate four-wave mixing; optical modulation; three-channel transmission experiments; transmission quality degradation; Degradation; Four-wave mixing; Frequency shift keying; Nonlinear optics; Optical amplifiers; Optical mixing; Optical modulation; Semiconductor lasers; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
