Title :
Observation of crosstalk due to four-wave mixing in a laser amplifier for FDM transmission
Author_Institution :
NTT Laboratories, Yokosuka, Japan
Abstract :
Crosstalk due to four-wave mixing in a semiconductor laser amplifier for optical FDM (frequency-division multiplexing) transmission is reported. Even when a laser amplifier is used in constant-power modulated FDM transmission, four-wave mixing in the amplifier causes channel crosstalk. In an experiment on three-channel amplification, where signals are frequency-modulated, a crosstalk of ¿ 30 dB is measured. This crosstalk is strongly dependent on channel separation and optical power
Keywords :
crosstalk; frequency division multiplexing; nonlinear optics; optical communication; semiconductor junction lasers; FDM transmission; channel separation; crosstalk; four-wave mixing; frequency-division multiplexing; laser amplifier; nonlinear optics; optical communication; optical power; semiconductor laser; three-channel amplification;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870895
