Title :
Pump-noise induced FWM effect and its reduction in a distributed Raman fiber amplifier
Author :
Zhou, Xiang ; Birk, Martin ; Woodward, Sheryl
Author_Institution :
AT&T Labs Res., Middletown, NJ, USA
Abstract :
We report that pump-noise induced four-wave mixing effects can be serious for some nonzero dispersion-shifted fiber using distributed Raman amplification. Moreover, we find that such an effect strongly depends on the spectral structure of the pump, and can be suppressed by expanding the effective spectral width of the pump.
Keywords :
Raman lasers; distributed amplifiers; laser noise; multiwave mixing; optical fibre amplifiers; optical pumping; WDM systems; distributed Raman fiber amplifier; effective pump spectral width; four-wave-mixing; nonzero dispersion-shifted fiber; pump spectral structure; pump-noise induced FWM effect; Circulators; Dispersion; Distributed amplifiers; Four-wave mixing; Frequency; Optical fiber amplifiers; Optical noise; Optical pumping; Signal to noise ratio; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.804660
