Title :
Effect of a four-wave mixing on multichannel amplification in semiconductor laser amplifiers
Author :
Agrawal, Govind P. ; Habbab, Isam M I
Author_Institution :
Inst. of Opt., Rochester Univ., NY, USA
fDate :
3/1/1990 12:00:00 AM
Abstract :
A general theory is developed to describe multichannel amplification in semiconductor laser amplifiers. It includes the effects of both gain saturation and carrier-density modulation. The carrier-density modulation, occurring as a result of beating among the neighboring channels, is responsible for nondegenerate four-wave mixing. This nonlinear phenomenon not only unequalizes the channel gains but also generates new sidebands on both sides of the boundary channels. The effects of four-wave mixing on multichannel amplification are illustrated by considering the 30-channel case in detail. The theory is useful for quantifying the amplifier-induced crosstalk and identifying the operating conditions for reducing such crosstalk in multichannel coherent communication systems
Keywords :
carrier density; crosstalk; nonlinear optics; optical modulation; semiconductor junction lasers; 30-channel case; amplifier-induced crosstalk; beating; boundary channels; carrier-density modulation; channel gains; four-wave mixing; gain saturation; multichannel amplification; multichannel coherent communication systems; neighboring channels; nondegenerate four-wave mixing; semiconductor laser amplifiers; sidebands; Charge carrier density; Communication systems; Crosstalk; Fiber nonlinear optics; Four-wave mixing; Laser theory; Nonlinear optics; Optical amplifiers; Semiconductor lasers; Semiconductor optical amplifiers;
Journal_Title :
Quantum Electronics, IEEE Journal of
