Title :
Intermodulation distortion in optical amplifiers from carrier-density modulation
Author :
Darcie, Thomas ; Jopson, R.M. ; Tkach, R.W.
Author_Institution :
AT&T Bell Laboratories, Crawford Hill Laboratory, Holmdel, USA
Abstract :
We present a theoretical model describing the generation of intermodulation products (IMPs) in semiconductor optical amplifiers by signal-induced carrier-density modulation. The IMPs depend strongly on the linewidth-enhancement factor and the ratio of output intensity to the saturation intensity of the amplifier. Calculation of the total intermodulation penalty for multichannel amplifier applications is possible using the expressions presented.
Keywords :
amplifiers; carrier density; intermodulation; optical communication equipment; optical modulation; semiconductor junction lasers; carrier-density modulation; intermodulation products; linewidth-enhancement factor; multichannel amplifier applications; optical amplifiers; optical communication equipment; output intensity; saturation intensity; semiconductor lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19870961
