Title :
Influence of nonlinear gain on DFB laser linewidth
Author :
Pan, Xing ; Olesen, Henning ; Tromborg, Bjarne
Author_Institution :
TFL Telecommun. Res. Lab., Horsholm, Denmark
fDate :
7/5/1990 12:00:00 AM
Abstract :
A linewidth theory for DFB lasers which includes the combined effect of spatial holeburning and nonlinear gain is presented. It is shown that the conventional form of nonlinear gain leads to a small reduction of the effective linewidth enhancement factor and cannot explain the linewidth floor or rebroadening observed for DFB lasers at high output power.
Keywords :
distributed feedback lasers; optical communication equipment; semiconductor junction lasers; DFB laser linewidth; high output power; linewidth enhancement factor; linewidth floor; linewidth rebroadening; linewidth theory; nonlinear gain; spatial holeburning;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900696
