Title :
High sidemode suppression of partly gain-coupled distributed feedback lasers with periodically etched quantum wells
Author_Institution :
Nortel Technol., Ottawa, Ont., Canada
fDate :
9/26/1996 12:00:00 AM
Abstract :
A self-consistent calculation of the amplified spontaneous emission spectrum and the sidemode suppression ratio is presented, for the first time, for partly gain-coupled distributed feedback (DFB) lasers with periodically etched quantum wells (QWs). It is shown that the sidemode suppression increases with an increase in the number of etched QWs, due to the gain coupling which is a function of carrier density
Keywords :
distributed feedback lasers; laser modes; laser theory; quantum well lasers; superradiance; amplified spontaneous emission spectrum; carrier density; partly gain-coupled distributed feedback lasers; periodically etched quantum wells; self-consistent calculation; sidemode suppression ratio;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19961266
