DocumentCode :
1011823
Title :
Mechanism for high singlemode stability of gain-coupled DFB lasers with periodically etched quantum wells
Author :
Makino, Tatsuya
Author_Institution :
Bell-Northern Res., Ottawa, Ont.
Volume :
31
Issue :
18
fYear :
1995
fDate :
8/31/1995 12:00:00 AM
Firstpage :
1579
Lastpage :
1581
Abstract :
The sidemode suppression ratio of gain-coupled DFB lasers with periodically etched quantum wells is analysed by a more accurate model for amplified spontaneous emission. It is shown that the periodic etching of quantum wells is very effective for providing a high side-mode suppression. The mechanism for the high singlemode stability is explained by the effective modal gain. which has an enhancement at the longer wavelength side of the Bragg stopband
Keywords :
distributed feedback lasers; etching; laser modes; laser stability; quantum well lasers; superradiance; Bragg stopband; amplified spontaneous emission; gain-coupled DFB lasers; modal gain; periodic etching; quantum wells; sidemode suppression ratio; singlemode stability;
fLanguage :
English
Journal_Title :
Electronics Letters
Publisher :
iet
ISSN :
0013-5194
Type :
jour
DOI :
10.1049/el:19951088
Filename :
469158
Link To Document :
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