DocumentCode
975463
Title
Simple formula giving spectrum-narrowing ratio of semiconductor-laser output obtained by optical feedback
Author
Kikuchi, K. ; Okoshi, T.
Author_Institution
University of Tokyo, Department of Electronic Engineering, Tokyo, Japan
Volume
18
Issue
1
fYear
1982
Firstpage
10
Lastpage
12
Abstract
The letter presents a theory of the spectrum-narrowing effect of semiconductor lasers by optical feedback. A simple formula for the 3 dB spectral width is derived as a function of the intensity and phase of the returning beam and the round-trip time of the feedback circuit. The spectrum-narrowing ratio of a GaAlAs laser with a small amount of optical feedback was measured as a function of the optical feedback power ratio. The derived formula and experiment show very good agreement.
Keywords
III-V semiconductors; aluminium compounds; feedback; gallium arsenide; laser theory; semiconductor junction lasers; 3 dB spectra width; GaAlAs laser; optical feedback; optical feedback power ratio; semiconductor-laser output; spectrum-narrowing ratio;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19820008
Filename
4246182
Link To Document