DocumentCode
1310397
Title
Linewidth of an externally modulated laser subjected to Rayleigh backscattering from a fiber
Author
Berglind, Eilert
Author_Institution
Dept. of Microwave Technol., R. Inst. of Technol., Stockholm, Sweden
Volume
2
Issue
4
fYear
1990
fDate
4/1/1990 12:00:00 AM
Firstpage
239
Lastpage
241
Abstract
It is found that the linewidth of a semiconductor laser that is externally phase modulated and connected to a fiber with Rayleigh backscattering is broadened. At low modulation rates the linewidth can be several orders of magnitude greater than the free-running linewidth, but it converges to the free-running linewidth at sufficiently high modulation rates. As a result, the isolation needed to attain a specific linewidth can be calculated.<>
Keywords
Rayleigh scattering; fibre optics; optical modulation; phase modulation; semiconductor junction lasers; spectral line breadth; Rayleigh backscattering; externally modulated laser; externally phase modulated; fiber; fibre Rayleigh backscattering; free-running linewidth; high modulation rates; laser linewidth; linewidth broadening; low modulation rates; semiconductor laser; Backscatter; Fiber lasers; Fluctuations; Frequency; Laser modes; Laser noise; Laser theory; Optical reflection; Phase modulation; Semiconductor lasers;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/68.53248
Filename
53248
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