DocumentCode
1228710
Title
Simple technique to improve the spectral quality of gain-switched pulses from a DFB laser
Author
Barry, Liam P. ; Debeau, J. ; Boittin, R.
Author_Institution
France Telecom, CNET, Lannion
Volume
30
Issue
25
fYear
1994
fDate
12/8/1994 12:00:00 AM
Firstpage
2143
Lastpage
2145
Abstract
The authors show that by coupling the output from a gain-switched DFB laser to a fibre loop mirror the spectral quality of the gain-switched pulse can be greatly improved. The SMSR of a gain-switched 1.5 μm DFB has been increased by 25 dB, and also the chirp has been reduced, by using this technique. This spectral improvement is vitally important in systems where the gain-switched pulses will pass an optical filter
Keywords
distributed feedback lasers; laser cavity resonators; laser mirrors; optical fibre couplers; optical filters; semiconductor lasers; 1.5 mum; DFB laser; chirp; fibre loop mirror; gain-switched pulse; gain-switched pulses; optical filter; spectral improvement; spectral quality;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19941462
Filename
350142
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