DocumentCode
769566
Title
The onset of coherence collapse in DFB lasers
Author
Woodward, S.L. ; Thompson, E.J.
Author_Institution
AT&T Bell Labs., Crawford Hill Lab., Holmdel, NJ, USA
Volume
4
Issue
3
fYear
1992
fDate
3/1/1992 12:00:00 AM
Firstpage
221
Lastpage
223
Abstract
How the onset of coherence collapse in distributed-feedback (DFB) lasers varies with the laser output power has been measured. Theory predicts that as a laser´s output power is increased, the amount of back-reflected light necessary to cause coherence collapse should also increase, yet two of the four lasers studied become dramatically more sensitive to back reflections at higher output powers. It is speculated that changes in the carrier density in these lasers cause this device-dependent behavior.<>
Keywords
carrier density; distributed feedback lasers; light coherence; light reflection; semiconductor junction lasers; sensitivity; DFB lasers; back-reflected light; carrier density; coherence collapse; collapse onset; device-dependent behavior; diode lasers; distributed-feedback; laser output power; sensitive; Laser beams; Laser modes; Laser theory; Optical attenuators; Optical interferometry; Optical reflection; Optical sensors; Power generation; Power lasers; Power measurement;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/68.122372
Filename
122372
Link To Document