DocumentCode
1159276
Title
Suppression of external cavity modes in DFB lasers with a high endurance against optical feedback
Author
Kurosaki, Takeshi ; Hirono, Takuo ; Fukuda, Mitsuo
Author_Institution
NTT Opto-Electron. Labs., Kanagawa, Japan
Volume
6
Issue
8
fYear
1994
Firstpage
900
Lastpage
902
Abstract
This paper clarifies that the external cavity modes deform optical output response in the DFB lasers by enhancing the relaxation oscillation under NRZ modulation. It is shown that a DFB laser with an asymmetric structure in reflectivity of facets and in position of a /spl lambda//4 phase shift can suppress the influence of the external cavity modes.<>
Keywords
distributed feedback lasers; laser cavity resonators; laser modes; optical modulation; oscillations; reflectivity; semiconductor lasers; /spl lambda//4 phase shift; DFB lasers; NRZ modulation; asymmetric structure; external cavity modes; high endurance; optical feedback; optical output response; reflectivity; relaxation oscillation; Coherence; Fiber lasers; Laser feedback; Laser modes; Laser noise; Noise level; Optical feedback; Optical modulation; Optical noise; Power lasers;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/68.313046
Filename
313046
Link To Document