DocumentCode
1026638
Title
Effect of linear gain saturation on small-signal dynamics of MQW DFB lasers
Author
Hong, J. ; Huang, W.P. ; Makino, T.
Author_Institution
Adv. Technol. Lab., Bell-Northern Res., Ottawa, Ont., Canada
Volume
5
Issue
12
fYear
1993
Firstpage
1373
Lastpage
1376
Abstract
The linear gain saturation effect is shown to be important in determining the dynamics of multiple-quantum-well (MQW) distributed-feedback (DFB) lasers. A more realistic logarithmic dependence of material gain on carrier density is assumed in a comprehensive MQW DFB laser model. It is found through simulation that because of the linear gain saturation, the interplay between modal gain and differential gain leads to an optimal kappa L for maximum small-signal modulation bandwidth in lambda /4-shifted MQW DFB lasers.<>
Keywords
carrier density; distributed feedback lasers; laser theory; optical modulation; optical saturation; semiconductor lasers; MQW DFB laser model; carrier density; differential gain; linear gain saturation; modal gain; multiple-quantum-well distributed-feedback lasers; simulation; small-signal dynamics; small-signal modulation bandwidth; Distributed feedback devices; Electrons; Frequency modulation; Gain; Laser feedback; Laser modes; Laser theory; Optical materials; Quantum well devices; Semiconductor lasers;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/68.262545
Filename
262545
Link To Document