Title :
Simple analysis of external optical feedback in DFB semiconductor lasers
Author_Institution :
CNET Lannion B, Dept. MER/FOG, Lannion, France
Abstract :
The effect of weak external feedback on the threshold gain and resonant frequency of DFB semiconductor lasers is theoretically analysed. Simple formulas are derived which allow comparison of the sensitivity to optical feedback for DFB lasers and Fabry-Perot lasers.
Keywords :
distributed feedback lasers; feedback; semiconductor junction lasers; DFB semiconductor lasers; external optical feedback; resonant frequency; sensitivity; threshold gain; weak external feedback;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860189
