Title :
Design of asymmetric quarter-wave-shifted DFB semiconductor lasers
Author_Institution :
CNET, LAB/ROC/FOG, Lannion, France
Abstract :
Quarter-wave-shifted distributed-feedback (QWS-DFB) semiconductor lasers with asymmetric structure are theoretically analysed in terms of wavelength selectivity, differential efficiency, linewidth and sensitivity to external optical feedback. The analysis is used to design narrow-linewidth lasers with low sensitivity to optical feedback for coherent transmission.
Keywords :
distributed feedback lasers; feedback; semiconductor junction lasers; asymmetric quarter-wave-shifted DFB semiconductor lasers; coherent transmission; differential efficiency; external optical feedback; linewidth; narrow-linewidth lasers; optical feedback; wavelength selectivity;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860762
