Title :
Linewidth enhancement in distributed-feedback semiconductor lasers
Author_Institution :
Siemens AG, Munich, West Germany
fDate :
4/26/1990 12:00:00 AM
Abstract :
It is demonstrated that the linewidth enhancement in distributed-feedback (DFB) laser diodes can differ significantly from (1+ alpha 2), where alpha is Henry´s linewidth enhancement factor. The influence of the relevant laser parameters, the detuning of the gain peak wavelength, a pi /2 phase shift and a reflecting end facet on the linewidth enhancement is discussed with respect to an improved DFB laser design.
Keywords :
distributed feedback lasers; laser theory; semiconductor junction lasers; spectral line breadth; DFB laser diodes; detuning; distributed-feedback; gain peak wavelength; laser parameters; linewidth enhancement; pi /2 phase shift; reflecting end facet; semiconductor lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900372
