Title :
Influence of inhomogeneous injection on sidemode suppression in strongly coupled DFB semiconductor lasers
Author :
Bandelow, Uwe ; Wenzel, Hans ; Wunsche, H.-J.
Author_Institution :
Humboldt Univ., Berlin, Germany
fDate :
7/2/1992 12:00:00 AM
Abstract :
A longitudinally nonuniform injection counteracting the spatial hole burning in quarter-wavelength shifted DFB semiconductor lasers with strong coupling has been obtained from a quasi-three-dimensional model. This effect enlarges with falling series resistances. It substantially lowers the degradation of sidemode suppression compared with former models that assume homogeneous injection.
Keywords :
distributed feedback lasers; laser modes; laser theory; semiconductor junction lasers; DFB semiconductor lasers; inhomogeneous injection; longitudinally nonuniform injection; quarter-wavelength shifted; quasi-3D model; quasi-three-dimensional model; series resistances; sidemode suppression; spatial hole burning; strong coupling;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920841
