Title :
Reduction of mode selectivity in DFB lasers with one cleaved facet by a tapered refractive-index profile
Author :
Soda, H. ; Kotaki, Y. ; Ishikawa, H. ; Imai, H.
Author_Institution :
Fujitsu Laboratories Ltd., Atsugi, Japan
Abstract :
The mode selectivity in DFB lasers with one cleaved facet is analysed considering a tapered refractive-index profile along a laser axis. As a result, it becomes clear that in strong coupled DFB lasers the mode selectivity is reduced remarkably by such a profile.
Keywords :
distributed feedback lasers; laser modes; refractive index; semiconductor junction lasers; DFB lasers; cleaved facet; laser axis; mode selectivity; semiconductor laser; tapered refractive-index profile; threshold condition; yield;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860272
