Title :
High-efficiency operation of phase-adjusted DFB laser by asymmetric structure
Author :
Kotai, Y. ; Soda, H. ; Wakao, K. ; Ishikawa, H. ; Yamakoshi, S. ; Imai, H.
Author_Institution :
Fujitsu Laboratories Ltd., Atsugi, Japan
Abstract :
Differential efficiency has been increased by 50% in a phase-adjusted DFB laser by the introduction of an asymmetric structure. The problem of mode degeneracy in DFB lasers has been resolved without penalty on efficiency and output power.
Keywords :
distributed feedback lasers; semiconductor junction lasers; asymmetric structure; efficiency; high efficiency operation; mode degeneracy; output power; phase-adjusted DFB laser; semiconductor lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860314
