Title :
Tunable, narrow-linewidth and high-power lambda /4-shifted DFB laser
Author :
Kotaki, Y. ; Ogita, Shoichi ; Matsude, M. ; Kuwahara, Yutaka ; Ishikawa, Hiroshi
Author_Institution :
Fujitsu Labs. Ltd., Kanagawa, Japan
fDate :
7/20/1989 12:00:00 AM
Abstract :
A 1.5 mu m-range lambda /4-shifted DFB laser with a 1.2 mm-long cavity and three electrodes has been fabricated. The lasing wavelength can be tuned electrically over a 1.9 nm range, maintaining the linewidth below 900 kHz and a constant output power of 20 mW. The minimum linewidth of 500 kHz is achieved by nonuniform current injection.
Keywords :
distributed feedback lasers; laser cavity resonators; optical communication equipment; semiconductor junction lasers; 1.2 mm; 1.5 micron; 20 mW; 900 to 500 kHz; DFB laser; coherent optical communication; linewidth; narrow-linewidth; nonuniform current injection; output power; quarter-wave shifted laser; three electrodes; tunable lasers; tuned electrically; tuning range;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890662
