Title :
Wide tuning with narrow linewidth in DFB lasers with superstructure grating (SSG)
Author :
Tohmori, Y. ; Kano, F. ; Ishii, Hiroyuki ; Yoshikuni, Y. ; Kondo, Yuta
fDate :
7/22/1993 12:00:00 AM
Abstract :
A DFB laser with superstructure grating (SSG) is reported. This laser consists of two SSG reflectors with slightly different designs and a phase control region, and it operates at high power at approximately 1.55 mu m. A wide tuning range of 86 nm was obtained by tuning the SSGs in combination. Linewidth characteristics of less than 5 MHz were demonstrated over a tuning range as wide as 50 nm.
Keywords :
diffraction gratings; distributed feedback lasers; integrated optics; laser tuning; semiconductor lasers; spectral line breadth; 1.55 micron; DFB lasers; narrow linewidth; phase control region; reflectors; superstructure grating; wide tuning range;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19930905
