Title :
Investigation of linewidth and side-mode suppression for a DBR laser with integrated passive waveguide
Author :
Meissner, P. ; Patzak, E.
Author_Institution :
Heinrich-Hertz-Institut fÿr Nachrichtentechnik Berlin GmbH, Berlin, West Germany
Abstract :
A semiconductor laser device consisting of an active part monolithically integrated with a passive waveguide and a DBR grating is theoretically investigated. It is shown that for a 2 mm-long device a linewidth below 4 MHz can be achieved. The linewidth does not exceed this value even if the lasing frequency is tuned by several gigahertz. The side-mode suppression remains larger than 30 dB.
Keywords :
distributed Bragg reflector lasers; integrated optics; laser modes; laser theory; optical communication equipment; optical waveguides; semiconductor junction lasers; spectral line breadth; 2 mm-long device; DBR grating; distributed Bragg reflector type; integrated passive waveguide; linewidth; optical communication equipment; semiconductor laser; side-mode suppression;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860233
