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Investigation of linewidth and side-mode suppression for a DBR laser with integrated passive waveguide

	Electronics Letters 22 (1986), No.6, pp.340-1 ISSN: 0013-5194

	English
	Journal Article
	Fraunhofer HHI ()
	distributed bragg reflector lasers; integrated optics; laser modes; laser theory; optical communication equipment; optical waveguides; semiconductor junction lasers; spectral line breadth; distributed bragg reflector type; linewidth; side-mode suppression; integrated passive waveguide; semiconductor laser; dbr grating; 2 mm-long device

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.

: http://publica.fraunhofer.de/documents/N-14020.html