Title :
Degradation of side-mode suppression ratio in a DFB laser integrated with a semiconductor optical amplifier
Author :
Champagne, A. ; Lestrade, Michel ; Camel, Jérôme ; Maciejko, Roman ; Tromborg, Bjarne
Author_Institution :
Dept. de Genie Phys., Ecole Polytechnique de Montreal, Canada
fDate :
7/1/2004 12:00:00 AM
Abstract :
The degradation of the side-mode suppression ratio (SMSR) in a monolithically integrated distributed feedback laser and semiconductor optical amplifier (SOA) cavity is investigated. An expression is derived that gives the degradation of the SMSR in the case of a perfectly antireflection-coated SOA facet. The amplified spontaneous emission (ASE) backcoupling can have dramatic effects and degrade the SMSR of single-mode devices to unacceptable levels.
Keywords :
distributed feedback lasers; integrated optics; semiconductor optical amplifiers; DFB laser; amplified spontaneous emission backcoupling; monolithically integrated distributed feedback laser; perfectly antireflection-coated SOA facet; semiconductor optical amplifier cavity; side-mode suppression ratio; single-mode devices; Automotive engineering; Degradation; Distributed feedback devices; Laser feedback; Optical feedback; Partial differential equations; Power lasers; Semiconductor lasers; Semiconductor optical amplifiers; Spontaneous emission; DFB; Distributed feedback; SMSR; SOAs; lasers; linewidth; photonic integration; semiconductor optical amplifiers; side-mode suppression ration;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.830175
