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

Volume

40

Issue

7

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

871

Lastpage

877

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;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2004.830175

Filename

1308609