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Proceedings Paper

Spectral characteristics of DFB lasers in the presence of a semiconductor optical amplifier
Author(s): Alain Champagne; Jerome Camel; Romain Maciejko; Keith J. Kasunic; David M. Adams; Bjarne Tromborg
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Paper Abstract

The problem of the linewidth degradation in systems using distributed-feedback lasers together with strained-layer multi-quantum-well semiconductor optical amplifiers (SOAs) is examined. A numerical model combining finite element calculations in the transverse x-y plane and a longitudinal model based on the Green's function method is used for that purpose. Simple expressions for the linewidth in the case of AR-coated SOA output facets are derived and simulation results are given in the case of an output facet with a non-vanishing reflectivity. It is found that optimal conditions for a narrow linewidth can be determined.

Paper Details

Date Published: 17 February 2003
PDF: 11 pages
Proc. SPIE 4833, Applications of Photonic Technology 5, (17 February 2003); doi: 10.1117/12.474328
Show Author Affiliations
Alain Champagne, Ecole Polytechnique de Montreal (Canada)
Jerome Camel, Ecole Polytechnique de Montreal (Canada)
Romain Maciejko, Ecole Polytechnique de Montreal (Canada)
Keith J. Kasunic, Nortel Networks (Canada)
David M. Adams, Blueleaf Networks Canada (Canada)
Bjarne Tromborg, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 4833:
Applications of Photonic Technology 5

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