Title :
Linewidth broadening in a distributed feedback laser integrated with a semiconductor optical amplifier
Author :
Champagne, Alain ; Camel, Jerome ; Maciejko, Roman ; Kasunic, K.J. ; Adams, David M. ; Tromborg, Bjarne
Author_Institution :
Dept. de Genie Phys., Ecole Polytech. de Montreal, Que., Canada
fDate :
11/1/2002 12:00:00 AM
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 modified expression for the linewidth in the case of anti reflection-coated SOA output facets is derived and simulation results are given in the case of output facets with a nonvanishing reflectivity. 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.
Keywords :
Green´s function methods; antireflection coatings; distributed feedback lasers; finite element analysis; laser theory; quantum well lasers; reflectivity; semiconductor device models; semiconductor optical amplifiers; spectral line broadening; Green´s function method; antireflection-coated SOA output facets; distributed feedback laser; distributed-feedback lasers; finite-element calculations; linewidth broadening; linewidth degradation; longitudinal model; nonvanishing reflectivity; numerical model; output facets; semiconductor optical amplifier; strained-layer multi-quantum-well semiconductor optical amplifiers; Degradation; Distributed feedback devices; Finite element methods; Green´s function methods; Laser feedback; Laser modes; Numerical models; Reflectivity; Semiconductor lasers; Semiconductor optical amplifiers;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2002.804263
