Title :
Large-signal dynamic model of the DFB laser
Author :
Zhang, L.M. ; Carroll, John.E.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
fDate :
3/1/1992 12:00:00 AM
Abstract :
A computer model is proposed to analyze the characteristics of distributed feedback (DFB) lasers. The model is based on time-dependent coupled wave equations, with spontaneous emission taken into account. In order to avoid uncertain phase factors in spontaneous emission, a method of converting field equations to power equations in a matrix format before computation is introduced. The steady-state LI curve and transient response to the pulse excitation are calculated in the λ/4 phase-shifted DFB lasers. The longitudinal variations of the carrier and photon densities as well as of the refractive index are considered in the model
Keywords :
distributed feedback lasers; modelling; semiconductor junction lasers; carrier densities; computer model; field equations; large signal dynamic model; matrix format; phase shifted distributed feedback lasers; photon densities; power equations; pulse excitation; refractive index; semiconductor lasers; spontaneous emission; time-dependent coupled wave equations; transient response; Distributed computing; Distributed feedback devices; Laser feedback; Laser modes; Matrix converters; Optical pulses; Partial differential equations; Spontaneous emission; Steady-state; Transient response;
Journal_Title :
Quantum Electronics, IEEE Journal of
