Title :
A quasi-three-dimensional large-signal dynamic model of distributed feedback lasers
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
fDate :
3/1/1996 12:00:00 AM
Abstract :
A simple, but powerful, quasi-three-dimensional large-signal dynamic model of distributed feedback semiconductor laser is presented. The transient response of lasers is analyzed by using a combined beam propagation method and time-domain algorithm that is capable of including the longitudinal and lateral variation of the optical-mode and carrier density profiles. In addition, the spontaneous emission noise, the nonuniform current injection resulting from the variation of Fermi-voltage as well as that of the refractive index distribution are also taken into consideration. Using this model, the influence of nonuniform waveguide structure on the static and dynamic responses of distributed feedback lasers is analyzed. In addition, a novel double tapered waveguide distributed feedback laser is proposed for stable single-mode operation at high power
Keywords :
carrier density; distributed feedback lasers; laser feedback; laser modes; laser noise; laser theory; optical hole burning; refractive index; semiconductor lasers; spontaneous emission; time-domain analysis; transient response; waveguide lasers; Fermi-voltage; carrier density profiles; combined beam propagation method; distributed feedback lasers; double tapered waveguide distributed feedback laser; dynamic responses; high power laser; lateral variation; longitudinal variation; nonuniform current injection; nonuniform waveguide structure; optical-mode profiles; quasi-three-dimensional large-signal dynamic model; refractive index distribution; semiconductor laser; single-mode operation; spontaneous emission noise; static responses; time-domain algorithm; transient response; Distributed feedback devices; Laser feedback; Laser modes; Laser noise; Optical noise; Optical waveguides; Power lasers; Semiconductor lasers; Transient response; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
