Title :
Time-domain large-signal investigation on nonlinear interactions between an optical pulse and semiconductor waveguides
Author :
Chi, Jacques W D ; Chao, Lu ; Rao, M.K.
Author_Institution :
Lab. RESO, Ecole Nat. d´´Ingenieur de Brest, France
fDate :
10/1/2001 12:00:00 AM
Abstract :
A time-domain large-signal model is developed to investigate nonlinear interactions between picosecond optical pulses and semiconductor active waveguide devices, including distributed-feedback and Fabry-Perot lasers, as well as optical amplifiers. The model predicts interesting phenomena such as transform-limited superluminal transmission and directional DFB amplification. The influence of electrical carrier dynamics and feedback from a Bragg grating and/or reflecting facets on output pulses are demonstrated. Moreover, it is found that the time delay of the reflected and transmitted pulses is strongly related to the Bragg grating parameters, as well as to carrier dynamics. As a consequence, careful attention should be paid when the notions of group refractive index and group velocity are to be used in device modeling
Keywords :
Bragg gratings; carrier mobility; distributed feedback lasers; integrated optics; nonlinear differential equations; nonlinear optics; optical pulse shaping; optical waveguide theory; semiconductor optical amplifiers; time-domain analysis; waveguide lasers; Bragg grating; Fabry-Perot lasers; coupled nonlinear partial differential equations; directional DFB amplification; distributed-feedback lasers; electrical carrier dynamics; group refractive index; group velocity; nonlinear interactions; optical amplifiers; picosecond optical pulses; reflected pulses; reflecting facets; semiconductor active waveguide devices; time delay; time-domain large-signal model; transform-limited superluminal transmission; transmitted pulses; Bragg gratings; Fabry-Perot; Laser feedback; Optical feedback; Optical pulses; Optical waveguides; Pulse amplifiers; Semiconductor optical amplifiers; Semiconductor waveguides; Time domain analysis;
Journal_Title :
Quantum Electronics, IEEE Journal of