Title :
Highly nondegenerate four-wave mixing in uniform and λ/4-shifted DFB lasers
Author :
Chi, Jacques W D ; Shore, K. Alan ; Le Bihan, Jean
Author_Institution :
Lab. RESO, Ecole Nat. d´´Ingenieurs de Brest, France
fDate :
11/1/1997 12:00:00 AM
Abstract :
A theoretical investigation of highly nondegenerate four-wave mixing (HNDFWM) in uniform and quarter-waveshifted distributed feedback (DFB) lasers in the weak injection regime has been performed using a numerical analysis of the coupled-wave equations. The effects of carrier spatial and spectral hole burning, carrier heating, and longitudinally variable pump field above the laser threshold are included. Pump-probe detunings up to 1.5 THz are investigated. It is found that, for small and moderate DFB coupling coefficients, the conjugate wave can be generated in a bandwidth of ~1 THz with an efficiency of -20 dB or more, compared to the injected probe power
Keywords :
distributed feedback lasers; laser feedback; laser theory; multiwave mixing; optical hole burning; optical pumping; semiconductor device models; semiconductor lasers; λ/4-shifted DFB lasers; 1 THz; DFB coupling coefficients; carrier heating; carrier spatial hole burning; conjugate wave; coupled-wave equations; highly nondegenerate four-wave mixing; injected probe power; laser threshold; longitudinally variable pump field; numerical analysis; pump-probe detunings; quarter-waveshifted distributed feedback lasers; semiconductor lasers; spectral hole burning; theoretical investigation; weak injection regime; Distributed feedback devices; Equations; Four-wave mixing; Heat pumps; Laser excitation; Laser feedback; Laser theory; Numerical analysis; Optical coupling; Pump lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
