Analysis of nearly degenerate four-wave mixing in multisectionlaser diodes

摘要

The characteristics of nearly degenerate four-wave mixing (NDFWM)nin above-threshold two-section single cavity Fabry-Perot (TSSC FP) laserndiodes subject to weak or strong probe-injection power, are investigatednnumerically. The ND-PWM behaviors are significantly dependent on opticalnprobe injection into either section of a TSSC FP laser diode, and theninjected probe power. It is shown that both carrier diffusion and pumpndepletion effects play very important roles in determining thenreflectivity efficiency of conjugate wave, and that a greater thann~3.5-dB enhancement of reflectivity efficiency can be obtained in annasymmetric laser diode, compared to a symmetric laser, for strongninjection probe power. Calculations suggest that the TSSC FP laserndiodes may be applied to control the influence of carrier diffusion onnNDFWM reflectivity efficiency