一种带温度参量的半导体激光器速率方程及仿真求解

Semiconductor Laser Rate-Equation with Temperature Parameter and Emulation Solving

摘要:

研究并求解了热效应条件下的半导体激光器的速率方程。在经典速率方程的基础上,通过引入热效应特性,得到了带温度参量修正的速率方程组,然后利用Simulink软件工具,对该非线性微分方程进行仿真求解,最后以某分布反馈激光器的参量为例,得到了不同偏置点、不同调制信号及不同温度条件下速率方程的瞬态解,并据此分析了弛豫振荡、频率啁啾等特性。仿真求解结果符合该型激光器的瞬态特性,为该型激光器设计制造和应用选型提供了一定的参考。

Abstract:

Based on classic rate-equation, by introducing the thermal effect, the rate-equations with temperature parameter correction were obtained. Then by using Simulink software tool, the nonlinear differential equation was simulated. Finally taking the parameter of a distributed feedback laser as an example, the transient solution of the rate equation under different temperature, bias points, and modulation signal was obtained, and based on which, the characters such as relaxation oscillation and frequency chirp were analyzed. The simulation results match the transient performance of this type of laser, and can provide reference for laser design and applicaion.