单模半导体激光器的非线性失真特性的电路模拟

Circuit Modeling of Nonlinear Distortion of Single-Mode Semiconductor Laser Diode

本文提出了一种基于小信号等效电路的半导体激光器非线性电路模型。该模型使激光器的调制响应和非线性特性以及其它相关电子电路的非线性特性可统一地通过通用电路分析软件来分析和计算，运用此模型对一单模激光器的二阶谐波与三阶交调失真特性进行了分析，结果与已报道的理论和实验结果一致。

A nonlinear circuit model based on the small signal equivalent circuit of semiconductor laser is presented in this paper. This model enables the modulation response and nonlinear distortion of LD and other relevant circuit to be analyzed in a unified manner using any general circuit analytical software. The second harmonic and third order intermodulation distortion of a single mode LD are predicted by hsing the established model. The results are in good agreement with published theoretical and experimental data.