VCSOA中光双稳环宽控制的理论分析

Theoretical analysis of the loop width control of bistablity in VCSOA

基于法布里 珀罗(F P)腔光束干涉理论,建立垂直腔半导体光放大器 (VCSOA)的双稳模型。针对近期实验参数,仿真研究了透射模式下VCSOA的双稳特性,找到实现双稳环宽控制的 3种基本途径,即适当增大偏置电流、保持偏置与阈值比不变情况下提高顶端面反射率、减小初始相位失谐量都会使双稳环宽变宽。

Based on the beam interferential theory of Fabry-Perot semiconductor laser,a bistable model of vertical cavity semiconductor optical amplifier (VCSOA) was established. According to recently experimental parameters,the bistable characteristics of VCSOA are investigated by simulation and three methods of controlling the width of hysteresis loop have been achieved:to enhance the bias current properly,increase top mirror reflectivity of VCSOA without changing the ratio of bias current versus threshold current or decrease initial phase detuning.All the methods can increase the loop width of the hysteresis loop.