集成双波导半导体光放大器光开关实现波长转换的理论研究

Theoretical study of wavelength conversion based on integrated twin-guide semiconductor optical amplifier optical switch

建立了基于集成双波导半导体光放大器的光开关(ITG-SOA-Switch)的理论分析模型.与半导体光放大器(SOA)的特性相比较表明,由于ITG-SOA-Switch合并了多种物理效应,故其静态增益饱和曲线在饱和功率点附近具有大幅度陡峭下降的独特性质.理论分析和10Gbit/s波长转换模拟结果显示,恰当地选择输入抽运光的功率范围,ITG-SOA-Switch波长转换器输出转换光的消光比特性较之输入抽运光会有显著的改善.

A model of integrated twin-guide semiconductor optical amplifier optical switch （ITG-SOA-Switch） is proposed. Comparison analyses with semiconductor optical amplifier （SOA） reveals that because of the combination of several physical effects by SOA-Switch, only a small increase of input power around 3 dB saturation point can cause a big decrease of gain. Theoretical analyes and the simulation results of 10Gbit/s wavelength conversion indicate that the extinction ratio of output converted signal of ITG-SOA-Switch can be greatly improved compared with that of input pump signal in a moderate pump power range.