【摘要】 在量子点半导体光放大器(QD-SOA)的静态模型基础上,建立了动态模型。讨论了基于QD-SOA的交叉增益调制(XGM)的波长转换特性原理。采用细化分段方法及四阶龙格-库塔法求解速率方程及光场传输方程,给出了变换前后的波形对照。通过改变QD-SOA的自身及外部参数,讨论了输出探测光消光比的影响因素,结果表明增大泵浦光功率、减小探测光功率、增大注入电流及有源区长度都可以增大消光比,从而能够增强信号的抗干扰能力。更多还原

【Abstract】 Based on the static model of quantum-dot semiconductor optical amplifiers(QD-SOA),the dynamic model is established.The characteristics of wavelength converters based on cross-gain modulation(XGM) of QD-SOA are discussed.The rate equations and light field transfer equations are solved by utilizing the refined sectionalized method and the Runge-Kutta method.This paper also gives the waveform contrast of between before and after the conversion.The extinction ratio of output waveform for detecting light is discussed by changing the inherent parameters and the external ones.The experiment results show that by raising the pump optical power,reducing the detection optical power,and increasing the injection current and active-region length,the extinction ratio and the anti-interference ability of the signal could be improved.更多还原