CAJ | 학술논문

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。
재양자점반도체광방대기（QD-SOA）적정태모형기출상，건립료동태모형。토론료기우QD-SOA적교차증익조제(XGM)적파장전환특성원리。채용세화분단방법급사계룡격-고탑법구해속솔방정급광장전수방정，급출료변환전후적파형대조。통과개변QD-SOA적자신급외부삼수，토론료수출탐측광소광비적영향인소，결과표명증대빙포광공솔、감소탐측광공솔、증대주입전류급유원구장도도가이증대소광비，종이능구증강신호적항간우능력。
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.