基于量子点光放大器波长转换的啁啾特性研究

发布时间：2018-04-21 21:38

本文选题：光通信 + 量子点光放大器　；参考：《激光技术》2016年02期

【摘要】：信号光的啁啾特性在很大程度上会影响量子点半导体光放大器(QD-SOA)的性能,引起传输信号的走离效应,使误比特率增高。为了改善这一特性,对QD-SOA全光波长转换器的啁啾特性进行了系统分析,基于QD-SOA的交叉增益调制效应的全光波长转换原理,采用牛顿法和4阶龙格-库塔法求解速率方程和光场传输方程,计算了注入电流、抽运光脉宽和抽运光消光比变化时QD-SOA全光波长转换器输出变换光的啁啾值。结果表明,增大抽运光脉宽、减小注入电流和抽运光消光比均可减小变换光的啁啾值,通过优化这些参量可以减小啁啾的影响,但在设计QD-SOA全光波长转换器时,要考虑抽运光消光比和变换光啁啾之间的均衡。
[Abstract]:The chirp characteristics of the signal light to a great extent affect the performance of QD-SOA (Quantum Dot Semiconductor Optical Amplifier), which cause the walk-off effect of the transmitted signal and increase the bit error rate (BER). In order to improve this characteristic, the chirp characteristics of QD-SOA all-optical wavelength converter are systematically analyzed, and the all-optical wavelength conversion principle based on cross-gain modulation effect of QD-SOA is presented. Newtonian method and 4-order Runge-Kutta method are used to solve the rate equation and the light field transmission equation. The chirp values of the converted light output by the QD-SOA all-optical wavelength converter are calculated when the injection current, the pump pulse width and the pump extinction ratio vary. The results show that the chirp of the converted light can be reduced by increasing the pulse width of the pump, decreasing the injection current and the extinction ratio of the pump. By optimizing these parameters, the influence of the chirp can be reduced. However, in the design of the QD-SOA all-optical wavelength converter, The balance between the pump extinction ratio and the chirp of the converted light should be considered.
【作者单位】：曲阜师范大学物理工程学院;中国科学院上海微系统与信息技术研究所信息功能材料国家重点实验室;
【基金】：国家自然科学基金资助项目(60976015;61176065) 山东省自然科学基金资助项目(ZR2010FM023) 信息功能材料国家重点实验开放课题资助项目(SKL201307)
【分类号】：TN722

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