基于SOA的XPM波长转换器的噪声特性分析  

Noise Characteristics of Wavelength Converters Based on XPM in SOAs

作　　者：施伟伟[1] 张汉一[1] 滕翔[1] 吴克瑛[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《半导体光电》2004年第5期357-361,共5页Semiconductor Optoelectronics

基　　金：国家自然科学基金资助项目(69990540);国家"863"计划项目 ;国家"973"计划项目 (G2 0 0 0 0 3 660 5)

摘　　要：　研究了交叉相位调制(XPM)型波长转换器的噪声特性,讨论了如何选择XPM型波长转换器的注入电流等参量使系统处于最佳工作状态。结果表明:改变注入电流可使波长转换器周期性处于正相和反相工作状态,最佳的正反相工作点则位于使两臂半导体光放大器(SOA)的增益相等的注入电流附近。对于输入信号光和直流光功率,存在一个最佳功率值,使得波长转换的Q值最高。Noise characteristics of cross phase modulation (XPM) wavelength converters were studied,and how to achieve the best wavelength conversion performance by choosing parameters such as injecting currents was discussed.Result shows that altering the injecting currents can make the wavelength converter be between in-phase and out-phase status periodically.The optimal work points lie near where the gains of the two semiconductor optical amplifiers (SOAs) equal.There is an optimal value for pump signal power which can achieve the maximum Q value of wavelength conversion.

关 键 词：半导体光放大器 波长转换 交叉相位调制 噪声特性 

分 类 号：TN929.11[电子电信—通信与信息系统]