40Gb/s超快非线性干涉仪的实验分析  

Experimental Analysis of 40 Gb/s All Optical Switch Using Ultrafast Nonlinear Interferometer

作　　者：王卓然[1] 于晋龙[1] 王新兵[1] 杨恩泽[1] 

机构地区：[1]天津大学电信学院光纤通信实验室光电信息技术科学教育部重点实验室(天津大学),天津300072

出　　处：《中国激光》2005年第7期987-992,共6页Chinese Journal of Lasers

基　　金：国家863计划(2001AA312220)资助项目。

摘　　要：全光非线性开关是全光3R再生的关键技术。在对一种全光开关[超快非线性干涉仪(UNI)]的传输函数进行分析后,得到了超快非线性干涉仪窗口的数学描述。在此基础上通过实验得到了40Gb/s的全光开关。并结合实验条件,具体分析了影响超快非线性干涉仪开关窗口的几个因素:增加半导体光放大器(SOA)的注入电流,增大控制脉冲的平均功率和调节连续光功率到最佳值,都能有效地改善输出窗口的形状和消光比,并对这种现象在理论上进行了初步分析。可以利用上述结论指导超快非线性干涉仪实验,从而使超快非线性干涉仪系统得到最大程度的优化。The technology of 40 Gb/s has developed very slowly because of many factors, such as the nonlinear characteristic of optical fiber. All-optical regeneration is the effective way to solve this problem and the key of it is all-optical-nonlinear switch. After analyzing the transmission functions of a kind of all-optical switch (ultrafast nonlinear interferometer (UNI)), the mathematical descriptions of the UNI switch window are got. As a result, the data rate of the experiment according to UNI achieves 40 Gb/s. Combined with the experimental conditions, the influencing factors of UNI switch are analyzed. By increasing the injection current of semiconductor optical amplifier (SOA), the average power of control pulse and adjusting the power of continuous light to the optimal value, the shape and extinction ratio of UNI switch are effectively improved. Based on the experiment, this phenomenon is elementarily explained in theory. It is utilized these results to do the experiments in order to optimize the UNI system to the best conditions, which will be the theoretical and experimental foundations to all-optical regeneration and many other fields.

关 键 词：光电子学 全光开关 超快非线性干涉仪 半导体光放大器 开关窗口 

分 类 号：TH744.3[机械工程—光学工程]