一种全光信号优化结构的设计与实现  

Design and Realization of an All-Optical Signal Optimization Structure

作　　者：邓大鹏[1] 曹东东[1] 廖晓闽[1] 林初善[1] 李将[1] 

机构地区：[1]中国人民解放军西安通信学院,陕西西安710106

出　　处：《中国激光》2013年第6期235-240,共6页Chinese Journal of Lasers

摘　　要：利用两段色散互补的单模光纤跨段,并结合一个相位偏移器,设计出了一种基于光纤自相位调制效应的全光信号优化结构。理论分析了光纤中的自相位调制效应,介绍了优化结构的工作原理和基于半导体光放大器(SOA)与马赫-曾德尔干涉仪(MZI)的全光异或原理,并通过光通信系统设计软件OptiSystem搭建了全光异或门和全光信号优化结构的仿真模型,分别对速率为10Gb/s和40Gb/s的全光异或输出结果进行了优化,使得异或输出消光比分别从10dB和9dB提高到约26dB,并得到质量优良的输出眼图。结果表明,常规的全光异或输出消光比普遍较低,通过全光信号优化结构可以使消光比得到大幅提高,改善输出信号的质量。An all-optical signal optimization structure based on the self-phase modulation （SPM） effect of fiber is designed by using two single-mode fiber spans with dispersion compensation, and combining a phase shifter. The self phase modulation effect of fiber is analyzed theoretically. The working principles of optimization structure and all- optical XOR gate based on semiconductor optical amplifier （SOA） and Mach-Zehnder interferometer （MZI） are introduced respectively, and the simulation models of all-optical XOR gate and all-optical signal optimization structure are built by using the optical communication system design software OptiSystem. The all-optical XOR output results at 10 Gb/s and 40 Gb/s rate are optimized respectively, making that the XOR output extinction ratios are improved respectively from 10 dB and 9 dB to about 26 dB, and the eye diagrams with good quality are obtained. The results show that the conventional all-optical XOR output extinction ratio is low generally, the all-optical signal optimization structure can improve the extinction ratio significantly and improve the quality of the output signals.

关 键 词：光通信 全光信号处理 全光异或门 全光信号优化结构 自相位调制 相位偏移 

分 类 号：TN913.7[电子电信—通信与信息系统]