全光2R再生器对星间DPSK调制/自差检测系统性能的改善  

Property Improvement of Inter-Satellite DPSK Modulation/Self-Heterodyne Detection System by All-Optical 2R Regeneration

作　　者：董毅[1] 赵尚弘[1] 李勇军[1] 韩磊[1] 赵卫虎[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《激光与光电子学进展》2013年第9期129-133,共5页Laser & Optoelectronics Progress

摘　　要：提出了采用基于非线性光纤环形镜(NOLM)的全光2R(再放大、再整形)再生器对星间差分相移键控(DPSK)信号进行放大、整形的方案。理论推导了再生器的工作原理,给出了对信号进行放大、整形的约束条件;仿真研究了再生器的输入输出功率特性和相位特性,分析了耦合器耦合系数对功率特性的影响。结果表明,全光2R再生器对基于自差探测的DPSK系统性能具有显著的改善作用,系统误码率较未使用再生器时降低接近两个量级。The scheme of using the all-optical 2R re-amplification, re-shaping regenerator based on nonlinear optical loop mirror to amplify and shape the differential phase-shift keying （DPSK） signals among satellites is proposed. The principle of the regenerator is deduced theoretically, the restrictive condition of amplifying and shaping a signal is given, the input and output characteristics of the power and phase of regenerator are investigated by simulation, and the effect of coupling coefficient of coupler on the power characteristic is analyzed. The result shows that the 2R regenerator can significantly promote the performance of DPSK modulation/self-heterodyne detection system and the bit error rate decreases nearly two orders of magnitude compared with that without the regenerator.

关 键 词：光通信 非线性光纤环形镜 2R再生器 DPSK调制 自差检测 

分 类 号：TN365[电子电信—物理电子学]