40Gb/s光纤通信系统中一阶PMD对信号频谱的影响
Effect of First-order PMD on Signal Frequency Spectrum in 40Gb/s Optical Communication System
首先给出了受一阶PMD影响的40Gbit/s高斯脉冲信号功率谱的数学表达式，并分析了脉冲波形，分光比，监测频率，以及差分群延时对接收信号功率谱的影响。实验测量了在分光比为0.5时，40Gbit/s RZ码伪随机信号在接收频率为12GHz处的电功率谱密度随差分群延时（DGD）变化的关系，实验结果与理论计算一致。这表明对于40Gb/s的光纤通信系统，可以通过简单地检测某一特定频率的电信号功率，动态跟踪系统中PMD的变化情况，从而为补偿一阶PMD提供了重要依据。
he mathematical expression of the signal power spectrum for 40Gbit/s Gauss pulse signal with the effect of first-order PMD is given, then the effects of pulse waveform, splitting ratio, monitor frequency, and differential group delay (DGD) on the receiver signal power spectrum are analyzed. The relationship between signal power spectrum and DGD is measured by the experiment under the circumstances that splitting ratio is 0.5, and the experiments well demonstrate the theoretical analysis. The result shows that first-order PMD in the 40Gbit/s optical communication system can be dynamically monitored by a certain frequency electrical signal power, which is an important basis for first order PMD compensation.
杨恩泽、胡浩、王剑、刘剑飞、于晋龙、张立台、高卿
通信光电子技术
光纤通信技术，偏振模色散，信号功率谱，偏振模色散补偿
optical fiber communication technologypolarization mode dispersion (PMD)signal power spectrumpolarization mode dispersion compensation（PMD compensation）.
杨恩泽,胡浩,王剑,刘剑飞,于晋龙,张立台,高卿.40Gb/s光纤通信系统中一阶PMD对信号频谱的影响[EB/OL].(2006-10-24)[2025-08-11].http://www.paper.edu.cn/releasepaper/content/200610-366.点此复制
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