摘要
针对自适应偏振模色散(polarization mode dispersion,PMD)补偿系统中最佳电功率反馈信号的提取问题,利用主偏振态(principle state of polarization,PSP)理论,从PMD引起的差分群时延(different group delay,DGD)对接收信号电功率谱密度的影响入手,分析电功率反馈信号最佳频率点的选择,提出一种检测电功率反馈信号的实验方案.理论分析和实验仿真表明:在接收信号频谱中,选取12.16 GHz电功率信号作为PMD补偿系统的反馈信号是合理的.
Aimed at the problem of the extraction of optimal electro-power feedback signal in the adaptive system of polarization mode dispersion （PMD） compensation, employing the theory of principal state of polarization （PSP）, and commencing on the influence of difference group delay （DGD） caused by PMD on the electro-power spectrum density of received signals, the selection of optimal frequency point of electro- power feedback signals was analyzed and an experimental plan of detecting the electro-power feedback sig- nals was presented, also. It was shown by theoretical analysis and experimental simulation that taking 12. 16 GHz electro-power signal from received signal spectrum as a feedback one for the PMD compensation system would be reasonable.
出处
《兰州理工大学学报》
CAS
北大核心
2008年第1期72-75,共4页
Journal of Lanzhou University of Technology
基金
甘肃省自然科学基金(3ZS062-B25-037)
关键词
偏振模色散
差分群时延
主偏振态
反馈信号
polarization mode dispersion
difference group delay
principal state polarization
feedback signal
