一种3×3耦合器相位解调算法在光纤拾音系统中的应用  

Application of 3×3 coupler phase demodulation algorithm in optical fiber pickup system

作　　者：时帅 肖宁[2] SHI Shuai;XIAO Ning(The 34th Research Instiute of CETC,Guilin Guangxi 541004,China;Bowen College of Managerment,Guilin University of technology,Guilin Guangxi 541004,China)

机构地区：[1]中国电子科技集团公司第三十四研究所,广西桂林541004 [2]桂林理工大学博文管理学院,广西桂林541004

出　　处：《光通信技术》2020年第3期49-51,共3页Optical Communication Technology

基　　金：广西技术创新引导专项(桂科AC16380117)资助;广西区高校科研项目(2018KY0853)资助。

摘　　要：为了提高光纤拾音系统中耦合器解调相位的精度,提出了一种3×3耦合器相位解调算法,该算法在3×3耦合器解调的基础上,先利用迭代运算补偿2路干涉信号的直流成分,再解调音频信号。音频测量实验结果表明:该算法可有效地还原音频信号,实用性较强。In order to improve the precision of demodulation phase of coupler in optical fiber pickup system,a 3×3 coupler phase demodulation algorithm is proposed in this paper.Based on the demodulation of 3×3 coupler,this algorithm firstly compensates the direct current component of two interference signals by iterative operation,and then demodulates the audio signal.The experimental results of audio measurement show that this algorithm can effectively restore audio signal and it is practical.

关 键 词：光纤拾音 耦合器 解调算法 

分 类 号：TN929[电子电信—通信与信息系统]