Fault monitoring in passive optical network using code division multiplex-based dual-OTDR traces comparison  被引量:1

Fault monitoring in passive optical network using code division multiplex-based dual-OTDR traces comparison

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作  者:袁誉星 李蔚 韩纪龙 冯其光 姚海涛 郑强 胡强高 余少华 

机构地区:[1]Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China [2]Accelink Technologies Co.,LTD,Wuhan 430074,China [3]State Key Laboratory of Optical Communication Technologies and Networks,Wuhan Research Institute of MPT,Wuhan 430074,China

出  处:《Chinese Optics Letters》2017年第3期83-87,共5页中国光学快报(英文版)

基  金:supported by the National 863Program of China(No.2015AA017002);the Research Foundation of Wuhan Science and Technology Bureau(No.2015010303010141);the Open Foundation of State Key Laboratory of Optical Communication Technologies and Networks(W.R.I.);the Accelink Technologies Company Ltd

摘  要:A dual optical time domain reflectometry (OTDR) system, which employs two different continuous waves at the optical line terminal and a pair of fiber Bragg gratings at the end of each optical network unit, is proposed in a time-division multiplexing passive optical network (PON). The proposed scheme accomplishes the fiber fault monitoring by comparing the different wavelength's testing curves. Complete complementary code is utilized to measure multiple wavelength signals simultaneously with only one receiver and to improve the dynamic range of this system. The PON system consisting of 20 km feeding fiber and a 1:16 splitter is investigated by the experiments. The experimental results show that the faulty branch can be successfully identified by using our scheme. What is more, we also demonstrate that our scheme can be applied to the multi-stage PON.A dual optical time domain reflectometry (OTDR) system, which employs two different continuous waves at the optical line terminal and a pair of fiber Bragg gratings at the end of each optical network unit, is proposed in a time-division multiplexing passive optical network (PON). The proposed scheme accomplishes the fiber fault monitoring by comparing the different wavelength's testing curves. Complete complementary code is utilized to measure multiple wavelength signals simultaneously with only one receiver and to improve the dynamic range of this system. The PON system consisting of 20 km feeding fiber and a 1:16 splitter is investigated by the experiments. The experimental results show that the faulty branch can be successfully identified by using our scheme. What is more, we also demonstrate that our scheme can be applied to the multi-stage PON.

关 键 词:Fiber Bragg gratings Network coding Passive networks Time division multiplexing 

分 类 号:TN929.1[电子电信—通信与信息系统]

 

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