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

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Abstract

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.

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DOI:10.3788/col201715.031201

所属栏目:Instrumentation, measurement and metrology

收稿日期:2016-10-03

录用日期:2016-12-23

网络出版日期:2017-01-22

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Yuxing Yuan:Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
Wei Li:Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
Jilong Han:Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
Qiguang Feng:Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
Haitao Yao:Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
Qiang Zheng:Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
Qianggao Hu:Accelink Technologies Co., LTD, Wuhan 430074, China
and Shaohua Yu:State Key Laboratory of Optical Communication Technologies and Networks, Wuhan Research Institute of MPT, Wuhan 43 0074, China

联系人作者:联系作者(weilee@hust.edu.cn)

备注:This work was supported by the National 863 Program 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.), and the Accelink Technologies Company Ltd.

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引用该论文

Yuxing Yuan, Wei Li, Jilong Han, Qiguang Feng, Haitao Yao, Qiang Zheng, Qianggao Hu, and Shaohua Yu, "Fault monitoring in passive optical network using code division multiplex-based dual-OTDR traces comparison," Chinese Optics Letters 15(3), 031201 (2017)

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