发送端OTDR对传输系统影响的实验研究  

Experimental research on the influence of OTDR at the transmitter on transmission system

作　　者：孙少华 杨林慧 杨兴 吴剑军 SUN Shaohua;YANG Linhui;YANG Xin;WU Jianjun(QingHai Electric Power Information Communication Co.,Ltd.of State Grid,Xining 081000,China;QingHai Electric Power Co.,Ltd.of State Grid,Xining 081000,China;Accelink Technologies Co.,Ltd.,Wuhan 430205,China)

机构地区：[1]国网青海省电力信息通信公司,西宁081000 [2]国网青海省电力公司,西宁081000 [3]武汉光迅科技股份有限公司,武汉430205

出　　处：《光通信技术》2021年第6期11-14,共4页Optical Communication Technology

摘　　要：发送端光时域反射仪(OTDR)在线探测会影响业务信号,因此较少在实际工程应用。为探究发送端OTDR对业务信号光的具体影响,对OTDR的动态范围和光脉冲功率的关系进行了理论分析,基于200 Gb/s和2 Mb/s传输系统,对发送端OTDR在线探测对业务信号光的影响及其原因做了实验研究。实验结果表明:发送端OTDR在线探测对通信业务的影响与系统单波入纤光功率、OTDR的动态范围和系统余量有关,且发送端OTDR产生的强光脉冲光会导致业务信号的强度起伏和时域脉冲波动,从而影响业务通信。Optical time domain reflectometer(OTDR)on-line detection at the transmitter will affect the service signal,so it is rarely used in practical engineering.In order to explore the specific impact of OTDR at the transmitter on the service signal light,the relationship between the dynamic range of OTDR and the power of optical pulse has been analyzed theoretically.The influence of on-line detection of OTDR at the transmitter on traffic signal light and its reasons are studied experimentally based on 200 Gb/s and 2 Mb/s transmission system.The experimental result shows that the influence of the OTDR on-line detection on the communication service is related to the incident optical power,the dynamic range of the OTDR and the system margin.The strong optical pulse which is generated by OTDR at the transmitter will cause the fluctuation of intensity and the time-domain pulse,which will affect the communication service.

关 键 词：光时域反射仪 动态范围 在线探测 光脉冲 

分 类 号：TN929.11[电子电信—通信与信息系统]