大动态OTDR特高压直流控制系统光纤诊断中的应用  

Application of optical fiber diagnosis in large dynamic OTDR extra-high voltage direct-current control system

作　　者：阮峻 李俊宇 孙豪 朱志俊 RUAN Jun;LI Junyu;SUN Hao;ZHU Zhijun(Kunming Bureau,CSG EHV Transmission Company,Kunming 650217,China)

机构地区：[1]南方电网超高压输电公司昆明局,昆明650217

出　　处：《光通信技术》2021年第6期15-17,共3页Optical Communication Technology

摘　　要：由于提高光时域反射仪(OTDR)的发射脉冲宽度可能会导致OTDR探测电路的雪崩光电二极管(APD)产生饱和效应,从而使测量到的曲线发生平顶效应,这种平顶效应会淹没近距离的事件结果。为解决这一问题,提出了一种多脉宽组合测量的方法,将测量结果进行软件拼接,在硬件配置不变的情况下既能获得更远的测量距离,又不会因为饱和平顶效应导致近距离事件被平顶淹没,提高了OTDR的测量动态范围。Increasing the transmited pulse width of optical time domain reflectometer(OTDR)may lead to saturation effect of ava-lanche photodiode(APD)in the detection circuit of OTDR,and makes the measured curve flat roof effect,which will submerge the short-range event results.To solve this problem,this paper proposes a multi-pulse width combined measurement method,the measurement results are software spliced to achieve a longer measurement distance under the condition of the hardware configuration unchanged,and the near-end events will not be submerged by the flat roof due to the saturated flat roof effect,the dynamic range of OTDR measurement is improved.

关 键 词：动态范围 曲线分段拼接 多脉冲组合测量 

分 类 号：TN256[电子电信—物理电子学]