基于高速单光子探测的光时域反射测量
Received:August 15, 2016  Revised:October 08, 2016  点此下载全文
引用本文:倪文进,陈杰,梁焰,曾和平.基于高速单光子探测的光时域反射测量[J].Journal of Infrared and Millimeter Waves,2017,36(2):196~201
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Author NameAffiliationE-mail
NI Wen-Jin University of Shanghai for Science and Technology niwenjin425@aliyun.com 
CHEN Jie University of Shanghai for Science and Technology 120401077@qq.com 
LIANG Yan University of Shanghai for Science and Technology yanliangSPD@163.com 
ZENG He-Ping East China Normal University hpzeng@phy.ecnu.edu.cn 
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目);中国博士后科学基金
中文摘要:针对传统光时域反射仪(OTDR)激光出射功率高、累计时间长、测量分辨率低的问题,提出了将高速InGaAs/InP雪崩光电二极管单光子探测器应用于光时域反射测量的方法。单光子探测器的工作重复频率为1 GHz,可实现“准连续”探测,无需扫频即可快速捕获单光子水平的回返光信号并输出。该方法实现了出射光脉冲宽度为50 ps、峰值功率为10 mW,测量距离为50 km,距离精度小于10 cm,且事件盲区小于1 m的光时域反射测量。
中文关键词:单光子探测器  光时域反射  准连续
 
Optical time domain reflectometer based on high-speed single-photon detection
Abstract:To solve the problem that the conventional optical time domain reflectometer (OTDR) not only required high-power laser output and long cumulative time but also exhibited low resolution, this paper proposes an OTDR with a high-speed single-photon detector based on InGaAs/InP avalanche photodiode. The working repetition frequency of this single-photon detector was 1 GHz, achieving "quasi-continuous" detection, realizing quick capture of return signal at single-photon level without scanning. Finally, with the emitting pulsed laser of 50 ps pulse width and 10 mW peak power, this OTDR whose event dead zone is less than 1 m, could obtain the longest measuring distance of 50 km with 10 cm accuracy.
keywords:single-photon detector  optics time domain reflectometer  quasi-continuous
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