基于双重复频率的光时域反射仪
投稿时间:2016-10-12  修订日期:2017-04-13  点此下载全文
引用本文:黄仁贵,陈杰,梁焰,沈旭玲,曾和平.基于双重复频率的光时域反射仪[J].红外与毫米波学报,2017,36(6):727~731].HUANG Ren-Gui,CHEN Jie,LIANG Yan,SHEN Xu-Ling,ZENG He-Ping.Optical time domain reflectometer based on double repetition rates[J].J.Infrared Millim.Waves,2017,36(6):727~731.]
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作者单位E-mail
黄仁贵 上海理工大学 光电信息与计算机工程学院 334931929@qq.com 
陈杰   
梁焰   
沈旭玲   
曾和平   
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)
中文摘要:提出并实现一种基于InGaAs/InP雪崩光电二极管单光子探测器的双重复频率光时域反射仪。通过发送两列重复频率有差异的脉冲激光信号对同一光纤的断点进行检测。接收系统采用高速单光子探测器,保证了回返光探测灵敏度,同时也提高了数据采样的速度。通过调节两列激光脉冲重复频率,不仅可以实现系统测量距离量程的改变,而且能够改变测量精度。
中文关键词:光时域反射仪  双重复频率  单光子探测器
 
Optical time domain reflectometer based on double repetition rates
Abstract:We proposed an system of optical time domain reflectometer with double repetition rates based on the single photon detector with InGaAs/InP avalanche photodiode. Two arrays of laser pulses with slight different repetition rates were injected into the fiber to monitor the fiber broken point. A fast single photon detector was adopted for high sensitivity in reflected pulses detection. What’s more, the measuring time was reduced. By adjusting the difference of the repetition rates, not only the mearsuring range of the system could be extended ,but also the measurement accuracy could be changed.
keywords:OTDR  Double repetition rates  SPD
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