| 基于高速单光子探测的光时域反射测量 |
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| 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].红外与毫米波学报,2017,36(2):196-201. |
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| 作者姓名： | 倪文进 陈杰 梁焰 曾和平 |
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| 作者单位： | 上海理工大学,上海理工大学,上海理工大学,华东师范大学 |
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| 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 |
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| 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.
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| 关 键 词： | 单光子探测器 光时域反射 准连续 |
| 收稿时间： | 2016/8/15 0:00:00 |
| 修稿时间： | 2016/10/8 0:00:00 |
Optical time domain reflectometer based on high-speed single-photon detection |
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| NI Wen-Jin,CHEN Jie,LIANG Yan and ZENG He-Ping.Optical time domain reflectometer based on high-speed single-photon detection[J].Journal of Infrared and Millimeter Waves,2017,36(2):196-201. |
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| Authors: | NI Wen-Jin CHEN Jie LIANG Yan and ZENG He-Ping |
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| Affiliation: | University of Shanghai for Science and Technology,University of Shanghai for Science and Technology,University of Shanghai for Science and Technology,East China Normal University |
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| 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. |
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| Keywords: | single-photon detector optics time domain reflectometer quasi-continuous |
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