基于单模光纤的分布式辐射传感可行性研究  

Research on the feasibility of distributed radiation sensing based on single mode fiber

作　　者：吴江钏 马麟[1] 涂峰 何祖源 WU Jiangchuan;MA Lin;TU Feng;HE Zuyuan(State Key Laboratory of Advanced Optical Communication Systems and Networks,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]上海交通大学区域光纤通信网与新型光通信系统国家重点实验室,上海200240 [2]华南理工大学发光材料与器件国家重点实验室,广州510640

出　　处：《光通信技术》2020年第8期1-4,共4页Optical Communication Technology

基　　金：国家重点研发计划(2017YFB0405500)资助;国家自然科学基金(61775138)资助。

摘　　要：为了提高辐射传感技术的探测精度、探测剂量范围以及监测点数量,研究了使用光时域反射仪(OTDR)技术观测单模光纤的辐射致衰减(RIA)效应,从而实现分布式辐射传感应用的可行性。通过计算OTDR曲线中光功率衰减斜率,建立了单模光纤RIA与辐射剂量的线性关系。采用具有合适RIA效应的单模光纤,有望实现具有高空间分辨率的长距离分布式辐射剂量监测。In order to improve the detection accuracy,detection dose range and the number of monitoring points of radiation sensing technology,the optical time domain reflectometer(OTDR)technology is used to observe the radiation induced attenuation(RIA)effect of single-mode optical fiber,so as to realize the feasibility of distributed radiation sensing application.The linear relationship between radiation dose and RIA of single-mode fiber is established by calculating the attenuation slope of optical power in OTDR curve.Using single-mode fiber with suitable RIA effect is expected to realize long-distance distributed radiation dose monitoring with high spatial resolution.

关 键 词：伽马辐射 光纤传感 单模光纤 光时域反射仪 辐射致衰减 

分 类 号：TN914[电子电信—通信与信息系统]