分布式光纤传感技术用于辐射监测的初步探讨

Preliminary Study of Distributed Optical Fiber Sensing Technology in Radiation Monitoring

根据光纤受辐照引起缺陷以及着色中心的形成使其光学性能下降产生相应的损耗,提出一种基于分布式光纤传感技术的辐射监测系统的设想,即通过比较输入光和输出光的强度,反演出辐射的剂量,同时利用空分复用技术,采用多个光纤传感器,可以实现对核电站、核武器库等放射物质集中的场所进行大面积多点监测。

A decline of optical performance and corresponding loss originated when the optical fiber has been exposed in the radiation environment due to radiation-induced defects and the formation of color centers.According that,a conception of radiation monitoring system,based on distributed optical fiber single-end sensing technique,was introduced.It can be used to retrieve the dose of radiation by comparing light intensity of the output with the input.And space division multiplexing technology and many fiber-optic sensors are adopted to make multipoint supervision of nuclear power plants and nuclear arsenals and so on,where radioactive materials are concentrated,over large area.