光时域布里渊分布式光纤动态应变传感技术研究进展
Advances of Optical Time Domain Brillouin Distributed Fiber Dynamic Strain Sensing Technology
韦若雪 1刘戈 1陆杭林 1邵来鹏 1唐剑 1胡君辉1
作者信息
- 1. 广西师范大学物理科学与技术学院,广西 桂林 541004
- 折叠
摘要
布里渊分布式光纤传感技术可以实现分布式、长距离、高精度的温度或应变传感,在大型基础设施安全监测方面具有广泛的应用前景.传统的布里渊光时域分析技术(BOTDA)和布里渊光时域反射技术(BOTDR)由于需要通过扫频测量布里渊增益谱进而获得布里渊频移,测量过程较为耗时,难以胜任动态应变的测量.针对这一问题,学者们提出了多种解决技术方案并取得了很好的研究成果.本文对光时域布里渊分布式光纤动态应变传感技术的研究进展进行了详细综述,包括斜坡辅助布里渊光时域分析技术(SA-BOTDA)和布里渊光时域反射技术(SA-BOTDR)、捷变频BOTDA/R技术、啁啾链BOTDA/R技术和光频梳BOTDA技术等.
Abstract
Brillouin distributed fiber sensing technology can realize distributed,long-distance,high precision temperature,or strain sensing and has a wide range of applications in large-scale infrastructure security monitoring.Traditional Brillouin optical time domain analysis and reflectometry(BOTDA/R)must measure Brillouin's gain spectrum by sweeping frequency to obtain Brillouin's frequency shift.The measurement process is time-consuming,and it is difficult to measure the dynamic strain.To solve this problem,researchers have proposed various technical schemes and made significant progress.This paper summarizes the recent progress of the time-domain Brillouin optical distributed fiber dynamic strain sensing system,including the BOTDA/R dynamic sensing system based on the slope-assisted method as well as the frequency-agile,optical chirp chain,and optical frequency comb techniques.
关键词
分布式光纤传感/布里渊散射/动态应变/布里渊光时域反射Key words
distributed fiber sensing/Brillouin scattering/dynamic strain/Brillouin optical time domain reflectometry引用本文复制引用
基金项目
国家自然科学基金(62165002)
广西重点研发计划项目(桂科AB18221033)
广西高等学校千名中青年骨干教师培育计划项目()
桂林市科学研究与技术开发计划(20210217-3)
出版年
2024
NETL
NSTL
万方数据