混沌布里渊光相关域分析技术进展  

Progress in Chaotic Brillouin Optical Correlation-Domain Analysis

作　　者：王亚辉 赵乐 张倩 乔丽君 王涛 张建忠 张明江 Wang Yahui;Zhao Le;Zhang Qian;Qiao Lijun;Wang Tao;Zhang Jianzhong;Zhang Mingjiang(Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China;College of Physics and Optoelectronics,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China)

机构地区：[1]太原理工大学新型传感器与智能控制教育部重点实验室,山西太原030024 [2]太原理工大学物理与光电工程学院,山西太原030024

出　　处：《激光与光电子学进展》2021年第13期148-164,共17页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(62075151,62075153,61875146,61527819);山西省重点研发计划(高新领域)项目(201903D121177,201803D121064);山西省“三晋学者”特聘教授(专家)支持计划(201617)。

摘　　要：分布式光纤传感技术已广泛应用于基础设施的健康监测、军事国防安全等领域,长距离高空间分辨率的混沌布里渊光相关域分析(chaotic BOCDA)技术具有广阔的发展和应用前景。Chaotic BOCDA以类噪声、宽频带、宽光谱的混沌激光为探测信号,分别利用其类δ函数特性拓展传感距离、利用自相关特性提高空间分辨率以及利用高斯型光谱特性获得本征展宽的布里渊增益谱。基于上述特性,分别综述了10.2 km长传感距离、3.5 mm高空间分辨率和1200με大范围动态应变监测的chaotic BOCDA系统。此外,还分析讨论了chaotic BOCDA技术的优缺点,并对其发展前景进行了展望。Distributed optical fiber sensing technology has been widely applied in the areas of infrastructure health monitoring, national defense security and etc. Long-reach high-spatial-resolution chaotic Brillouin optical correlationdomain analysis(chaotic BOCDA) technology has extensive development and application prospects. Chaotic laser of noise-like, wide-band radio frequency spectrum and broadband optical spectrum is served as signal source in chaotic BOCDA. Therefore, the sensing distance is extended by its δ-like function, the spatial resolution is improved by its auto-correlation property, and the intrinsically broadened Brillouin gain spectrum is obtained by its Gaussian optical spectrum. Based on these characteristics, this review article provides an overview of our recent progresses in chaotic BOCDA system with 10. 2 km-long sensing distance, 3. 5 mm-high spatial resolution and 1200 με-large dynamic range. Moreover, the relative merits and avenues for future research and development of chaotic BOCDA technology are also discussed and prospected.

关 键 词：光纤传感器 混沌激光 受激布里渊散射 布里渊光相关域分析 高空间分辨率 

分 类 号：TN29[电子电信—物理电子学]