激光与光电子学进展, 2023, 60 (11): 1106007, 网络出版: 2023-06-05
OFDR分布式光纤温度/应变/形状传感研究进展 下载: 770次特邀综述
Research on Distributed Fiber Temperature/Strain/Shape Sensing Based on OFDR
光频域反射技术 分布式光纤传感 瑞利散射 温度传感 应变传感 形状传感 optical frequency domain reflectometry distributed optical fiber sensing Rayleigh scattering temperature sensing strain sensing shape sensing
摘要
基于瑞利散射的光频域反射技术(OFDR)因其高空间分辨率和高灵敏度等优点,在航空航天、健康医疗和高精密仪器检测等领域受到广泛关注。OFDR技术因光纤中瑞利信号弱和光源非线性调谐等问题,限制了其空间分辨率和传感距离等性能的提升。针对此问题,论述了OFDR传感原理,介绍了提升OFDR性能的光纤后处理和数据后处理2种方法,重点介绍了紫外曝光和飞秒激光后处理方法制备瑞利散射增强型光纤,并利用瑞利散射增强型光纤结合后处理算法,实现了温度、应变和三维形状传感。
Abstract
Optical frequency domain reflectometry (OFDR) based on Rayleigh backscattering (RBS) has drawn significant attention in the fields of aerospace, health care, and high-precision instrument testing due to its advantages of exhibiting high spatial resolution and high sensitivity. The improvements in the spatial resolution and sensing distance of OFDR is limited by the weak RBS in the fiber and nonlinear tuning of the laser source. To address these problems, two methods, namely, optical fiber post processing and data post processing are introduced, focusing on RBS enhanced fiber using ultraviolet and femtosecond lasers. Moreover, the temperature, strain, and three-dimensional shape sensing properties are realized using RBS enhanced fiber and data post processing methods.
付彩玲, 彭振威, 李朋飞, 孟彦杰, 钟华健, 杜超, 王义平. OFDR分布式光纤温度/应变/形状传感研究进展[J]. 激光与光电子学进展, 2023, 60(11): 1106007. Cailing Fu, Zhenwei Peng, Pengfei Li, Yanjie Meng, Huajian Zhong, Chao Du, Yiping Wang. Research on Distributed Fiber Temperature/Strain/Shape Sensing Based on OFDR[J]. Laser & Optoelectronics Progress, 2023, 60(11): 1106007.