布里渊光时域光纤传感中的快速测量技术

Fast Measurement Techniques in Brillouin Optical Time-Domain Fiber Sensing

摘要:

布里渊光时域光纤传感是一种连续分布式光纤传感技术,可广泛用于获取沿传感光纤的温度和应变等物理量分布。如何提高布里渊散射信号的测量和处理速度,以满足工程应用中的快速测量需求,是布里渊光纤传感领域研究者的主要关注点之一。文章通过分析传统布里渊光时域光纤传感系统的耗时来源,综述了近年来基于频率调制、功率谱测量、图像处理去噪和布里渊谱拟合方法改进等布里渊光时域传感中的快速测量技术研究进展。

Abstract:

Brillouin optical time-domain fiber optic sensing is a continuously distributed fiber optic sensing technology that can be widely used to obtain the distribution of physical quantities such as temperature and strain along the sensing fiber. In order to meet the fast measurement requirements in engineering applications, improving the measurement and processing speed of Brillouin scattering signals is one of the main concerns of researchers in the field of Brillouin fiber sensing. By analyzing the time-consuming sources of traditional Brillouin optical time-domain optical fiber sensing systems, the research progress of fast measurement technology in Brillouin optical time-domain sensing based on frequency modulation, power spectrum measurement, image processing denoising and improvement of Brillouin spectrum fitting methods were reviewed.