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Recent Advancements in Rayleigh Scattering-Based Distributed Fiber Sensors 基于瑞利散射的分布式光纤传感器研究进展
Pub Date : 2021-03-11 DOI: 10.34133/2021/8696571
X. Bao, Yuansheng Wang
Recently, Rayleigh scattering-based distributed fiber sensors have been widely used for measurement of static and dynamic phenomena such as temperature change, dynamic strain, and sound waves. In this review paper, several sensing systems including traditional Rayleigh optical time domain reflectometry (OTDR), Φ-OTDR, chirped pulse Φ-OTDR, and optical frequency domain reflectometry (OFDR) are introduced for their working principles and recent progress with different instrumentations for various applications. Beyond the sensing technology and instrumentation, we also discuss new types of fiber sensors, such as ultraweak fiber Bragg gratings and random fiber gratings for distributed sensing and their interrogators. Ultimately, the limitations of Rayleigh-based distributed sensing systems are discussed.
近年来,基于瑞利散射的分布式光纤传感器被广泛应用于温度变化、动态应变和声波等静态和动态现象的测量。本文介绍了传统瑞利光时域反射计(OTDR)、Φ-OTDR、啁啾脉冲Φ-OTDR、光频域反射计(OFDR)等传感系统的工作原理,以及在不同仪器上应用的最新进展。除了传感技术和仪器之外,我们还讨论了新型光纤传感器,如用于分布式传感的超弱光纤布拉格光栅和随机光纤光栅及其询问器。最后,讨论了基于瑞利的分布式传感系统的局限性。
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引用次数: 28
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Advanced Devices & Instrumentation
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