Simultaneous Measurement of Distributed Temperature and Strain through Brillouin Frequency Shift Using a Common Communication Optical Fiber

IF 1.8 4区物理与天体物理 Q3 OPTICS

International Journal of Optics Pub Date : 2021-04-29 DOI:10.1155/2021/6610674

Leijun Hu, Liwen Sheng, Jisong Yan, Ligong Li, M. Yuan, Fu Sun, F. Nian, Long Li, Jiaqing Liu, Shuai Zhou, Zhiming Liu

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引用次数: 4

Abstract

A multiparameter Brillouin fiber-optic sensor for distributed strain and temperature information measuring based on spontaneous scattering in a common communication optical fiber (the G. 652. D commercial fiber) is presented and experimentally demonstrated. Benefiting from the difference of the temperature and strain sensitivity from different Brillouin peaks with different acoustic modes, our proposed sensing configuration can be used to distinguish ambient temperature and applied strain at the same time, which is an excellent candidate to address the problem of cross-sensitivity in the classical Brillouin system. In the experimental section, using a 21.8 km sensing length of communication optical fiber, a temperature accuracy of 1.13°C and a strain accuracy of 21.46 μe are obtained simultaneously. Considering the performance we achieved now, the proposed innovation and experimental setup will have some potential applications in the field of fiber sensors.

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利用普通通信光纤进行布里渊频移同时测量分布温度和应变

一种用于基于普通通信光纤中自发散射的分布式应变和温度信息测量的多参数布里渊光纤传感器（G.652。D商用纤维），并进行了实验验证。得益于不同声学模式下不同布里渊峰的温度和应变灵敏度的差异，我们提出的传感配置可以同时用于区分环境温度和施加的应变，这是解决经典布里渊系统中交叉灵敏度问题的一个很好的候选者。在实验部分，使用21.8 通信光纤传感长度为km，温度精度为1.13°C，应变精度为21.46 μe。考虑到我们现在取得的性能，所提出的创新和实验装置将在光纤传感器领域具有一些潜在的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Optics Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

3.40

自引率

5.90%

发文量

审稿时长

13 weeks

期刊介绍： International Journal of Optics publishes papers on the nature of light, its properties and behaviours, and its interaction with matter. The journal considers both fundamental and highly applied studies, especially those that promise technological solutions for the next generation of systems and devices. As well as original research, International Journal of Optics also publishes focused review articles that examine the state of the art, identify emerging trends, and suggest future directions for developing fields.