High-sensitivity strain sensor with air microbubble based on the Vernier effect

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-06-09 DOI:10.1016/j.yofte.2025.104295

Jingwei Lv , Weijie Kong , Jianxin Wang , Wei Li , Renfeng Li , Liangliang Li , Qiang Liu , Jianing Shi , Wei Liu , Pan Meng , Xinrui Guo , Paul K. Chu , Chao Liu

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Abstract

A highly sensitive optical fiber strain sensor with simple structure, easy preparation and temperature insensitivity is proposed. It consists of a parallel Fabry-Pérot Interferometer (FPI) based on the Vernier Effect (VE). The sensing cavity (FPI_S) is formed by two single-mode fibers (SMFs) by fusion splicer arc discharge, and the reference cavity (FPI_R) consists of two SMFs inserted into a hollow capillary tube（HCT）. The sensor has a high strain sensitivity of −42.04 pm/µε and an ultra-low temperature cross-sensitivity of 0.022 µε/°C, which reduces the measurement errors caused by temperature variations. At the same time, stable experimental measurements show that the interference fringes change by less than 20 pm. This sensor combines high strain sensitivity, ultra-low temperature cross-sensitivity, and stable performance for precise strain measurement applications.

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基于游标效应的空气微泡高灵敏度应变传感器

提出了一种结构简单、制备方便、温度不敏感的高灵敏度光纤应变传感器。它由一个基于游标效应（VE）的平行法布里-普氏干涉仪（FPI）组成。传感腔（FPIS）由两根单模光纤（smf）通过熔接电弧放电形成，参考腔（FPIR）由两根smf插入空心毛细管（HCT）组成。该传感器具有−42.04 pm/µε的高应变灵敏度和0.022µε/°C的超低温交叉灵敏度，减小了温度变化引起的测量误差。同时，稳定的实验测量表明，干涉条纹的变化小于20pm。该传感器结合了高应变灵敏度，超低温交叉灵敏度和稳定的性能，适用于精确的应变测量应用。

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

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.