A high-sensitivity optical fiber magnetic field sensor based on magnetostrictive effect

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

Optical Fiber Technology Pub Date : 2025-07-05 DOI:10.1016/j.yofte.2025.104323

XinYue Wang , Yan Hua Dong , Ming Jia , Zhuo Lu Ou , Shao Yi Gu , Liang Rong , Xiao Bei Zhang

{"title":"A high-sensitivity optical fiber magnetic field sensor based on magnetostrictive effect","authors":"XinYue Wang , Yan Hua Dong , Ming Jia , Zhuo Lu Ou , Shao Yi Gu , Liang Rong , Xiao Bei Zhang","doi":"10.1016/j.yofte.2025.104323","DOIUrl":null,"url":null,"abstract":"<div><div>This paper introduces a high-sensitivity sensor integrated within a Michelson interferometer. Due to the low-loss and bending-insensitive characteristics of the thin-diameter single-mode optical fiber, it is coiled around a Terfenol-D rod to construct the sensing unit, enabling magnetostrictive strain of the rod converting into optical fiber phase shifts directly. As the length of the optical fiber in the sensing unit increases, the effective length affected by magnetostriction also extends, resulting in a larger phase difference and consequently enhanced magnetic field sensitivity. Simultaneously, the increased fiber-length applies greater pressure on the Terfenol-D rod, enhancing its prestress. The prestress mitigates magnetic hysteresis effect and minimizes the nonlinear response of the rod, thereby improving the linearity of the sensor. The highest sensitivity reaches 123 mrad/μT at 500 Hz for a fiber length of 300 m, with an AC magnetic field phase resolution of 121 pT/Hz<sup>1/2</sup>. The sensor demonstrates high sensitivity, excellent linearity, and a simple structure, making it well-suited for detecting weak-magnetic targets and remote sensing applications.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"94 ","pages":"Article 104323"},"PeriodicalIF":2.6000,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optical Fiber Technology","FirstCategoryId":"94","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1068520025001981","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

This paper introduces a high-sensitivity sensor integrated within a Michelson interferometer. Due to the low-loss and bending-insensitive characteristics of the thin-diameter single-mode optical fiber, it is coiled around a Terfenol-D rod to construct the sensing unit, enabling magnetostrictive strain of the rod converting into optical fiber phase shifts directly. As the length of the optical fiber in the sensing unit increases, the effective length affected by magnetostriction also extends, resulting in a larger phase difference and consequently enhanced magnetic field sensitivity. Simultaneously, the increased fiber-length applies greater pressure on the Terfenol-D rod, enhancing its prestress. The prestress mitigates magnetic hysteresis effect and minimizes the nonlinear response of the rod, thereby improving the linearity of the sensor. The highest sensitivity reaches 123 mrad/μT at 500 Hz for a fiber length of 300 m, with an AC magnetic field phase resolution of 121 pT/Hz^1/2. The sensor demonstrates high sensitivity, excellent linearity, and a simple structure, making it well-suited for detecting weak-magnetic targets and remote sensing applications.

查看原文本刊更多论文

一种基于磁致伸缩效应的高灵敏度光纤磁场传感器

介绍了一种集成在迈克尔逊干涉仪中的高灵敏度传感器。由于薄直径单模光纤具有低损耗和弯曲不敏感的特性，因此将其缠绕在Terfenol-D棒上构建传感单元，使棒的磁致伸缩应变直接转换为光纤相移。随着传感单元内光纤长度的增加，受磁致伸缩影响的有效长度也随之延长，导致相位差增大，从而增强了磁场灵敏度。同时，纤维长度的增加对Terfenol-D棒施加了更大的压力，增强了其预应力。预应力减轻了磁滞效应，使杆的非线性响应最小化，从而提高了传感器的线性度。当光纤长度为300 m时，在500 Hz时灵敏度最高可达123 mrad/μT，交流磁场相位分辨率为121 pT/Hz1/2。该传感器具有高灵敏度、良好的线性度和简单的结构，非常适合于探测弱磁目标和遥感应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.