A novel MZI-based fiber-optic DC current sensor with conductive silver adhesive coating

IF 2.7 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-07-24 DOI:10.1016/j.yofte.2025.104352

Zinan Tu, Su Sheng, Fulin Chen, Qichang Jiang, Yuanqing Wang, Xinyu Liu, Jian Wen, Chao Jiang

{"title":"A novel MZI-based fiber-optic DC current sensor with conductive silver adhesive coating","authors":"Zinan Tu, Su Sheng, Fulin Chen, Qichang Jiang, Yuanqing Wang, Xinyu Liu, Jian Wen, Chao Jiang","doi":"10.1016/j.yofte.2025.104352","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a novel fiber-optic DC current sensor designed to address the need for precise DC current measurement. The sensor employs a Mach-Zehnder interferometer (MZI) configuration based on a multimode-thin-core-multimode fiber (MMF-TCF-MMF) structure, enhanced by a uniformly coated conductive silver adhesive layer. Joule heating generated by the adhesive under direct current induces a measurable wavelength shift in the interferometer. Temperature sensitivity was first evaluated, demonstrating a linear response of 35.76 pm/°C between 25 °C and 70 °C. Current testing revealed quadratic dependence on applied current: sensitivity reached 4.912 nm/A<sup>2</sup> for 0.4–0.7 A and increased to 20.769 nm/A<sup>2</sup> for 1.0–1.5 A, representing a 4.2-fold enhancement at higher currents. The sensor exhibits high sensitivity, compact design, cost-effectiveness, and robust repeatability and stability. These features position it as a promising solution for practical current detection applications.</div></div>","PeriodicalId":19663,"journal":{"name":"Optical Fiber Technology","volume":"94 ","pages":"Article 104352"},"PeriodicalIF":2.7000,"publicationDate":"2025-07-24","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/S1068520025002275","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 study presents a novel fiber-optic DC current sensor designed to address the need for precise DC current measurement. The sensor employs a Mach-Zehnder interferometer (MZI) configuration based on a multimode-thin-core-multimode fiber (MMF-TCF-MMF) structure, enhanced by a uniformly coated conductive silver adhesive layer. Joule heating generated by the adhesive under direct current induces a measurable wavelength shift in the interferometer. Temperature sensitivity was first evaluated, demonstrating a linear response of 35.76 pm/°C between 25 °C and 70 °C. Current testing revealed quadratic dependence on applied current: sensitivity reached 4.912 nm/A² for 0.4–0.7 A and increased to 20.769 nm/A² for 1.0–1.5 A, representing a 4.2-fold enhancement at higher currents. The sensor exhibits high sensitivity, compact design, cost-effectiveness, and robust repeatability and stability. These features position it as a promising solution for practical current detection applications.

查看原文本刊更多论文

一种新型导电银胶涂层mzi型光纤直流电流传感器

本研究提出了一种新型的光纤直流电流传感器，以满足精确测量直流电流的需要。该传感器采用基于多模薄芯多模光纤（MMF-TCF-MMF）结构的Mach-Zehnder干涉仪（MZI）配置，并通过均匀涂覆导电银粘合剂层进行增强。胶粘剂在直流作用下产生焦耳热，在干涉仪中产生可测量的波长偏移。首先评估了温度敏感性，在25°C和70°C之间显示出35.76 pm/°C的线性响应。电流测试显示出与施加电流的二次依赖关系：0.4-0.7 A时灵敏度达到4.912 nm/A2, 1.0-1.5 A时灵敏度增加到20.769 nm/A2，在更高电流下提高了4.2倍。该传感器具有高灵敏度，紧凑的设计，成本效益，强大的可重复性和稳定性。这些特性使其成为实际电流检测应用的有前途的解决方案。

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.