Feng, Fanbu, Chen, Mengmeng, Jin, Xiaoling, Xu, Enming, Jiang, Chen, Zhou, Kaiming, Sun, Bing and Zhang, Zuxing (2025). Ultrasensitive Magnetic Field Measurement Using Two-Mode Microfiber-Based Sensors. IEEE Transactions on Instrumentation and Measurement ,
Abstract
This study presents a novel fiber-optic magnetic field sensor that synergistically combines a microfiber structure with a developed fiber Bragg grating (FBG)-based interrogation system. The sensor harnesses a two-mode fiber with a precisely engineered ring-index distribution to effectively suppress higher-order modes, thereby establishing a uniform modal interferometer predominantly involving the HE11 and HE12 modes. Experimental investigations reveal that the sensor attains an exceptional sensitivity of up to 29.928 nm/mT, markedly out-performing earlier designs. Furthermore, the FBG interrogation system effectively mitigates temperature-induced cross-sensitivity, offering a low-cost, portable alternative for real-time magnetic field strength detection. This approach provides a significant advancement in measurement precision and compact instrumentation for magnetic field sensing, suitable for a wide range of field applications.
Publication DOI: | https://doi.org/10.1109/TIM.2025.3562988 |
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Divisions: | College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT) College of Engineering & Physical Sciences |
Funding Information: | This work was supported in part by the Science Foundation of Nanjing University of Posts and Telecommunications (NY222139), and in part by Marie Skłodowska-Curie Individual Fellowships in the European Union’s Horizon 2020 Research and Innovation Program u |
Additional Information: | Copyright © 2025 IEEE. All rights reserved, including rights for text and data mining and training of artificial intelligence and similar technologies. Personal use is permitted, but republication/redistribution requires IEEE permission. See https://www.ieee.org/publications/rights/index.html for more information. |
Uncontrolled Keywords: | Optical fiber sensors,Sensors,Optical fibers,Magnetic fields,Magnetic sensors,Magnetic liquids,Interference,Optical fiber dispersion,Optical fiber polarization,Refractive index |
Publication ISSN: | 1557-9662 |
Last Modified: | 01 May 2025 08:43 |
Date Deposited: | 24 Apr 2025 11:02 |
Full Text Link: | |
Related URLs: |
https://ieeexpl ... ument/10973098/
(Publisher URL) |
PURE Output Type: | Article |
Published Date: | 2025-04-22 |
Published Online Date: | 2025-04-22 |
Accepted Date: | 2025-04-01 |
Authors: |
Feng, Fanbu
Chen, Mengmeng Jin, Xiaoling Xu, Enming Jiang, Chen Zhou, Kaiming ( ![]() Sun, Bing Zhang, Zuxing |