Ultrasensitive Magnetic Field Measurement Using Two-Mode Microfiber-Based Sensors

Fanbu Feng; Mengmeng Chen; Xiaoling Jin; Enming Xu; Chen Jiang; Kaiming Zhou; Bing Sun; Zuxing Zhang

doi:10.1109/TIM.2025.3562988

Ultrasensitive Magnetic Field Measurement Using Two-Mode Microfiber-Based Sensors

Fanbu Feng, Mengmeng Chen, Xiaoling Jin, Enming Xu, Chen Jiang, Kaiming Zhou, Bing Sun, Zuxing Zhang

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	7007906
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	74
Early online date	22 Apr 2025
DOIs	https://doi.org/10.1109/TIM.2025.3562988
Publication status	Published - 22 Apr 2025

Bibliographical note

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.

Keywords

Optical fiber sensors
Sensors
Optical fibers
Magnetic fields
Magnetic sensors
Magnetic liquids
Interference
Optical fiber dispersion
Optical fiber polarization
Refractive index

Access to Document

10.1109/TIM.2025.3562988

Cite this

@article{59e3f2b19c2d4ba3928328fec128da28,

title = "Ultrasensitive Magnetic Field Measurement Using Two-Mode Microfiber-Based Sensors",

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.",

keywords = "Optical fiber sensors, Sensors, Optical fibers, Magnetic fields, Magnetic sensors, Magnetic liquids, Interference, Optical fiber dispersion, Optical fiber polarization, Refractive index",

author = "Fanbu Feng and Mengmeng Chen and Xiaoling Jin and Enming Xu and Chen Jiang and Kaiming Zhou and Bing Sun and Zuxing Zhang",

note = "Copyright {\textcopyright} 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.",

year = "2025",

month = apr,

day = "22",

doi = "10.1109/TIM.2025.3562988",

language = "English",

volume = "74",

journal = "IEEE Transactions on Instrumentation and Measurement",

issn = "1557-9662",

publisher = "IEEE",

}

TY - JOUR

T1 - Ultrasensitive Magnetic Field Measurement Using Two-Mode Microfiber-Based Sensors

AU - Feng, Fanbu

AU - Chen, Mengmeng

AU - Jin, Xiaoling

AU - Xu, Enming

AU - Jiang, Chen

AU - Zhou, Kaiming

AU - Sun, Bing

AU - Zhang, Zuxing

N1 - 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.

PY - 2025/4/22

Y1 - 2025/4/22

N2 - 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.

AB - 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.

KW - Optical fiber sensors

KW - Sensors

KW - Optical fibers

KW - Magnetic fields

KW - Magnetic sensors

KW - Magnetic liquids

KW - Interference

KW - Optical fiber dispersion

KW - Optical fiber polarization

KW - Refractive index

UR - https://ieeexplore.ieee.org/document/10973098/

UR - http://www.scopus.com/inward/record.url?scp=105003383188&partnerID=8YFLogxK

U2 - 10.1109/TIM.2025.3562988

DO - 10.1109/TIM.2025.3562988

M3 - Article

SN - 1557-9662

VL - 74

JO - IEEE Transactions on Instrumentation and Measurement

JF - IEEE Transactions on Instrumentation and Measurement

M1 - 7007906

ER -

Ultrasensitive Magnetic Field Measurement Using Two-Mode Microfiber-Based Sensors

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Embargoed Document

Fingerprint

Cite this