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ORIGINAL RESEARCH article

Front. Phys.
Sec. Optics and Photonics
Volume 13 - 2025 | doi: 10.3389/fphy.2025.1539959
This article is part of the Research Topic Advanced Methods in Exploring Light-Matter Interactions and Their Applications View all 5 articles

Dual Hollow Sphere Optical Resonator for Simultaneous Detection of Acoustic and Magnetic Fields

Provisionally accepted
Chaoyu Feng Chaoyu Feng 1Changqiu Yu Changqiu Yu 2*Yuchi Hu Yuchi Hu 2Jian Chang Jian Chang 1Pei Hou Pei Hou 1Hai Li Hai Li 2
  • 1 Ultra high voltage company of stats grid shaanxi electric power co. ltd, Xi an, China
  • 2 Hangzhou Dianzi University, Hangzhou, China

The final, formatted version of the article will be published soon.

    This study introduces a novel dual-parameter sensor for simultaneous acoustic and magnetic field detection. The sensor employs a dual-hollow-sphere-shaped optical microresonator coupled with a fiber taper and integrated with a Terfenol-D sheet. Experimental results demonstrate best sensitivities of 4.24 mPa/√Hz for acoustics and 5.16 nT/√Hz for magnetic fields within a 0.1 to 2 MHz detection range. Notably, the sensor can detect both parameters independently at different frequencies without mutual interference. This innovative design offers a promising approach for non-destructive testing of the state of the high-voltage transmission lines.

    Keywords: Electromagnetic detection, Acoustic sensing, Multi-parameter, Optical microresonator, microsphere

    Received: 05 Dec 2024; Accepted: 06 Jan 2025.

    Copyright: © 2025 Feng, Yu, Hu, Chang, Hou and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Changqiu Yu, Hangzhou Dianzi University, Hangzhou, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.