Fiber-Optic Magnetic Field Sensor Based on Curved Terfenol-D Rod Combined With FBG
A kind of magnetic field sensor with enhanced sensitivity was designed by integrating the fiber Bragg gratings (FBGs) with the curved terbium-dysprosium-iron alloy (Terfenol-D) rods. Seven magnetic field sensors with Terfenol-D rods of different curvatures were fabricated and tested. The highest enhancement in magnetic field sensitivity is observed for sensors equipped with Terfenol-D rods having a curvature of 50 m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> . In addition, the designed sensor demonstrated directional sensitivity to the magnetic field, which was obtained to be 3.5 pm/deg at 10 mT. The utilization of magnetostrictive materials in unconventional shapes (magnetostrictive rods in curved shapes) in this study not only enhances magnetic field sensitivity but also opens up a world of possibilities for future specific applications.
Authors
- Shengli Pu
- Mahieddine Lahoubi (ORCID: https://orcid.org/0000-0001-5053-8800)
- Chencheng Zhang (ORCID: https://orcid.org/0000-0002-5138-5487)
- Tengfei Xu (ORCID: https://orcid.org/0009-0006-6200-2505)
- Weinan Liu (ORCID: https://orcid.org/0000-0002-8380-7533)
- Z. J. Yang (ORCID: https://orcid.org/0009-0006-3079-785X)
Institutions
- Badji Mokhtar-Annaba University (DZ)
- University of Shanghai for Science and Technology (CN)
Publication Details
- Journal
- IEEE Sensors Journal
- Published
- 2025-01-09
- DOI
- https://doi.org/10.1109/jsen.2025.3525539
- Citations
- 13
- Primary Topic
- Advanced Fiber Optic Sensors
- Type
- article
- Field-Weighted Citation Impact
- 9.50
Funders
- Natural Science Foundation of Shanghai
- National Natural Science Foundation of China
- Program of Shanghai Academic Research Leader