A Giant Magneto-Strictive Material-Based Fabry–Perot Interferometer-Type 3D Vector Magnetic Field Sensor.
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| Title: | A Giant Magneto-Strictive Material-Based Fabry–Perot Interferometer-Type 3D Vector Magnetic Field Sensor. |
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| Authors: | Yu, Ze1 (AUTHOR), Liu, Dongran2 (AUTHOR), Su, Chunbo1,2 (AUTHOR), Qiao, Yingjie1,2 (AUTHOR), Wang, Xiaodong1 (AUTHOR) wangxiaodong@hrbeu.edu.cn, Geng, Tao2 (AUTHOR) gengtao_hit_oe@126.com |
| Source: | Nanomaterials (2079-4991). Mar2026, Vol. 16 Issue 5, p323. 13p. |
| Subjects: | Fabry-Perot interferometers, Magnetostriction, Magnetic field measurements, Strain sensors, Carbon dioxide lasers, Magnetic sensors, Optical fiber detectors |
| Abstract: | This paper presents the design and experimental validation of a highly sensitive vector magnetic field sensor based on three mutually orthogonal Fabry–Perot interferometers (FPIs). The orthogonally arranged FPIs are bonded to a giant magneto-strictive material (GMM) block. Under an applied magnetic field, the magneto-strictively induced strain in the GMM block is transferred to the FPIs. Meanwhile, the FPIs, composed of single-mode fiber (SMF)–hollow-core fiber (HCF)–SMF, are further modulated by CO2 laser, by which the higher sensitivities are obtained. The highest sensitivities of FPIs achieved 245.13, 159.06, and 168.59 pm/mT on the X-Y, X-Z, and Y-Z planes, respectively. By demodulating the distinct wavelength drifts of the three orthogonal FPIs, both the magnitude and direction of the magnetic field can be simultaneously determined. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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