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Proceedings Paper

Heterodyning fiber laser based magnetic field sensor using magnetostrictive composite material
Author(s): Wei He; Linghao Cheng; Qiang Yuan; Yizhi Liang; Long Jin; Bai-Ou Guan
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Paper Abstract

A novel fiber-optic magnetic field sensor is proposed by embedding a heterodyning fiber laser into an epoxy resin bonded magnetostrictive composite material with Terfenol-D particles doped. The magnetic field induced strain in the magnetostrictive composite material is converted to transversal stress by a structure which is applied to the fiber laser to produce beat note frequency changes for measurement. The response of the proposed sensor is measured, which shows a quite good directivity with a sensitivity of 10.5 Hz/μT to magnetic field and a large measurable range up to about 0.3 T.

Paper Details

Date Published: 1 July 2015
PDF: 4 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96552D (1 July 2015); doi: 10.1117/12.2184138
Show Author Affiliations
Wei He, Jinan Univ. (China)
Linghao Cheng, Jinan Univ. (China)
Qiang Yuan, Jinan Univ. (China)
Yizhi Liang, Jinan Univ. (China)
Long Jin, Jinan Univ. (China)
Bai-Ou Guan, Jinan Univ. (China)

Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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