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Proceedings Paper

A novel miniature fiber optic magnetic field sensor based on Ampere force and dual-polarization fiber laser
Author(s): Zhenzhen Guo; Linghao Cheng; Jianlei Han; Bai-Ou Guan; Long Jin; Bin Chen; Xiao-Hui Lin
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Paper Abstract

A dual-polarization fiber grating laser is proposed to sense a magnetic field by attaching the fiber laser to a copper wire. When an electrical current is injected into the copper wire and a perpendicular magnetic field is applied, the current generates Ampere force to squeeze the fiber laser and change the birefringence inside the laser cavity, resulting in beat note frequency change. The magnetic field induced beat note frequency change can be discriminated from environment disturbances by applying an alternating current, which therefore demonstrates a novel miniature fiber-optic magnetic field sensor with high sensitivity and inherent immunity to disturbances.

Paper Details

Date Published: 15 October 2013
PDF: 4 pages
Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89240N (15 October 2013); doi: 10.1117/12.2031496
Show Author Affiliations
Zhenzhen Guo, Jinan Univ. (China)
Linghao Cheng, Jinan Univ. (China)
Jianlei Han, Jinan Univ. (China)
Bai-Ou Guan, Jinan Univ. (China)
Long Jin, Jinan Univ. (China)
Bin Chen, Shenzhen Univ. (China)
Xiao-Hui Lin, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 8924:
Fourth Asia Pacific Optical Sensors Conference
Minghong Yang; Dongning Wang; Yun-Jiang Rao, Editor(s)

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