A novel miniature fiber optic magnetic field sensor based on Ampere force and dual-polarization fiber laser

Zhenzhen Guo; Linghao Cheng; Jianlei Han; Bai-Ou Guan; Long Jin; Bin Chen; Xiao-Hui Lin

doi:10.1117/12.2031496

15 October 2013 A novel miniature fiber optic magnetic field sensor based on Ampere force and dual-polarization fiber laser

Zhenzhen Guo, Linghao Cheng, Jianlei Han, Bai-Ou Guan, Long Jin, Bin Chen, Xiao-Hui Lin

Author Affiliations +

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 89240N (2013) https://doi.org/10.1117/12.2031496
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

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.

Citation Download Citation

Zhenzhen Guo, Linghao Cheng, Jianlei Han, Bai-Ou Guan, Long Jin, Bin Chen, and Xiao-Hui Lin "A novel miniature fiber optic magnetic field sensor based on Ampere force and dual-polarization fiber laser", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89240N (15 October 2013); https://doi.org/10.1117/12.2031496

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