Fiber grating laser current sensor based on magnetic force

Bai-Ou Guan; Shi-Ning Wang

doi:10.1117/12.834979

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5 October 2009 Fiber grating laser current sensor based on magnetic force

Bai-Ou Guan, Shi-Ning Wang

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Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75033V (2009) https://doi.org/10.1117/12.834979
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

A novel fiber optic current sensor based on magnet force is proposed and experimentally demonstrated. A permanent magnet exerts transversal force to a dual polarization fiber grating laser due to the action of the magnet field of electric current. The transversal force modulates the fiber birefringence and therefore the polarization mode beat frequency of the fiber grating laser. The beat frequency changes linearly in response to the electric current.

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Bai-Ou Guan and Shi-Ning Wang "Fiber grating laser current sensor based on magnetic force", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033V (5 October 2009); https://doi.org/10.1117/12.834979

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