Magnetic field sensor using tilted fiber grating interacting with magnetic fluid

Magnetic field sensor using tilted fiber grating interacting with magnetic fluid

A novel magnetic field sensor using tilted fiber Bragg grating (TFBG) interacting with magnetic fluid is proposed and experimentally demonstrated. The TFBG is surrounded by magnetic fluid whose complex refractive index changes with external magnetic field. The guiding properties of cladding modes ex...

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Bibliographic Details
Main Authors: Zheng, Jie, Dong, Xinyong, Zu, Peng, Shao, Li-Yang, Chan, Chi Chiu, Cui, Ying, Shum, Perry Ping
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/98154
http://hdl.handle.net/10220/13314
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Institution: Nanyang Technological University
Language: English
Description
Summary:A novel magnetic field sensor using tilted fiber Bragg grating (TFBG) interacting with magnetic fluid is proposed and experimentally demonstrated. The TFBG is surrounded by magnetic fluid whose complex refractive index changes with external magnetic field. The guiding properties of cladding modes excited by the TFBG are therefore modulated by the external magnetic field. As a result, the magnetic field strength measurement is successfully achieved within a range up to 196 Gauss by monitoring extinction ratio of cladding mode resonance. Furthermore, temperature variation can be obtained simultaneously from the wavelength shift of the TFBG transmission spectrum.

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