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Sensors 2018, 18(12), 4325; https://doi.org/10.3390/s18124325 (registering DOI)

Optical Fiber Magnetic Field Sensors Based on Magnetic Fluid: A Review

1
Instituto de Telecomunicações, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
2
Department of Physics & I3N, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
3
Department of Electrical and Computer Engineering and Instituto de Telecomunicações, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
*
Author to whom correspondence should be addressed.
Received: 30 October 2018 / Revised: 4 December 2018 / Accepted: 5 December 2018 / Published: 7 December 2018
(This article belongs to the Special Issue Magnetic Sensors)
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Abstract

Magnetic field sensing is an important issue for many application areas, such as in the military, industry and navigation. The current sensors used to monitor this parameter can be susceptible to electromagnetic interferences, however due to their advantages over the traditional sensors, the optical fiber devices could be an excellent alternative. Furthermore, magnetic fluid (MF) is a new type of functional material which possesses outstanding properties, including Faraday effect, birefringence, tunable refractive index and field dependent transmission. In this paper, the optical fiber magnetic field sensors using MF as sensing element are reviewed. Due to the extensive literature, only the most used sensing configurations are addressed and discussed, which include optical fiber grating, interferometry, surface plasmon resonance (SPR) and other schemes involving tailored (etched, tapered and U-shaped) fibers. View Full-Text
Keywords: optical fiber sensors; magnetic field; magnetic fluid; fiber grating; interferometric sensor; surface plasmon resonance (SPR); tailored fibers optical fiber sensors; magnetic field; magnetic fluid; fiber grating; interferometric sensor; surface plasmon resonance (SPR); tailored fibers
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Alberto, N.; Domingues, M.F.; Marques, C.; André, P.; Antunes, P. Optical Fiber Magnetic Field Sensors Based on Magnetic Fluid: A Review. Sensors 2018, 18, 4325.

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