Magnetic field sensing based on fiber loop ring-down spectroscopy and etched fiber interacting with magnetic fluid

Wang, Qi; Liu, Xu; Zhao, Yong; Lv, Ri-qing; Hu, Haifeng; Jin, Li

doi:10.1016/j.optcom.2015.08.043

Cited by 33 publications

(12 citation statements)

References 21 publications

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“…Wang et al developed a magnetic field sensor based on a fiber loop ring-down spectroscopy (FLRDS) and etched fiber (cladding diameter of 18.83 μm) interacting with EMG 507 MF [78]. Both the magnetic tunable refractive index and absorption coefficient transmission properties of the MF were simultaneously considered, and the transmission spectrum is modulated by the FLRDS, which improves significantly the sensitivity and the anti-interference.…”

Section: Other Sensing Schemes Based Sensorsmentioning

confidence: 99%

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

Alberto

Domingues

Marques

et al. 2018

Sensors

137

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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.

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Section: Other Sensing Schemes Based Sensorsmentioning

confidence: 99%

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

Alberto

Domingues

Marques

et al. 2018

Sensors

137

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“…From the results we can see that the ring-down time decreases monotonically with the increase of H. As a whole, the data exhibit a nonlinear relationship and can be fairly well fitted with a cubic polynomial. In the subrange from 0 to 80 Oe, it has good linearity (adjusted R 2 0.982) with a slope (or sensitivity) of −0.5951 μs∕Oe, which is higher than the 0.0796 μs/Oe (the reciprocal of 12.56 Oe/μs) in [12] and the 0.0096 μs/Oe in [13].…”

Section: B Measurements Based On the Flrd Techniquementioning

confidence: 96%

“…Integrated with various sensing heads, FLRD can realize measurements of different parameters, including refractive index of liquids [3][4][5][6], pressure [7,8], curvature [9], macro-bend loss of single-mode fiber (SMF) [10], and the concentration of gas [11]. In particular, by coating a piece of etched SMF with magnetic fluid (MF), a kind of liquid nanomaterial with outstanding magneto-optical effects, magnetic field sensing based on the FLRD technique was recently demonstrated by Wang et al [12] and Shen et al [13]. The introduction of the FLRD technique significantly enhances the sensitivity and stability when comparing with the conventional intensity-interrogated magnetic field sensors based on MF and various fiber structures, for example uptaper joints [14], thin-core fibers [15], multimode interferometers [16], and photonic crystal fiber [17].…”

Section: Introductionmentioning

confidence: 99%

“…However, in [12,13], to enable evanescent field interaction with the surrounding MF, part of the SMF cladding was removed by HF etching, which increases the difficulty of fabrication. In our previous work, we reported a simple way to enable evanescent field interaction with the surrounding medium by mechanically bending an SMF, demonstrating an intensity-interrogated magnetic field sensor composed of a piece MF-coated U-bent SMF [18].…”

Section: Introductionmentioning

confidence: 99%

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Fiber loop ring-down cavity integrated U-bent single-mode-fiber for magnetic field sensing

et al. 2016

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A novel magnetic field sensing system based on the fiber loop ring-down technique is proposed in this paper. In the fiber loop, a U-bent single-mode-fiber structure coated with magnetic fluid (MF) serves as the sensing head, and an erbium-doped fiber amplifier (EDFA) is introduced to compensate for the intrinsic loss of the cavity. The ring-down time of the system varies with the change of applied magnetic field due to the tunable absorption coefficient and refractive index of the MF. Therefore, measurement of the magnetic field can be realized by monitoring the ringdown time. The experimental results show that the performance of the system is extremely dependent on the interrogation wavelength, because both the gain of the EDFA and the loss of the sensing head are wavelength dependent. We found that at the optimal wavelength, the ratio of the gain to loss attained its maximum. The sensing system was experimentally demonstrated and a sensitivity of −0.5951 μs∕Oe was achieved.

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“…Nevertheless, in recent years, nanoparticles with special magnetic properties have been studied. These nanoparticles, merged with a liquid, provide a magnetic fluid that, combined with fiber optic structures, generate a magnetic fiber optic sensor; these structures are tapered optical fibers [ 7 , 8 , 9 , 10 , 11 , 12 , 13 ], FPIs [ 5 , 14 , 15 , 16 , 17 , 18 ], ring fiber lasers [ 19 , 20 , 21 ], fiber Bragg gratings [ 22 , 23 , 24 , 25 , 26 ], multi-mode interferometers [ 27 ], core-offset interferometers [ 28 ], long period gratings [ 29 , 30 ], and filled fiber structures [ 31 , 32 ]. As can be appreciated, the magnetic optical fiber sensors are strongly related to the material involved, many of them are expensive or not commercially available.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Field Sensing Based on Bi-Tapered Optical Fibers Using Spectral Phase Analysis

Herrera-Piad

Haus

Jáuregui-Vázquez

et al. 2017

Sensors

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A compact, magnetic field sensor system based on a short, bi-tapered optical fiber (BTOF) span lying on a magnetic tape was designed, fabricated, and characterized. We monitored the transmission spectrum from a broadband light source, which displayed a strong interference signal. After data collection, we applied a phase analysis of the interference optical spectrum. We here report the results on two fabricated, BTOFs with different interference spectrum characteristics; we analyzed the signal based on the interference between a high-order modal component and the core fiber mode. The sensor exhibited a linear response for magnetic field increments, and we achieved a phase sensitivity of around 0.28 rad/mT. The sensing setup presented remote sensing operation and low-cost transducer magnetic material.

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Magnetic field sensing based on fiber loop ring-down spectroscopy and etched fiber interacting with magnetic fluid

Cited by 33 publications

References 21 publications

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

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

Fiber loop ring-down cavity integrated U-bent single-mode-fiber for magnetic field sensing

Magnetic Field Sensing Based on Bi-Tapered Optical Fibers Using Spectral Phase Analysis

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