U-bent single-mode–multimode–single-mode fiber optic magnetic field sensor based on magnetic fluid

Zhang, Rongxiang; Liu, Tiegen; Han, Qun; Chen, Yaofei; Li, Lin

doi:10.7567/apex.7.072501

Cited by 37 publications

(14 citation statements)

References 21 publications

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“…In [81], it is proposed a magnetic field sensor based on a single mode-multi mode-single mode (SMS) fiber structure, with a no-core fiber (NCF) sandwiched between two SMFs and coated with EMG 605 MF. The performance of the straight sensor was compared with the case where the NCF with a diameter of 61.5 μm is U-bent, being the curvature radius of 2.5 cm.…”

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

149

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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

149

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“…However, the region of sensor linearity was limited to the range 4 to 10 mT and the insertion loss was 9.7 dB at a wavelength of 1560 nm. In the following year these researchers expanded on this work by performing a comparative study of a straight and U-shaped NCF between two SMFs [26]. By bending the NCF to increase the penetration depth of the evanescent field they increased the sensitivity to 3185 pm/mT, which was over 4 times the sensitivity of a straight NCF sensor.…”

Section: B Fiber-gap Optofluidic Magnetic Field Sensorsmentioning

confidence: 99%

A Review of Single-Mode Fiber Optofluidics

Blue

Dudus

Uttamchandani

2016

IEEE J. Select. Topics Quantum Electron.

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We review the field we describe as "single-mode fiber optofluidics" which combines the technologies of microfluidics with single-mode fiber optics for delivering new implementations of well-known single-mode optical fiber devices. The ability of a fluid to be easily shaped to different geometries plus the ability to have its optical properties easily changed via concentration changes or an applied electrical or magnetic field offers potential benefits such as no mechanical moving parts, miniaturization, increased sensitivity and lower costs. However, device fabrication and operation can be more complex than in established singlemode fiber optic devices. . Her research areas include optofluidic devices and applications.Deepak Uttamchandani (SM'05) received his PhD degree from University College London, London, UK in 1985 for research in the areas of optical fiber sensors and optical frequency domain reflectometry. He is currently the Head of the Centre for Microsystems and Photonics, University of Strathclyde, Glasgow, UK. His early research in MEMS concentrated on opto-thermal microresonator sensors and in investigating techniques for MEMS material characterization using micromechanical resonators. His recent research has concentrated on system applications of optical MEMS including intra-cavity MEMS-based laser systems, MEMS-based directional microphones and MEMS-based single-pixel imaging systems. He has also published in the fields of optofluidic devices, optical sensors, including sub-wavelength tipbased Raman spectroscopy, and in situ intraocular drug detection systems via optical spectroscopy in the eye. In 2014 he organized and chaired the IEEE Optical MEMS and Nanophotonics conference (Glasgow, UK)..

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“…Using the tunable refractive index property, multimode fibers have been used as modal interferometers, where lower-order modes interfere with higher-order modes whose propagation constant is affected by the ferrofluid that covers the fiber [5]. To increase the evanescent interaction with the surrounding ferrofluid and, consequently, the sensitivity, other methods, such as bending of multimode fibers [6], tapering [7] or the use of D-shaped fibers [8] have been adopted. Extrinsic fiber-based Fabry-Pérot interferometers have also been constructed by axially aligning two optical fibers and leaving a gap between them, which is filled with a magnetic fluid [9].…”

Section: Introductionmentioning

confidence: 99%

Magnetic field sensors in fused silica fabricated by femtosecond laser micromachining

et al. 2020

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Based on the characteristics of ferrofluids, a monolithic optofluidic device for magnetic field sensing is proposed and demonstrated. The device consists of a Fabry-Pérot interferometer, composed by an optical waveguide orthogonal to a microfluidic channel, which was fabricated inside a fused silica substrate through femtosecond laser micromachining. The interferometer was first optimized by studying the influence of the waveguide writing parameters on its spectral properties. Waveguides written at higher pulse energies led to a decrease of the signal-to-noise ratio, due to an enhancement of micrometer sized defects associated with Mie scattering. Fringe visibility was also maximized for waveguides written at lower scanning speeds. Making use of the tunable refractive index property exhibited by magnetic fluids, the interferometer was then tested as a magnetic field sensor by injecting a ferrofluid inside the microfluidic channel. A linear sensitivity of −0.25 nm/mT was obtained in the 9.0-30.5 mT range with the external field parallel to the waveguide axis.

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U-bent single-mode–multimode–single-mode fiber optic magnetic field sensor based on magnetic fluid

Cited by 37 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

A Review of Single-Mode Fiber Optofluidics

Magnetic field sensors in fused silica fabricated by femtosecond laser micromachining

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