A Highly Sensitive Magnetic Field Sensor Based on a Tapered Microfiber

Ma, Ze-Long; Miao, Yinping; Yi, Li; Zhang, Hongming; Li, Bin; Cao, Yanpeng; Yao, Jianquan

doi:10.1109/jphot.2018.2862949

Cited by 16 publications

(5 citation statements)

References 38 publications

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“…where n is the interference order, the RI of the MF in the micro-capillary can be modulated by an external magnetic field [32], based on the localized aggregation of MNPs discussed in Section 2.1, and then the ERI of the hybrid mode will be changed then n eff will be changed correspondingly.…”

Section: Fabrication and Sensing Principlementioning

confidence: 99%

Fiber-Optic Vector Magnetic Field Sensor Based on Mode Interference and Magnetic Fluid in a Two-Channel Tapered Structure

Tian

Song

Li³

et al. 2019

IEEE Photonics J.

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An innovative approach to high-sensitivity simultaneous intensity and direction measurement in a two-channel tapered sensor is proposed and demonstrated. The sensor is comprised of magnetic fluid (MF)-filled micro-capillary and two accompanying microfiber, thus enabling evanescent interaction to take place between the optical mode in the capillary and MF. Given the magnetic nanoparticles (MNPs) of MF manifest anisotropic magnetic field. Experimental and numerical simulations were performed simultaneously, which provided a better understanding of the interaction between light and MF in addition to clarifying the dynamic process of MNPs within MF with the assistance of varying magnetic field. The experimental results are well consistent with the numerical simulation results and show that the sensitivity of this sensor reaches up to 244 pm/mT, with the direction error being merely ±1.4°. Therefore, the proposed sensor exhibits a unique sensitivity for the measurement of magnetic field intensity and direction in 3D space, which makes it best suitable for applications in transportation, medicine, and smart device.

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Section: Fabrication and Sensing Principlementioning

confidence: 99%

Fiber-Optic Vector Magnetic Field Sensor Based on Mode Interference and Magnetic Fluid in a Two-Channel Tapered Structure

Tian

Song

Li³

et al. 2019

IEEE Photonics J.

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“…The interference can be either constructive or destructive, resulting in transmission peaks or dips over a wavelength range (Wu et al, 2020). Tapered optical fibers sensors based on multimode interference (Korposh et al, 2019) were used in different applications such as temperature sensing (Yadav et al, 2014), magnetic field sensing (Ma et al, 2018), gas detection (Singh and Ogita, 2003) and relative humidity sensing (Wang et al, 2011;Morais Jr. and Giraldi, 2019). Different taper profiles have been studied such as conical or linear, parabolic and exponential (Singh and Ogita, 2003;Vikas and Verma, 2018).…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Humidity Tapered Optical Fiber Sensor

Carvalho

Martinez

Giraldi

2022

Preprint

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Among different interferometric fiber optic sensors a Relative Humidity sensor based on a singlemode-no-core-singlemode tapered fiber structure is proposed. The mathematical model of the interferometer structure is developed, simulated and validated as a refractive index sensor. Different materials for coating the No-core fiber section are analyzed for better Relative Humidity sensitivity. Agarose, Porous Silica and SiO2 nanoparticles were selected as coating materials for Pure Silica and dPMMA fibers. The d-PMMA fiber with Agarose coating presents the highest average sensitivity of 533.46pm/RH% in the 0-60% RH range, when the tapered section has zero length. Furthermore, variations in the dimensions of the structure are explored showing that we can tune the sensitivity according to the tapered length and radius. An extension of the tapered section up to 4000µm gives an improvement of 227% in the average sensitivity. Moreover, a reduction of the tapered radius from 15µm to 1.5µm gives an rise in the sensitivity of 295%.

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“…Accurate measurements of the magnetic field are of scientific and industrial importance for many applications such as medicine, military, vehicle monitoring, and geological prospecting. In the last few decades, various types of magnetic field sensor are proposed and realized, for example, based on side-polished fibre 17 , cascaded microfibre coupler 18 , fibre ring cavity laser 19 , tapered microfibre 20 , and birefringence in liquid-core optical waveguide 21 . Recently, the plasma resonance effect is used in a twin-core PCF to realise the simultaneous measurement of magnetic field and temperature 22 .…”

Section: Introductionmentioning

confidence: 99%

Designing magnetic field sensor based on tapered photonic crystal fibre assisted by a ferrofluid

Taghizadeh

Bozorgzadeh

Ghorbani

2021

Sci Rep

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A novel magnetic field sensor is proposed based on the combination of in-line tapered photonic crystal fibre (PCF) Mach–Zehnder interferometer and magnetic nanoparticles. The sensor is theoretically investigated and experimentally realized. The effect of the mechanical strain and the magnetic field on the sensitivity of the sensor is studied. It is found that the proposed sensor shows a wavelength-sensitivity of $$-\,0.072\,\text {nm/mT}$$ - 0.072 nm/mT and a strain-sensitivity of $$1\,\text {pm/}\upmu \,\epsilon \,$$ 1 pm/ μ ϵ . To evaluate the effect of the magnetic nanoparticles on the output light intensity, the sensitivity response of the device has been measured under different magnetic field strengths for different length scales. The experimental results show refractive index changes of the magnetic nanoparticles-infiltrated PCF—acting as fibre cladding—under the applied magnetic field leads to variations of the interferometric output. The sensitivity of magnetic field measurement with the sensor with $$30\,\text {mm}$$ 30 mm and $$40\,\text {mm}$$ 40 mm PCF could reach up to $$0.021\,\text {dB/mT}$$ 0.021 dB/mT and $$0.017\,\text {dB/mT}$$ 0.017 dB/mT , respectively. The results show a very good linear response that is an essential requirement for the practical sensors. The proposed magnetic field sensor finds applications in various areas, such as optical sensing, military, power industry, and tunable photonic devices.

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A Highly Sensitive Magnetic Field Sensor Based on a Tapered Microfiber

Cited by 16 publications

References 38 publications

Fiber-Optic Vector Magnetic Field Sensor Based on Mode Interference and Magnetic Fluid in a Two-Channel Tapered Structure

Fiber-Optic Vector Magnetic Field Sensor Based on Mode Interference and Magnetic Fluid in a Two-Channel Tapered Structure

Performance Analysis of Humidity Tapered Optical Fiber Sensor

Designing magnetic field sensor based on tapered photonic crystal fibre assisted by a ferrofluid

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