Plasmonic fiber-optic vector magnetometer

Zhaochuan Zhang; Tuan Guo; Xuejun Zhang; Jian Xu; Wenping Xie; Ming Nie; Qiang Wu; Baiou Guan; Jacques Albert

doi:10.1063/1.4943623

Plasmonic fiber-optic vector magnetometer

Zhaochuan Zhang, Tuan Guo, Xuejun Zhang, Jian Xu, Wenping Xie, Ming Nie, Qiang Wu, Baiou Guan, Jacques Albert

Mathematics, Physics and Electrical Engineering

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Abstract

A compact fiber-optic vector magnetometer based on directional scattering between polarized plasmon waves and ferro-magnetic nanoparticles is demonstrated. The sensor configuration reported in this work uses a short section of tilted fiber Bragg grating (TFBG) coated with a nanometer scale gold film and packaged with a magnetic fluid (Fe3O4) inside a capillary. The transmission spectrum of the sensor provides a fine comb of narrowband resonances that overlap with a broader absorption of the surface plasmonresonance (SPR). The wavelength of the SPR attenuation in transmission shows high sensitivity to slight perturbations by magnetic fields, due to the strong directional scattering between the SPR attenuated cladding modes and the magnetic fluid near the fiber surface. Both the orientation (2 nm/deg) and the intensity (1.8 nm/mT) of magnetic fields can be determined unambiguously from the TFBG spectrum. Temperature cross sensitivity can be referenced out by monitoring the wavelength of the core mode resonance simultaneously.

Original language	English
Pages (from-to)	101105
Journal	Applied Physics Letters
Volume	108
Issue number	10
Early online date	7 Mar 2016
DOIs	https://doi.org/10.1063/1.4943623
Publication status	Published - 10 Mar 2016

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title = "Plasmonic fiber-optic vector magnetometer",

abstract = "A compact fiber-optic vector magnetometer based on directional scattering between polarized plasmon waves and ferro-magnetic nanoparticles is demonstrated. The sensor configuration reported in this work uses a short section of tilted fiber Bragg grating (TFBG) coated with a nanometer scale gold film and packaged with a magnetic fluid (Fe3O4) inside a capillary. The transmission spectrum of the sensor provides a fine comb of narrowband resonances that overlap with a broader absorption of the surface plasmonresonance (SPR). The wavelength of the SPR attenuation in transmission shows high sensitivity to slight perturbations by magnetic fields, due to the strong directional scattering between the SPR attenuated cladding modes and the magnetic fluid near the fiber surface. Both the orientation (2 nm/deg) and the intensity (1.8 nm/mT) of magnetic fields can be determined unambiguously from the TFBG spectrum. Temperature cross sensitivity can be referenced out by monitoring the wavelength of the core mode resonance simultaneously.",

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T1 - Plasmonic fiber-optic vector magnetometer

AU - Zhang, Zhaochuan

AU - Guo, Tuan

AU - Zhang, Xuejun

AU - Xu, Jian

AU - Xie, Wenping

AU - Nie, Ming

AU - Wu, Qiang

AU - Guan, Baiou

AU - Albert, Jacques

PY - 2016/3/10

Y1 - 2016/3/10

N2 - A compact fiber-optic vector magnetometer based on directional scattering between polarized plasmon waves and ferro-magnetic nanoparticles is demonstrated. The sensor configuration reported in this work uses a short section of tilted fiber Bragg grating (TFBG) coated with a nanometer scale gold film and packaged with a magnetic fluid (Fe3O4) inside a capillary. The transmission spectrum of the sensor provides a fine comb of narrowband resonances that overlap with a broader absorption of the surface plasmonresonance (SPR). The wavelength of the SPR attenuation in transmission shows high sensitivity to slight perturbations by magnetic fields, due to the strong directional scattering between the SPR attenuated cladding modes and the magnetic fluid near the fiber surface. Both the orientation (2 nm/deg) and the intensity (1.8 nm/mT) of magnetic fields can be determined unambiguously from the TFBG spectrum. Temperature cross sensitivity can be referenced out by monitoring the wavelength of the core mode resonance simultaneously.

AB - A compact fiber-optic vector magnetometer based on directional scattering between polarized plasmon waves and ferro-magnetic nanoparticles is demonstrated. The sensor configuration reported in this work uses a short section of tilted fiber Bragg grating (TFBG) coated with a nanometer scale gold film and packaged with a magnetic fluid (Fe3O4) inside a capillary. The transmission spectrum of the sensor provides a fine comb of narrowband resonances that overlap with a broader absorption of the surface plasmonresonance (SPR). The wavelength of the SPR attenuation in transmission shows high sensitivity to slight perturbations by magnetic fields, due to the strong directional scattering between the SPR attenuated cladding modes and the magnetic fluid near the fiber surface. Both the orientation (2 nm/deg) and the intensity (1.8 nm/mT) of magnetic fields can be determined unambiguously from the TFBG spectrum. Temperature cross sensitivity can be referenced out by monitoring the wavelength of the core mode resonance simultaneously.

U2 - 10.1063/1.4943623

DO - 10.1063/1.4943623

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VL - 108

SP - 101105

JO - Applied Physics Letters

JF - Applied Physics Letters

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Plasmonic fiber-optic vector magnetometer

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