Rapid and sensitive magnetic field sensor based on photonic crystal fiber with magnetic fluid infiltrated nanoholes

被引：22
作者：
Azad, Saeed [1 ,4 ]
Mishra, Satyendra Kumar [2 ]
Rezaei, Ghasem [3 ]
Izquierdo, Ricardo [1 ,4 ]
Ung, Bora [1 ,4 ]
机构：
[1] Ecole Technol Super, Dept Elect Engn, Montreal, PQ H3C 1K3, Canada
[2] Univ Laval, Ctr Opt Photon & Lasers COPL, Quebec City, PQ G1V 0A6, Canada
[3] Univ Yasuj, Coll Sci, Dept Phys, Yasuj 7591874934, Iran
[4] LACIME, Dept Elect Engn, Montreal, PQ H3C 1K3, Canada
来源：
SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期
关键词：
FERROFLUIDS; LIGHT;
D O I：
10.1038/s41598-022-13873-z
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A fast response time (0.1 s) magnetic field sensor has been demonstrated utilizing a photonic crystal fiber with nano-size air holes infiltrated with polyethylene glycol based magnetic fluid. The effect of magnetic nanoparticles concentration in the fluid on the magneto-optical sensor performance and its dependence under varying magnetic-field loads was investigated in detail. In particular, the sensor response was analytically modelled with a Langevin function with a good fit (R >= 0.996). A threshold sensing point as low as 20 gauss was recorded and a detection range of 0-350 gauss was demonstrated by means of optical transmission measurements. The experimental results were validated by theory using a waveguide light transmission model fed by finite-element method simulations of the principal guided modes in the infiltrated fiber sensor. The simple interrogation scheme, high sensitivity and quick response time makes the proposed hybrid fiber-optic magneto-fluidic probe a promising platform for novel biochemical sensing applications.
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页数：8
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