Magnetic field sensing based on tilted fiber Bragg grating coated with nanoparticle magnetic fluid

被引：64
|
作者：
Yang, Dexing [1 ]
Du, Lei [1 ]
Xu, Zengqi [1 ]
Jiang, Yajun [1 ]
Xu, Jian [1 ]
Wang, Meirong [1 ]
Bai, Yang [1 ]
Wang, Haiyan [2 ]
机构：
[1] Northwestern Polytech Univ, Shaanxi Key Lab Opt Informat Technol, Sch Sci, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Sch Marine Technol, Xian 710072, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 06期
关键词：
REFRACTIVE-INDEX; SENSORS; TEMPERATURE; FILMS;
D O I：
10.1063/1.4864649
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A magnetic field sensor based on a tilted fiber Bragg grating (TFBG) coated with magnetic fluid is proposed and demonstrated experimentally. The sensing element is made by injecting the magnetic fluid into a capillary tube which contains a TFBG. The resonant wavelengths of the cladding modes of TFBG shift by varying the magnetic field which is perpendicular to the axis of TFBG. The results indicate that the resonant wavelength shifts of the cladding modes show a nonlinear dependence on the magnetic field. As the magnetic field increases to 32 mT, the largest resonant wavelength shift reaches to 106 pm. Moreover, this sensor shows good repeatability when it is used for magnetic field sensing. (C) 2014 AIP Publishing LLC.
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页数：3
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