期刊
APPLIED PHYSICS LETTERS
卷 104, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4864649
关键词
-
资金
- Project of Innovation Foundation of Northwestern Polytechnical University [2012KJ01005]
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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