论文信息 - Magnetic field sensor based on magnetic fluid with side-polished fiber Bragg grating

Magnetic field sensor based on magnetic fluid with side-polished fiber Bragg grating

A novel optical fiber magnetic sensor based on magnetic fluid is proposed in this paper. Stable nano-particle CoFe2O4magnetic fluid was synthesized firstly; the CoFe2O4 magnetic fluid was injected in capillaries containing side-polished fiber Bragg grating (SPFBG) as sensing element. The reflected Bragg wavelength was changed by varying the magnetic field which is perpendicular to the axial of SPFBG. Magnetic field sensing experiment show that 35pm of wavelength shift at a magnetic field intensity of 16mT.

Minghong Yang | Jixiang Dai

[1] S S Orlov,et al. Coupled-mode analysis of fiber-optic add drop filters for dense wavelength-division multiplexing. , 1997, Optics letters.

[2] Satoshi Ishizuka,et al. Optical magnetic field sensors with high linearity using Bi-substituted rare earth iron garnets , 1995 .

[3] Shieh-Yueh Yang,et al. Control parameters for the tunable refractive index of magnetic fluid films , 2003 .

[4] Lai Qiong Yu,et al. Study of preparation and properties on magnetization and stability for ferromagnetic fluids , 2000 .

[5] A. Mailfert,et al. Dielectric behaviour of a ferrofluid subjected to a uniform magnetic field , 1980 .

[6] Xinwan Li,et al. Tunable magneto-optical wavelength filter of long-period fiber grating with magnetic fluids , 2007 .

[7] J. Mora,et al. A magnetostrictive sensor interrogated by fiber gratings for DC-current and temperature discrimination , 2000, IEEE Photonics Technology Letters.

[8] R. T. Rakowski,et al. A novel magneto-optic ferrofluid material for sensor applications , 2005 .

[9] A. Cusano,et al. Thinned fiber Bragg gratings as high sensitivity refractive index sensor , 2004, IEEE Photonics Technology Letters.