Side-polished fiber Bragg grating refractive index sensor with TbFeCo magnetoptic thin film

Fiber Bragg grating (FBG) is side-polished to enable interaction with sensitive materials around FBG fiber core. Using TbFeCo magneto-optic thin film deposited onto FBG fiber core as transducer, a FBG refractive index senor for magnetic field/current characterization is first proposed and demonstrated in this paper. Magnetic field sensing experiments show 19 pm of wavelength shift at a magnetic field intensity of 50 mT, the average linearity of magnetic field response is 0.9877.

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

[2]  D. G. Lord,et al.  Magnetostriction in TbDyFe thin films , 1994 .

[3]  Reginald K. Lee,et al.  Highly sensitive fiber Bragg grating refractive index sensors , 2005 .

[4]  Zhe Chen,et al.  Design of electrode for thermo-optic variable optical attenuator based on side polished fiber , 2009, International Conference on Optical Instruments and Technology.

[5]  S Huang,et al.  Bragg intragrating structural sensing. , 1995, Applied optics.

[6]  Minghong Yang,et al.  Optical fiber magnetic field sensors with TbDyFe magnetostrictive thin films as sensing materials. , 2009, Optics express.

[7]  Takeshi Ogasawara,et al.  Submicron-scale spatial feature of ultrafast photoinduced magnetization reversal in TbFeCo thin film , 2009 .

[8]  Gábor Vértesy,et al.  Improving the sensitivity of Fluxset magnetometer by processing of the sensor core , 1999 .

[9]  M. Mansuripur,et al.  Oblique sputtering of amorphous TbFeCo thin films on glass substrates and the effect of deposition angle on perpendicular magnetic anisotropy , 1997 .

[10]  H. Sakurai,et al.  Perpendicular magnetic anisotropy in TbFeCo films studied by magnetic Compton scattering , 2007 .

[11]  N. Tiercelin,et al.  Enhanced magnetoelectric effect in nanostructured magnetostrictive thin film resonant actuator with field induced spin reorientation transition , 2008 .

[12]  Weiwei Lin,et al.  Antiferromagnetic coupling and perpendicular anisotropy in TbFeCo∕NiO multilayers , 2005 .

[13]  J. A. García-Souto,et al.  High resolution (<1nm) interferometric fiber-optic sensor of vibrations in high-power transformers. , 2006, Optics express.

[14]  L. Pust,et al.  Preparation of cobalt doped nickel ferrite thin films on optical fibers by dip-coating technique , 1995 .

[15]  M. Sedlář.  The preparation and magnetic properties of sodium-modified iron oxide thin films by a solgel method , 1994 .

[16]  D Moodie,et al.  Fiber-optic refractometer that utilizes multimode waveguide overlay devices. , 1992, Optics letters.

[17]  Eckhard Quandt,et al.  Giant magnetostrictive thin films for applications in microelectromechanical systems (invited) , 2000 .