Intensity-modulated magnetic field sensor based on magnetic fluid and optical fiber gratings

An intensity-modulated magnetic field sensor based on magnetic fluid and optical fiber gratings is proposed and experimentally demonstrated. The sensor is formed by a tilted-fiber Bragg grating (TFBG) coated by magnetic fluid (MF) and cascaded by a chirped-fiber Bragg grating (CFBG). Transmission of the TFBG is modulated by refractive index of the MF, which is sensitive to external magnetic field. The CFBG is well designed to reflect a broadband of light spectrally located at the cladding mode resonances region of the TFBG. Therefore, reflected optical power is modulated twice by the magnetic field and measurement is realized in reflection manner.

[1]  Qida Zhao,et al.  Refractive index sensor based on measuring the transmission power of tilted fiber Bragg grating , 2009 .

[2]  Johann Nicolics,et al.  Magneto-optical current sensor by domain wall motion in orthoferrites , 2000, IEEE Trans. Instrum. Meas..

[3]  Minghong Yang,et al.  Magnetic field sensor based on magnetic fluid clad etched fiber Bragg grating , 2011 .

[4]  Jacques Albert,et al.  Anomalous permittivity and plasmon resonances of copper nanoparticle conformal coatings on optical fibers , 2011 .

[5]  Wenjun Zhou,et al.  Polarization-dependent properties of the cladding modes of a single mode fiber covered with gold nanoparticles. , 2013, Optics express.

[6]  Shieh-Yueh Yang,et al.  Thermal effect on the field-dependent refractive index of the magnetic fluid film , 2003 .

[7]  Hao Zhang,et al.  Two-Dimensional Magnetic Field Vector Sensor Based on Tilted Fiber Bragg Grating and Magnetic Fluid , 2013, Journal of Lightwave Technology.

[8]  C. C. Chan,et al.  Power-Referenced Optical Fiber Refractometer Based on a Hybrid Fiber Grating , 2011, IEEE Photonics Technology Letters.

[9]  Yong Zhao,et al.  Novel optical fiber current sensor based on magnetic fluid , 2010 .

[10]  Tuan Guo,et al.  Power-Referenced and Temperature-Calibrated Optical Fiber Refractometer , 2008, IEEE Photonics Technology Letters.

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

[12]  Ying Cui,et al.  Magneto-optical fiber sensor based on magnetic fluid surrounded tilted fiber Bragg grating , 2012, 2013 6th IEEE/International Conference on Advanced Infocomm Technology (ICAIT).

[13]  J. Albert,et al.  Tilted fiber Bragg grating sensors , 2013 .

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

[15]  P. Childs,et al.  Optical Fiber Cladding Ring Magnetic Field Sensor , 2011, IEEE Photonics Technology Letters.

[16]  Hao Zhang,et al.  Tilted fiber Bragg gratings: Principle and sensing applications , 2011 .

[17]  Shieh-Yueh Yang,et al.  Origin and applications of magnetically tunable refractive index of magnetic fluid films , 2004 .

[18]  S. Abdelaziz,et al.  All-fiber magnetic field sensors based on magnetic fluid-filled photonic crystal fibers. , 2013, Optics letters.

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

[20]  Yong-xing Jin,et al.  Magneto-optical fiber sensor based on bandgap effect of photonic crystal fiber infiltrated with magnetic fluid , 2012 .