Temperature-Insensitive Magnetic Field Sensor Based on Nanoparticle Magnetic Fluid and Photonic Crystal Fiber

A novel magnetic field sensor based on the magnetic fluid and Mach-Zehnder interferometer is proposed. The sensor takes advantage of the tunable refractive index property of the magnetic fluid and the modal interference property of the collapsed photonic crystal fiber. The achieved sensitivity and resolution of the sensor are 2.367 pm/Oe and 4.22 Oe, respectively. The magnetic field sensor is insensitive to the temperature variation with a temperature coefficient of 3.2 pm/°C.

[1]  Jen-Jie Chieh,et al.  Tunable optical switch using magnetic fluids , 2004 .

[2]  H. V. Thakur,et al.  Photonic crystal fiber injected with Fe3O4 nanofluid for magnetic field detection , 2011 .

[3]  Rajan Jha,et al.  Refractometry based on a photonic crystal fiber interferometer. , 2009, Optics letters.

[4]  S. L. Lee,et al.  Magnetochromatics of the magnetic fluid film under a dynamic magnetic field , 2001 .

[5]  Orlando Frazão,et al.  Recent Advances in High-Birefringence Fiber Loop Mirror Sensors , 2007, Sensors.

[6]  Hong-Chang Yang,et al.  Designing the refractive indices by using magnetic fluids , 2003 .

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

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

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

[10]  Shieh-Yueh Yang,et al.  Tunable refractive index of magnetic fluids and its applications , 2004 .

[11]  P. J. Ridler,et al.  Linear dichroism and birefringence effects in magnetic fluids , 1997 .

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

[14]  H. Choi,et al.  All-fiber Mach-Zehnder type interferometers formed in photonic crystal fiber. , 2007, Optics express.

[15]  Miniature refractometer based on modal interference in a hollow-core photonic crystal fiber with collapsed splicing. , 2011, Journal of biomedical optics.

[16]  Peng Zu,et al.  Magneto-optic fiber Sagnac modulator based on magnetic fluids. , 2011, Optics letters.

[17]  Vittoria Finazzi,et al.  Photonic crystal fiber sensor array based on modes overlapping. , 2011, Optics express.

[18]  Byeong Ha Lee,et al.  Temperature Robust Refractive Index Sensor Based on a Photonic Crystal Fiber Interferometer , 2010, IEEE Sensors Journal.