Temperature self-compensative all-fiber magnetic field sensing structure based on no-core fiber cascaded with fiber Bragg gratings

Abstract A kind of fiber-optic magnetic field sensing structure based on no-core fiber (NCF) cascaded with fiber Bragg gratings (FBGs) is proposed. The NCF is sandwiched between two pieces of singlemode fibers to form singlemode-no-core-singlemode (SNS) interferometric fiber structure, which is cladded with the magnetic field sensitive material (i.e. magnetic fluid). Measurement is done by monitoring the differential intensity of the signal at the two Bragg peak wavelengths, which increases the magnetic field sensitivity and can decrease the cost of the pragmatic sensing system. Due to the similar thermal effect of NCF and FBG, the temperature cross-sensitivity is greatly reduced. The achieved magnetic field sensitivity is 0.1774 dB/mT at 0–6 mT and 1.9296 dB/mT at 6–18 mT. The temperature sensitivity is only 0.0623 dB/ °C in the range of 21–35 °C. The corresponding device does not necessitate intensity-stabilized broadband light source as well.

[1]  Qiangzhou Rong,et al.  Highly sensitive magnetic field sensor using tapered Mach–Zehnder interferometer , 2018, Optics and Lasers in Engineering.

[2]  W. Xu,et al.  Reflective Liquid Level Sensor Based on Parallel Connection of Cascaded FBG and SNCS Structure , 2017, IEEE Sensors Journal.

[3]  Renxi Gao,et al.  Design and fabrication of SMS fiber refractometer for liquid , 2012 .

[4]  Yuehua Wu,et al.  All-Fiber Curvature Sensor Based on Multimode Interference , 2011, IEEE Photonics Technology Letters.

[5]  Tingyun Wang,et al.  A Highly Sensitive Intensity-Modulated Optical Fiber Magnetic Field Sensor Based on the Magnetic Fluid and Multimode Interference , 2017, J. Sensors.

[6]  Yuliya Semenova,et al.  Use of a Bent Single SMS Fiber Structure for Simultaneous Measurement of Displacement and Temperature Sensing , 2011, IEEE Photonics Technology Letters.

[7]  L Sun,et al.  All-fiber optical magnetic field sensor based on Faraday rotation , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[8]  Changyun Miao,et al.  Multipoint refractive index and temperature fiber optic sensor based on cascaded no core fiber-fiber Bragg grating structures , 2017 .

[9]  Lin Zhang,et al.  Refractometer based on fiber Bragg grating Fabry-Pérot cavity embedded with a narrow microchannel. , 2011, Optics express.

[10]  Fiber laser refractometer based on tunable bandpass filter tailored FBG reflection , 2018 .

[11]  Decai Li,et al.  Compact magnetic-field sensor based on optical microfiber Michelson interferometer and Fe3O4 nanofluid. , 2013, Applied optics.

[12]  Y. Jiang,et al.  Magnetic fluid-filled microhole in the collapsed region of a photonic crystal fiber for the measurement of a magnetic field. , 2013, Optics letters.

[13]  Yueyuan Xia,et al.  Theoretical study of hydrogen atom adsorbed on carbon-doped BN nanotubes , 2006 .

[14]  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).

[15]  Franz Keplinger,et al.  Lorentz force based magnetic field sensor with optical readout , 2004 .

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

[17]  Yuliya Semenova,et al.  Humidity sensor based on a single-mode hetero-core fiber structure. , 2011, Optics letters.

[18]  Bai-Ou Guan,et al.  Faraday-rotation-based miniature magnetic field sensor using polarimetric heterodyning fiber grating laser. , 2013, Optics letters.

[19]  Hao Zhang,et al.  Magnetic field tunability of optical microfiber taper integrated with ferrofluid. , 2013, Optics express.

[20]  A. Soricelli,et al.  Triaxial Fiber Optic Magnetic Field Sensor for Magnetic Resonance Imaging , 2017, Journal of Lightwave Technology.

[21]  Ginu Rajan,et al.  A voltage sensor based on a singlemode–multimode–singlemode fiber structure , 2010 .

[22]  Ying Cui,et al.  Magnetic field sensor using tilted fiber grating interacting with magnetic fluid. , 2013, Optics express.

[23]  Yajun Jiang,et al.  Magnetic field sensing based on tilted fiber Bragg grating coated with nanoparticle magnetic fluid , 2014 .

[24]  A. Mehta,et al.  Multimode interference-based fiber-optic displacement sensor , 2003, IEEE Photonics Technology Letters.

[25]  Peng Zu,et al.  Intensity-modulated magnetic field sensor based on magnetic fluid and optical fiber gratings , 2013 .

[26]  Hanim Abdul Razak,et al.  A fiber optic sensor based on Mach‐Zehnder interferometer structure for food composition detection , 2018 .

[28]  V. Singh,et al.  A novel use of etched multi-mode fibre as magnetic field sensor , 2017 .

[29]  Jing Li,et al.  Magnetic field and temperature sensor based on a no-core fiber combined with a fiber Bragg grating , 2015 .

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

[31]  J Knittel,et al.  Cavity optomechanical magnetometer. , 2012, Physical review letters.