High-sensitivity and low-temperature magnetic field sensor based on tapered two-mode fiber interference.

A high-sensitivity and low-temperature fiber-optic magnetic field sensor based on a tapered two-mode fiber (TTMF) sandwiched between two single-mode fibers has been proposed and demonstrated. The section of TTMF has a specifically designed transition region as an efficient tool to filter higher-order modes, where the uniform modal interferometer just involved with LP01 and LP11 modes is achieved. The transmission spectral characteristics and the magnetic response of the proposed sensors have been investigated. The experimental results show that a maximum sensitivity of 98.2  pm/Oe within a linear magnetic field intensity ranging from 0 to 140 Oe can be achieved. Significantly, the temperature cross-sensitivity problem can be resolved owing to the lower thermal expansion coefficient of the TTMF. Finally, with its low insertion loss, compactness, and ease of fabrication, the proposed sensor would find potential applications in the measurement of a magnetic field.

[1]  Lei Zhang,et al.  Micro/nanofiber optical sensors , 2011 .

[2]  Qiang Wu,et al.  High-sensitivity, evanescent field refractometric sensor based on a tapered, multimode fiber interference. , 2011, Optics letters.

[3]  Hong-Bo Sun,et al.  Ultrasensitive temperature sensor based on an isopropanol-sealed optical microfiber taper. , 2013, Optics letters.

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

[5]  Xiaopeng Dong,et al.  Long-Period Fiber Grating Within D-Shaped Fiber Using Magnetic Fluid for Magnetic-Field Detection , 2012, IEEE Photonics Journal.

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

[7]  Stavros Pissadakis,et al.  Optical fibre long period grating spectral actuators utilizing ferrofluids as outclading overlayers , 2011 .

[8]  Yongqin Yu,et al.  Micro-bending vector sensor based on six-air-hole grapefruit microstructure fiber using lateral offset splicing. , 2015, Optics express.

[9]  Yuliya Semenova,et al.  Magnetic-field sensor based on whispering-gallery modes in a photonic crystal fiber infiltrated with magnetic fluid. , 2015, Optics letters.

[10]  Lin Zhang,et al.  Multi-channel mode converter based on a modal interferometer in a two-mode fiber. , 2017, Optics letters.

[11]  Tao Zhu,et al.  All fiber magnetic field sensor with Ferrofluid-filled tapered microstructured optical fiber interferometer. , 2015, Optics express.

[12]  G. A. Cárdenas-Sevilla,et al.  Optical microfiber mode interferometer for temperature-independent refractometric sensing. , 2012, Optics letters.

[13]  Deming Liu,et al.  Refractive index sensor using microfiber-based Mach-Zehnder interferometer. , 2012, Optics letters.

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

[15]  Yan-ge Liu,et al.  Laser-tuned whispering gallery modes in a solid-core microstructured optical fibre integrated with magnetic fluids , 2015, Scientific Reports.

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

[17]  Shengli Pu,et al.  Magnetic field sensing based on magnetic-fluid-clad fiber-optic structure with taper-like and lateral-offset fusion splicing. , 2014, Optics express.

[18]  Deming Liu,et al.  Refractive index sensitivity characteristics near the dispersion turning point of the multimode microfiber-based Mach-Zehnder interferometer. , 2015, Optics letters.

[19]  Zhi-mei Qi,et al.  Temperature-compensated fibre optic magnetic field sensor based on a self-referenced anti-resonant reflecting optical waveguide , 2017 .

[20]  Bing He,et al.  Transmission Spectrum Characteristics for a Single-Mode-Multimode-Single-Mode Fiber Filter , 2014, IEEE Photonics Technology Letters.