Mach–Zehnder interferometric magnetic field sensor based on a photonic crystal fiber and magnetic fluid
Document Type
Article
Publication Date
1-1-2018
Abstract
A Mach–Zehnder interferometric magnetic field sensor based on a photonic crystal fiber (PCF) and magnetic fluid (MF) was designed and experimentally demonstrated. The sensing probe consists of a single-mode-(SM)multimode-PCF-SM fiber structure through arc fusion splicing. It was then laser engrave notched with the femtosecond laser so that the PCF cladding was selectively infilled MF. A well-defined interference pattern was obtained on account of the tunable refractive index of the MF infilled PCF cladding. The transmission spectra of the proposed sensor under different magnetic field intensities have been measured and theoretically analyzed. The results show that the sensitivity of the proposed sensor can reach −0.13 dB∕mT and 0.07334 nm/mT in the magnetic field intensity from 1 mT to 20 mT and 2 mT to 20 mT, respectively.
Keywords
Arc fusion, Different-magnetic fields, Interference patterns, Magnetic field sensors, Magnetic-field intensity, Sensing probe, Single mode, Transmission spectrums
Divisions
photonics
Funders
National Natural Science Foundation of China (NSFC) (61077060, 61205080, 61235005, 61327012, 61405160),National High Technology Research and Development Program 863 (2009AA06Z203),Ministry of Education Project of Science and Technology Innovation (Z08119),Ministry of Science and Technology Project of International Cooperation (2008CR1063),Shaanxi Province Project of Science and Technology Innovation (2008ZDGC-14, 2009ZKC01-19),ShaanXi Young Scientist Star Program (2016KJXX-04),Projects of Scientific Research Plan of ShaanXi Education Department (15JK1751),Northwest University (NWU) Young Scientist Support Program (NJ00089),Fellow of the Royal Geographical Society (RGS) (FP002-2013B),Universiti Malaya (UM) Research Grant (RG326-15AFR)
Publication Title
Applied Optics
Volume
57
Issue
9
Publisher
Optical Society of America