Journal of the European Optical Society - Rapid publications, Vol 10 (2015)

Simultaneous measurement of magnetic field and temperature based on magnetic fluid-clad long period fiber grating

J. Tang, S. Pu, L. Luo, S. Dong

Abstract


Simultaneous measurement of magnetic field and temperature is proposed and experimentalized with a magnetic fluid-clad long period fibergrating structure. Magnetic fluid is used as the surrounding material of the long period fiber grating. Both of the wavelength and intensityof the spectral resonance valley of the proposed structure can be influenced by the applied magnetic field and ambient temperaturevariation. A two-parameter matrix method is proposed and utilized to measure the magnetic field and temperature simultaneously. Thelinear relationship between the corresponding wavelength shift/intensity variation and magnetic field/temperature change is obtained atcertain ranges of magnetic field and temperature, which is favorable for sensing applications.


© The Authors. All rights reserved. [DOI: 10.2971/jeos.2015.15025]

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