Abstract
This paper proposes and implements a macro-bending fiber M-Z interference sensor for simultaneously measuring magnetic field and temperature. The sensor is fabricated by fiber Bragg grating (FBG) cascaded single bending-ring fiber (SBF) immersed in a magnetic fluid (MF). Different dips are generated by the SBF and FBG, which respond differently to external magnetic fields and temperature changes. Experimental analysis shows that the proposed sensor possesses magnetic field sensitivity of 103.33 pm/mT and temperature sensitivity of 13.08 pm/°C. The suggested sensor's advantages include a small overall footprint, simple manufacture, high sensitivity, and low price.
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