Journal
IEEE SENSORS JOURNAL
Volume 16, Issue 21, Pages 7659-7662Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2016.2603521
Keywords
Optical fiber sensors; macro-bending SMF; fiber Bragg grating; temperature; magnetic field; magnetic fluid
Funding
- National Key Scientific Instrument and Equipment Development Project of China [2013YQ03091502]
- National Natural Science Foundation of China [61378043, 61107035]
- Natural Science Foundation of Tianjin [13JCYBJC16100, 13JCYBJC16200]
- National Innovation Fund of China [201410056151]
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In this paper, an optical fiber sensor for simultaneous measurement of magnetic field and temperature is proposed and demonstrated. The sensor consists of a macro-bending single-mode- fiber structure (MSS) and a closely concatenated fiber Bragg grating (FBG), both of which are coated with magnetic fluid. The MSS and FBG induce two types of dips in the transmission spectrum of the sensor, and they have the different sensitivities to magnetic field and temperature. Consequently, the simultaneous measurement for the dual-parameter can be realized by monitoring the wavelength shifts of the two types of dips. A sensor was fabricated and experimentally characterized. The results show that the proposed sensor is simple and effective in the simultaneous measurement of temperature and magnetic field.
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