Journal
OPTICS EXPRESS
Volume 30, Issue 21, Pages 39055-39067Publisher
Optica Publishing Group
DOI: 10.1364/OE.470386
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Funding
- National Natural Science Foundation of China [11604311, 21506257, 51606158, 61705204, 12174355]
- State Key Laboratory of Transducer Technology of China [SKT2001]
- Scientific Research Fund of Si Chuan Provincial Science and Technology Department [2020YJ0137, 2020YFG0467]
- Undergraduate Innovation Fund Project Precision Funding by Southwest University of Science and Technology [JZ21-052, JZ21-057]
- School of Science of Southwest University of Science and Technology for the Innovation Fund Project [LX20210067]
- Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (STIP) [2021L485]
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A surface plasmon resonance (SPR) sensor made of photonic crystal fiber (PCF) is designed for dual-parameter sensing of magnetic field and temperature. The sensor effectively detects magnetic field and temperature by coating the two open ring channels with gold and silver layers and filling them with magnetic fluid (MF) and Polydimethylsiloxane (PDMS). The sensor exhibits high sensitivity and special sensing performance, making it suitable for solving cross-sensitivity and demodulation issues in dual-parameter sensing.
A surface plasmon resonance (SPR) sensor comprising photonic crystal fiber (PCF) is designed for magnetic field and temperature dual-parameter sensing. In order to make the SPR detection of magnetic field and temperature effectively, the two open ring channels of the proposed sensor are coated with gold and silver layers and filled with magnetic fluid (MF) and Polydimethylsiloxane (PDMS), respectively. The sensor is analyzed by the finite element method and its mode characteristics, structure parameters and sensing performance are investigated. The analysis reveals when the magnetic field is a range of 40-310 Oe and the temperature is a range of 0-60 degrees C, the maximum magnetic field sensitivity is 308.3 pm/Oe and temperature sensitivity is 6520 pm/degrees C. Furthermore, temperature and magnetic field do not crosstalk with each other's SPR peak. Its refractive index sensing performance is also investigated, the maximum sensitivity and FOM of the left channel sensing are 16820 nm/RIU and 1605 RIU-1, that of the right channel sensing are 13320 nm/RIU and 2277 RIU-1. Because of its high sensitivity and special sensing performance, the proposed sensor will have potential application in solving the problems of cross-sensitivity and demodulation due to nonlinear changes in sensitivity of dual-parameter sensing.(c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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