| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Simultaneous measurements of refractive index and temperature based on a no-core fiber coated with Ag and PDMS films |
| Yuxin Li(李宇昕)1, Hailiang Chen(陈海良)1,†, Yingyue Zhang(张赢月)1, Qiang Chen(陈强)1, Biao Wu(武彪)1, Xiaoya Fan(樊晓亚)1, Yingchao Liu(刘英超)2, and Mingjian Ma(马明建)1 |
1 State Key Laboratory of Metastable Materials Science&Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China;
2 College of Artificial Intelligence, North China University of Science and Technology, Tangshan 063210, China |
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Abstract A compact surface plasmon resonance (SPR) fiber optic sensor, being utilized to simultaneously measure refractive index (RI) and temperature, is proposed and experimentally demonstrated in this paper. One part of a no-core fiber (NCF) was coated with a silver (Ag) film, and the other part was coated with a silver/polydimethylsiloxane (Ag/PDMS) composite film to stimulate the SPR effect. Due to the two heterogeneous films, two dips appeared in the transmission spectrum and were used to achieve the dual-parameter measurements. The experimental results showed that the RI sensitivity reached 2121.43 nm/RIU and 0 nm/RIU, while the temperature sensitivity reached -0.32 nm/℃ and -2.21 nm/℃ for the two dips, respectively. Based on the obtained transfer matrix, the measurements of RI and temperature could be demodulated. This designed sensor showed the merits of simple structure, easy to implement, and high sensitivity, demonstrating application prospects in dual-parameter monitoring.
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Received: 18 April 2022
Revised: 01 July 2022
Accepted manuscript online: 05 September 2022
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PACS:
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42.81.Qb
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(Fiber waveguides, couplers, and arrays)
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71.45.Gm
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(Exchange, correlation, dielectric and magnetic response functions, plasmons)
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07.07.Df
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(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
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| Fund: Project supported by the Natural Science Foundation of Hebei Province, China (Grant No. F2021203112), the National Natural Science Foundation of China (Grant No. 12074331), the National Key Research and Development Program of China (Grant No. 2019YFB2204001), and Basic Scientific Research Funds for universities in Hebei Province, China (Grant No. JQN2021019). |
Corresponding Authors:
Hailiang Chen
E-mail: hlchen@ysu.edu.cn
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Cite this article:
Yuxin Li(李宇昕), Hailiang Chen(陈海良), Yingyue Zhang(张赢月), Qiang Chen(陈强), Biao Wu(武彪),Xiaoya Fan(樊晓亚), Yingchao Liu(刘英超), and Mingjian Ma(马明建) Simultaneous measurements of refractive index and temperature based on a no-core fiber coated with Ag and PDMS films 2023 Chin. Phys. B 32 054209
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