中国物理B ›› 2023, Vol. 32 ›› Issue (5): 54209-054209.doi: 10.1088/1674-1056/ac8f36

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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. 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
  • 收稿日期:2022-04-18 修回日期:2022-07-01 接受日期:2022-09-05 出版日期:2023-04-21 发布日期:2023-05-09
  • 通讯作者: Hailiang Chen E-mail:hlchen@ysu.edu.cn
  • 基金资助:
    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).

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. 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
  • Received:2022-04-18 Revised:2022-07-01 Accepted:2022-09-05 Online:2023-04-21 Published:2023-05-09
  • Contact: Hailiang Chen E-mail:hlchen@ysu.edu.cn
  • Supported by:
    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).

摘要: 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.

关键词: no-core fiber, surface plasmon resonance, temperature sensor

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.

Key words: no-core fiber, surface plasmon resonance, temperature sensor

中图分类号:  (Fiber waveguides, couplers, and arrays)

  • 42.81.Qb
71.45.Gm (Exchange, correlation, dielectric and magnetic response functions, plasmons) 07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)