中国物理B ›› 2023, Vol. 32 ›› Issue (5): 54209-054209.doi: 10.1088/1674-1056/ac8f36
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
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
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.
中图分类号: (Fiber waveguides, couplers, and arrays)