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
Abstract A high sensitivity plasmonic temperature sensor based on a side-polished photonic crystal fiber is proposed in this work. In order to achieve high sensitivity and high stability, the gold layer is coated on the side-polished photonic crystal fiber to support surface plasmon resonance. The mixture of ethanol and chloroform is used as the thermosensitive liquid. The performances of the proposed temperature sensor were investigated by the finite element method (FEM). Simulation results indicate that the sensitivity of the temperature sensor is as high as 7.82 nm/℃. It has good linearity (R2=0.99803), the resolution of 1.1×10-3℃, and the amplitude sensitivity of 0.1008℃-1. In addition, the sizes of the small air hole and polishing depth have little influence on the sensitivity. Therefore, the proposed sensor shows a high structure tolerance. The excellent performance and high structure tolerance of the sensor make it an appropriate choice for temperature measurement.
(Exchange, correlation, dielectric and magnetic response functions, plasmons)
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 12074331), the Natural Science Foundation of Hebei Province, China (Grant No. F2020203050), and the Postdoctoral preferred funding research project of Hebei Province, China (Grant No. B2018003008).
Zhigang Gao(高治刚), Xili Jing(井西利), Yundong Liu(刘云东), Hailiang Chen(陈海良), and Shuguang Li(李曙光) High sensitivity plasmonic temperature sensor based on a side-polished photonic crystal fiber 2022 Chin. Phys. B 31 024207
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