Cascaded dual-channel fiber SPR temperature sensor based on liquid and solid encapsulations  

作　　者：Yong Wei Lingling Li Chunlan Liu Jiangxi Hu Yudong Su Ping Wu Xiaoling Zhao 魏勇;李玲玲;刘春兰;胡江西;苏于东;吴萍;赵晓玲(College of Electronic&Information Engineering,Chongqing Three Gorges University,Chongqing 404100,China)

机构地区：[1]College of Electronic&Information Engineering,Chongqing Three Gorges University,Chongqing 404100,China

出　　处：《Chinese Physics B》2021年第10期252-260,共9页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.61705025);the Natural Science Foundation of Heilongjiang Province,China(Grant No.F2018027);partially supported by Chongqing Natural Science Foundation(Grant Nos.cstc2019jcyj-msxmX0431 and cstc2018jcyjAX0817);the Science and Technology Project Affiliated to the Education Department of Chongqing Municipality(Grant Nos.KJQN201801217,KJQN201901226,and KJ1710247);Chongqing Key Laboratory of Geological Environment Monitoring and Disaster Early-Warning in Three Gorges Reservoir Area(Grant Nos.ZD2020A0103 and ZD2020A0102);the Fundamental Research Funds for Chongqing Three Gorges University of China(Grant No.19ZDPY08).

摘　　要：In order to control the working wavelength range of the fiber surface plasmon resonance(SPR)temperature sensor and realize the wavelength division multiplexing type multi-channel fiber SPR temperature sensor,by comprehensively investigating the influence of liquids with different thermal-optical coefficients and solid packaging materials on the performance of fiber SPR temperature sensor,a dual-channel fiber SPR temperature sensor based on liquid-solid cascade encapsulation was designed and fabricated.The liquid temperature sensing stage encapsulated in capillary worked in 616.03 nm-639.05 nm band,the solid sensing stage coated with pouring sealant worked in 719.37 nm-825.27 nm band,and the two stages were cascaded to form a fiber dual-channel temperature sensor.The testing results indicated that when the temperature range was 35℃-95℃,the sensitivity of two-stage temperature detection was−0.384 nm/℃and−1.765 nm/℃respectively.The proposed fiber sensor has simple fabrication and excellent performance which can be widely used in various fields of dual-channel temperature measurement and temperature compensation.

关 键 词：surface plasmon resonance(SPR) temperature sensor liquid-solid cascade dual channel 

分 类 号：TP212.11[自动化与计算机技术—检测技术与自动化装置]