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Cascaded dual-channel fiber SPR temperature sensor based on liquid and solid encapsulations |
Yong Wei(魏勇), Lingling Li(李玲玲), Chunlan Liu(刘春兰)†, Jiangxi Hu(胡江西), Yudong Su(苏于东), Ping Wu(吴萍), and Xiaoling Zhao(赵晓玲) |
College of Electronic&Information Engineering, Chongqing Three Gorges University, Chongqing 404100, China |
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Abstract 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.
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Received: 18 March 2021
Revised: 19 May 2021
Accepted manuscript online: 24 May 2021
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PACS:
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07.07.Df
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(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
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42.81.Cn
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(Fiber testing and measurement of fiber parameters)
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71.45.Gm
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(Exchange, correlation, dielectric and magnetic response functions, plasmons)
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Fund: Project 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), and the Fundamental Research Funds for Chongqing Three Gorges University of China (Grant No. 19ZDPY08). |
Corresponding Authors:
Chunlan Liu
E-mail: lclliuchunlan@163.com
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Cite this article:
Yong Wei(魏勇), Lingling Li(李玲玲), Chunlan Liu(刘春兰), Jiangxi Hu(胡江西), Yudong Su(苏于东), Ping Wu(吴萍), and Xiaoling Zhao(赵晓玲) Cascaded dual-channel fiber SPR temperature sensor based on liquid and solid encapsulations 2021 Chin. Phys. B 30 100701
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