Alterable interferential fineness for high temperature sensing calibration based on Bragg hollow core fiber
We propose, what we believe to be, a novel method for high temperature sensing calibration based on the mechanism of alterable interferential fineness in Bragg hollow core fiber (BHCF). To verify the proof-of-concept, the fabricated sensing structure is sandwiched by two sections with different length of BHCF. Two interferential fineness fringes dominate the transmission spectrum, where the high-fineness fringes formed by anti-resonant reflecting optical waveguide (ARROW) plays the role for high temperature measurement. Meanwhile, the low-fineness fringes induced by short Fabry-Perot (F-P) cavity are exploited as temperature calibration. The experimental results show that the ARROW mechanism-based temperature sensitivity can reach 26.03 pm/°C, and the intrinsic temperature sensitivity of BHCF is 1.02 pm/°C. Here, the relatively lower magnitude of the temperature sensitivity is considered as the standard value since it merely relies on the material properties of silicon. Additionally, a large dynamic temperature range from 100°C to 800°C presents linear response of the proposed sensing structure, which may shine the light on the sensing applications in the harsh environment.
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|Document Type||Journal Article|
|Department||College of Engineering|
1.Hubei Key Laboratory of Intelligent Wireless Communications,Hubei Engineering Research Center of Intelligent IOT technology,College of Electronics and Information Engineering,South-Central Minzu University,Wuhan,430074,China
2.School of Civil and Environmental Engineering,Nanyang Technological University,Singapore,50 Nanyang Avenue,639798,Singapore
3.College of Engineering,Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China
Ran，Sixiang,Ni，Wenjun,Yang，Chunyong,et al. Alterable interferential fineness for high temperature sensing calibration based on Bragg hollow core fiber[J]. Optics Express,2023,31(15):25207-25219.
Ran，Sixiang,Ni，Wenjun,Yang，Chunyong,Zhao，Zhongke,Wang，Shun,&Shum，Perry Ping.(2023).Alterable interferential fineness for high temperature sensing calibration based on Bragg hollow core fiber.Optics Express,31(15),25207-25219.
Ran，Sixiang,et al."Alterable interferential fineness for high temperature sensing calibration based on Bragg hollow core fiber".Optics Express 31.15(2023):25207-25219.
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