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Temperature sensing based on photonic crystal fiber filled with thermo-optic liquids of ethanol-toluene mixed solution
Author(s): Lu Xue; Yani Zhang; Yuyu Zhu
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Paper Abstract

In this paper, a temperature sensor based on photonic crystal fiber (PCF) is designed and proposed. The temperature sensing is realized by filling different concentration ratios thermo-optic liquids of Ethanol-Toluene in the innermost layer six airholes of the PCF, which is consisting of a solid core and five layers air holes of hexagonal lattices. The propagation characteristics of proposed sensor have been investigated by adopting the full vectorial-finite element method (FV-FEM). The relationship between effective refractive index (neff), effective mode area (Aeff), confinement loss (Lc) and temperature have been numerically simulated. Simulation results show that both neff and Aeff are decreased with the increasing of temperature for a constant wavelength. The confinement loss peak occurs uniform red-shifted when the temperature rises, which indicate a linear relation between the wavelength of the loss peak and temperature of thermo-optic liquids. Furthermore, the working temperature range of the sensor can be adjusted by mixing different ratios of the thermo-optic liquids, the temperature sensitivity is as high as 6 nm/°C. The new sensor can also be produced at a low cost and provides a new avenue for ultrasensitive temperature sensing.

Paper Details

Date Published: 20 December 2019
PDF: 9 pages
Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112090B (20 December 2019); doi: 10.1117/12.2542416
Show Author Affiliations
Lu Xue, Baoji Univ. of Arts and Science (China)
Baoji Engineering Technology Research Ctr. on Ultrafast Laser and New Materials (China)
Yani Zhang, Baoji Univ. of Arts and Science (China)
Shaanxi Univ. of Science and Technology (China)
Baoji Engineering Technology Research Ctr. on Ultrafast Laser and New Materials (China)
Yuyu Zhu, Baoji Univ. of Arts and Science (China)
Baoji Engineering Technology Research Ctr. on Ultrafast Laser and New Materials (China)


Published in SPIE Proceedings Vol. 11209:
Eleventh International Conference on Information Optics and Photonics (CIOP 2019)
Hannan Wang, Editor(s)

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