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27 November 2023 Multi-parameter optical fibre sensors based on W-type leaky fibre grating
Yanhua Luo, Binbin Yan, Junjie Xie, Haifeng Qi, Liwei Yang, Kuiru Wang, Chongxiu Yu, Xinzhu Sang, Jinhui Yuan, Jiasheng Ni, Gang-Ding Peng
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Proceedings Volume 12771, Advanced Sensor Systems and Applications XIII; 127711Z (2023) https://doi.org/10.1117/12.2690056
Event: SPIE/COS Photonics Asia, 2023, Beijing, China
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Abstract
A novel multi-parameter sensor has been proposed based on the W-type leaky fibre grating. The resonant wavelength for different mode in the reflection spectra has the same temperature sensitivity of ~9.13 pm/oC, but the reflection intensity has no dependence upon the temperature. The resonant wavelength of different mode linearly varies a little with refractive index increasing, however, its reflection intensity follows the negative exponential decay. The resonant wavelength for each mode almost linearly responds to the displacement, giving out a displacement sensitivity of 99.94 pm/mm. However, the reflection response to the displacement varies a lot. Based on these results, simple and compact multi-parameter fibre sensors are proposed based on W fibre grating.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Yanhua Luo, Binbin Yan, Junjie Xie, Haifeng Qi, Liwei Yang, Kuiru Wang, Chongxiu Yu, Xinzhu Sang, Jinhui Yuan, Jiasheng Ni, and Gang-Ding Peng "Multi-parameter optical fibre sensors based on W-type leaky fibre grating", Proc. SPIE 12771, Advanced Sensor Systems and Applications XIII, 127711Z (27 November 2023); https://doi.org/10.1117/12.2690056
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KEYWORDS
Fiber Bragg gratings
Fiber optics sensors
Specialty optical fibers
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