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20 November 2024 Ultrasensitive fiber temperature sensor based on Fabry Perot interferometer and Vernier effect
Simei Sun, Jing Huang, Mingyue Huang, Huaqian Yan, Haoyue Yang, Dihua Tang, Shuang Cao, Wenbo Jiang, Fulin Chen, Chao Jiang
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Proceedings Volume 13243, Advanced Sensor Systems and Applications XIV; 132430C (2024) https://doi.org/10.1117/12.3036179
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China
Abstract
Temperature is undoubtedly one of the most important parameters in human life, production, and technological activities, and plays a crucial role in both daily life and industrial production. Fiber temperature sensors, with their advantages of small size, fast response, high sensitivity, and so on, have been widely studied and used. Ultrasensitive fiber temperature sensor based on the Fabry Perot interferometer (FPI) and vernier effect has been composed. Single mode fiber (SMF), polydimethylsiloxane (PDMS), and capillary have been used to fabricate two FPIs. The sensor was cascaded by a sensing FPI (FPIs), a "SMF-PDMS-SMF" cavity with FSR of 6.27 nm, and a reference FPI (FPIr), a "SMF-capillary-SMF" cavity with FSR of 6.47 nm. Temperature measurements have been performed on both individual sensing FPIs and cascaded sensor, and it is found that they both have excellent linear response with linearity of more than 0.998. The sensitivity of the single sensing FPI is 1.037 nm/°C; The temperature sensitivity of the sensor based on the cursor effect is 32.39 nm/°C, with an amplification factor of 31.58, which is very close to the theoretical M-factor. This ultrasensitive temperature sensor can meet the demand for high-precision temperature measurement.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Simei Sun, Jing Huang, Mingyue Huang, Huaqian Yan, Haoyue Yang, Dihua Tang, Shuang Cao, Wenbo Jiang, Fulin Chen, and Chao Jiang "Ultrasensitive fiber temperature sensor based on Fabry Perot interferometer and Vernier effect", Proc. SPIE 13243, Advanced Sensor Systems and Applications XIV, 132430C (20 November 2024); https://doi.org/10.1117/12.3036179
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KEYWORDS
Sensors
Temperature sensors
Fiber optics sensors
Fabry Perot interferometers
Vernier effect
Polydimethylsiloxane
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