Paper
13 December 2024 All-fiber temperature and strain simultaneous measurement sensor based on reflective Lyot filter cascaded with fiber Bragg grating
Zhengyu Liu, Haiwei Zhang, Yangyang Liu, Lifang Xue, Zhihong Chen
Author Affiliations +
Proceedings Volume 13496, AOPC 2024: Optical Sensing, Imaging Technology, and Applications; 134960E (2024) https://doi.org/10.1117/12.3046161
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China
Abstract
In this paper, an all-fiber dual-parameter sensor based on reflective Lyot filter (RLF) and fiber Bragg gating (FBG) structure is proposed and demonstrated for simultaneous measurement of temperature and strain. The RLF consists of an in-line polarizer and a polarization maintaining (PM) reflector, and then an FBG is fused in front of the RLF to compose the reflective sensing head. Due to the different wavelength responses of RLF and FBG to temperature and strain variations, simultaneous measurement of temperature and strain can be achieved using a dual-parameter matrix. Experimental results show that in the temperature range of 30-80 °C, the temperature sensitivities of the RLF and FBG are −1.19 nm/°C and 9.22 pm/°C, respectively. In addition, for a strain adjustment of 0-1600 με, the strain sensitivity of the RLF is 6.13 pm/με, while that of the FBG is 0.359 pm/με. Meanwhile, the regression coefficients of linear fitting are both large than 0.992, which indicated that the sensor possesses an excellent linearity. Moreover, the sensor we proposed has a large temperature and strain detection range and is simple, easy to fabricate, which demonstrating potential applications in dual-parameter detection.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Zhengyu Liu, Haiwei Zhang, Yangyang Liu, Lifang Xue, and Zhihong Chen "All-fiber temperature and strain simultaneous measurement sensor based on reflective Lyot filter cascaded with fiber Bragg grating", Proc. SPIE 13496, AOPC 2024: Optical Sensing, Imaging Technology, and Applications, 134960E (13 December 2024); https://doi.org/10.1117/12.3046161
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Fiber Bragg gratings

Sensors

Reflection

Temperature metrology

Optical filtering

Spectral response

Back to Top