Email this article Ultrasensitive Temperature Sensor Based on Fiber-Optic Fabry–Pérot Interferometer with Vernier Effect
- Authors: Yang Y.1,2, Wang Y.2, Zhao Y.2, Jiang J.2
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Affiliations:
- Higher Educational Key Laboratory for Measuring and Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology
- Institute of Photonics and Optical Fiber Technology, Harbin University of Science and Technology
- Issue: Vol 40, No 3 (2019)
- Pages: 243-248
- Section: Article
- URL: https://journal-vniispk.ru/1071-2836/article/view/248746
- DOI: https://doi.org/10.1007/s10946-019-09796-2
- ID: 248746
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Abstract
We propose and demonstrate an ultrasensitive temperature sensor based on a fiber-optic Fabry–Pérot interferometer (FPI) with the Vernier effect. The sensor is prepared by splicing a section of silica tube and single-mode fiber (SMF) to a section of SMF in sequence, which formed two-cascaded FPIs. Their superimposed spectrum can produce the Vernier effect and form the interference spectrum envelope due to a similar free spectrum range (FSR). The shift of the interference spectrum envelope is much larger than that of a single FPI, when the temperature changes. Experimental results show that the designed sensor can provide a high temperature sensitivity of 183.99 pm/°C, which is almost 220 times higher than that of a single air cavity (0.86 pm/°C) and about 20 times higher than that of a single silica cavity (9.14 pm/°C). The sensor designed has compact structure (< 1 mm) and high sensitivity, providing a prospect for successful applications.
About the authors
Yuqiang Yang
Higher Educational Key Laboratory for Measuring and Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology; Institute of Photonics and Optical Fiber Technology, Harbin University of Science and Technology
Email: jjx_hrbust@sina.com
China, Harbin, 150080; Harbin, 150080
Yongguang Wang
Institute of Photonics and Optical Fiber Technology, Harbin University of Science and Technology
Email: jjx_hrbust@sina.com
China, Harbin, 150080
Yuxin Zhao
Institute of Photonics and Optical Fiber Technology, Harbin University of Science and Technology
Email: jjx_hrbust@sina.com
China, Harbin, 150080
Jiuxing Jiang
Institute of Photonics and Optical Fiber Technology, Harbin University of Science and Technology
Author for correspondence.
Email: jjx_hrbust@sina.com
China, Harbin, 150080
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