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Volume 8
Issue 12
10.3390/photonics8120581
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Communication

A High Precision Fiber Optic Fabry–Perot Pressure Sensor Based on AB Epoxy Adhesive Film

by
Yanan Zhang
1,2,
Shubin Zhang
1,2,
Haitao Gao
1,2,
Danping Xu
1,2,
Zhuozhen Gao
1,2,
Zheyu Hou
1,2,
Jian Shen
1,2,* and
Chaoyang Li
1,2
1
School of Information and Communication Engineering, Hainan University, Haikou 570228, China
2
State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
*
Author to whom correspondence should be addressed.
Photonics 2021, 8(12), 581; https://doi.org/10.3390/photonics8120581
Submission received: 7 November 2021 / Revised: 9 December 2021 / Accepted: 13 December 2021 / Published: 16 December 2021
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Abstract

This paper proposes a Fabry–Perot pressure sensor based on AB epoxy adhesive with ultra-high sensitivity under low pressure. Fabry–Perot interference, located between single-mode fiber (SMF) and hollow-core fiber (HCF), is an ultra-thin AB epoxy film formed by capillary action. Then the thick HCF was used to fix the HCF and SMF at both ends with AB epoxy adhesive. Experimental results show that when the thickness of AB epoxy film is 8.74 μm, and the cavity length is 30 μm, the sensor has the highest sensitivity. The sensitivity is 257.79 nm/MPa within the pressure range of 0–70 kPa. It also investigated the influence of the curing time of AB epoxy on the interference spectrum. Experiments showed that the interference spectrum peak is blue-shifted with the increase of curing time. Our study also demonstrated the humidity stability of this pressure sensor. These characteristics mean that our sensor has potential applications in the biomedical field and ocean exploration.
Keywords: optical fiber sensor; AB epoxy adhesive; thin films; pressure sensor optical fiber sensor; AB epoxy adhesive; thin films; pressure sensor

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MDPI and ACS Style

Zhang, Y.; Zhang, S.; Gao, H.; Xu, D.; Gao, Z.; Hou, Z.; Shen, J.; Li, C. A High Precision Fiber Optic Fabry–Perot Pressure Sensor Based on AB Epoxy Adhesive Film. Photonics 2021, 8, 581. https://doi.org/10.3390/photonics8120581

AMA Style

Zhang Y, Zhang S, Gao H, Xu D, Gao Z, Hou Z, Shen J, Li C. A High Precision Fiber Optic Fabry–Perot Pressure Sensor Based on AB Epoxy Adhesive Film. Photonics. 2021; 8(12):581. https://doi.org/10.3390/photonics8120581

Chicago/Turabian Style

Zhang, Yanan, Shubin Zhang, Haitao Gao, Danping Xu, Zhuozhen Gao, Zheyu Hou, Jian Shen, and Chaoyang Li. 2021. "A High Precision Fiber Optic Fabry–Perot Pressure Sensor Based on AB Epoxy Adhesive Film" Photonics 8, no. 12: 581. https://doi.org/10.3390/photonics8120581

APA Style

Zhang, Y., Zhang, S., Gao, H., Xu, D., Gao, Z., Hou, Z., Shen, J., & Li, C. (2021). A High Precision Fiber Optic Fabry–Perot Pressure Sensor Based on AB Epoxy Adhesive Film. Photonics, 8(12), 581. https://doi.org/10.3390/photonics8120581

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