Double F-P interference optical fiber high temperature gas pressure sensor based on suspended core fiber

Zhu, Jiajie and Nan, Pengyu and Lim, Kok-Sing and Liu, Xin and Dang, Wenjie and Li, Zeren and Dan, Jinxiao and Yang, Hangting and Ahmad, Harith and Yang, Hangzhou (2021) Double F-P interference optical fiber high temperature gas pressure sensor based on suspended core fiber. IEEE Sensors Journal, 21 (23). pp. 26805-26813. ISSN 1530-437X, DOI https://doi.org/10.1109/JSEN.2021.3121869.

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Abstract

A compact and simple double F-P interference optical fiber optic gas pressure sensor based on suspended core structure is proposed and demonstrated. The sensor is formed by splicing a Section of thin-walled grapefruit photonic crystal fiber (G-PCF) with single-mode fiber (SMF). By adjusting the special fusion parameters, a short air-cavity region is formed in the G-PCF next to the splicing point with the SMF segment, and the other end of the G-PCF segment is open to the atmosphere. The output interference spectrum of the sensor comprises of two spectral parameters that have different sensitivities to temperature and gas pressure. One of them is the wideband envelope that is associated with the air-cavity and it is only sensitive to the gas pressure but insensitive to the change of ambient temperature. This property is particularly useful for addressing the complex temperature-pressure cross sensitivity of both spectral parameters. The research findings indicate that the sensor can perform an accurate measurement for gas pressure in dynamic range of 0-1.0 MPa under the high temperature condition up to 500 degrees C.

Item Type: Article
Funders: Science Technology Plan of Shaanxi [2020GY-187], Northwest University Young Scientist Support Program [NJ00089], Scientific Research Program of Shaanxi Provincial Department of Education [21JK0945]
Uncontrolled Keywords: Sensors; Optical fiber sensors; Temperature sensors; Optical fibers; Temperature measurement; Sensitivity; Interference; Fiber-optic high temperature gas pressure sensor; suspended core fiber; double F-P interference
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 09 Jun 2022 02:41
Last Modified: 09 Jun 2022 02:41
URI: http://eprints.um.edu.my/id/eprint/34410

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