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Optical Engineering • Open Access

Simultaneous measurement of temperature and pressure with cascaded extrinsic Fabry–Perot interferometer and intrinsic Fabry–Perot interferometer sensors

Paper Abstract

This paper presents an approach for simultaneous measurement of temperature and pressure using miniaturized fiber inline sensors. The approach utilizes the cascaded optical fiber inline intrinsic Fabry–Perot interferometer and extrinsic Fabry–Perot interferometer as temperature and pressure sensing elements, respectively. A CO 2 laser was used to create a loss between them to balance their reflection power levels. The multiplexed signals were demodulated using a Fast Fourier transform-based wavelength tracking method. Experimental results showed that the sensing system could measure temperature and pressure unambiguously in a pressure range of 0 to 6.895×10 5   Pa and a temperature range from 20°C to 700°C.

Paper Details

Date Published: 12 June 2014
PDF: 5 pages
Opt. Eng. 53(6) 067101 doi: 10.1117/1.OE.53.6.067101
Published in: Optical Engineering Volume 53, Issue 6
Show Author Affiliations
Yinan Zhang, Missouri Univ. of Science and Technology (United States)
Jie Huang, Clemson Univ. (United States)
Xinwei Lan, Clemson Univ. (United States)
Lei Yuan, Clemson Univ. (United States)
Hai Xiao, Clemson Univ. (United States)

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