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

Yinan Zhang; Jie Huang; Xinwei Lan; Lei Yuan; Hai Xiao

doi:10.1117/1.OE.53.6.067101

12 June 2014 Simultaneous measurement of temperature and pressure with cascaded extrinsic Fabry–Perot interferometer and intrinsic Fabry–Perot interferometer sensors

Yinan Zhang, Jie Huang, Xinwei Lan, Lei Yuan, Hai Xiao

Author Affiliations +

Optical Engineering, Vol. 53, Issue 6, 067101 (June 2014). https://doi.org/10.1117/1.OE.53.6.067101

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.

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Yinan Zhang, Jie Huang, Xinwei Lan, Lei Yuan, and Hai Xiao "Simultaneous measurement of temperature and pressure with cascaded extrinsic Fabry–Perot interferometer and intrinsic Fabry–Perot interferometer sensors," Optical Engineering 53(6), 067101 (12 June 2014). https://doi.org/10.1117/1.OE.53.6.067101

Published: 12 June 2014

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