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 CO2 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 x 105 Pa and a temperature range from 20°C to 700°C.
Recommended Citation
Y. Zhang et al., "Simultaneous Measurement of Temperature and Pressure with Cascaded Extrinsic Fabry-Perot Interferometer and Intrinsic Fabry-Perot Interferometer Sensors," Optical Engineering, vol. 53, no. 6, SPIE, Jun 2014.
The definitive version is available at https://doi.org/10.1117/1.OE.53.6.067101
Department(s)
Electrical and Computer Engineering
Sponsor(s)
National Energy Technology Laboratory (U.S.)
Keywords and Phrases
Carbon dioxide; Fast Fourier transforms; Fiber optic sensors; Optical fibers; Pressure; Temperature; Extrinsic Fabry Perot interferometer; Intrinsic Fabry-Perot interferometers; Multiplexed signals; Sensing systems; Simultaneous measurement; Temperature and pressures; Temperature range; Wavelength tracking; Optical variables measurement
International Standard Serial Number (ISSN)
0091-3286
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2014 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 3.0 License.
Publication Date
01 Jun 2014
Comments
The research work was supported by Department of Energy (DOE)-National Energy Technology Laboratory (NETL) under the contract DE-FE0001127.