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.

Department(s)

Electrical and Computer Engineering

Sponsor(s)

National Energy Technology Laboratory (U.S.)

Comments

The research work was supported by Department of Energy (DOE)-National Energy Technology Laboratory (NETL) under the contract DE-FE0001127.

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

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

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