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Intrinsic Fabry-Pérot interferometric (IFPI) fiber pressure sensor
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Paper Abstract

An optical fiber Single/Multi-/Single-mode Intrinsic Fabry-Pérot Interferometer (SMS-IFPI) pressure sensor has been demonstrated using a silica tube-based pressure transducer hermetically sealed by thermal fusion bonding. The sensor, made entirely of fused silica, contains an IFPI strain sensor enclosed by a CO2 laser-bonded outer tube. A sensor prototype is constructed and demonstrated for single point pressure sensing at high temperature (600°C), with temperature compensation achieved through co-location of an SMS-IFPI temperature sensor. The inline geometry and low transmission loss of the SMS-IFPI sensor makes it suitable for frequency division multiplexing (FDM) in a single fiber branch. In future work, we envision multiplexing of up to eight such IFPI pressure sensors along a single fiber branch for quasi-distributed pressure measurement.

Paper Details

Date Published: 23 April 2010
PDF: 9 pages
Proc. SPIE 7677, Fiber Optic Sensors and Applications VII, 76770T (23 April 2010); doi: 10.1117/12.851906
Show Author Affiliations
Cheng Ma, Virginia Polytechnic Institute and State Univ. (United States)
Ning Wang, China Univ. of Petroleum (China)
Evan M. Lally, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)

Published in SPIE Proceedings Vol. 7677:
Fiber Optic Sensors and Applications VII
Alexis Mendez; Henry H. Du; Anbo Wang; Eric Udd; Stephen J. Mihailov, Editor(s)

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