Intrinsic Fabry-Pérot interferometric (IFPI) fiber pressure sensor

Cheng Ma; Ning Wang; Evan M. Lally; Anbo Wang

doi:10.1117/12.851906

23 April 2010 Intrinsic Fabry-Pérot interferometric (IFPI) fiber pressure sensor

Cheng Ma, Ning Wang, Evan M. Lally, Anbo Wang

Proceedings Volume 7677, Fiber Optic Sensors and Applications VII; 76770T (2010) https://doi.org/10.1117/12.851906
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

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.

Citation Download Citation

Cheng Ma, Ning Wang, Evan M. Lally, and Anbo Wang "Intrinsic Fabry-Pérot interferometric (IFPI) fiber pressure sensor", Proc. SPIE 7677, Fiber Optic Sensors and Applications VII, 76770T (23 April 2010); https://doi.org/10.1117/12.851906

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