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Type: Journal article
Title: Stability of grating-based optical fiber sensors at high temperature
Author: Warren-Smith, S.
Schartner, E.
Nguyen, L.
Otten, D.
Yu, Z.
Lancaster, D.G.
Ebendorff-Heidepriem, H.
Citation: IEEE Sensors Journal, 2019; 19(8):2978-2983
Publisher: Institute of Electrical and Electronics Engineers
Issue Date: 2019
ISSN: 1530-437X
Statement of
Stephen C. Warren-Smith, Erik P. Schartner, Linh V. Nguyen, Dale E. Otten, Zheng Yu, David G. Lancaster, and Heike Ebendorff-Heidepriem
Abstract: We present a comparison of four different grating-based optical fiber high temperature sensors. Three of the sensors are commercially available and include a heat treated, twisted (chiral) pure-silica microstructured optical fiber, a femtosecond laser written Bragg grating in a depressed cladding single mode fiber and a regenerated fiber Bragg grating. We compare these to an in-house fabricated femtosecond laser ablation grating in a pure-silica microstructured optical fiber. We have tested the sensors in increments of 100°C up to 1100°C for durations of at least 24 hours each. All four sensors were shown to be operational up to 900°C, however the two sensors based on pure-silica microstructured fiber displayed higher stability in the reflected sensor wavelength compared to the other sensors at temperatures of 700°C and higher. We further investigated high temperature stability of silica suspended-core fibers with femtosecond laser inscribed ablation gratings, which show improved stability up to 1050°C following thermal annealing. This investigation can be used as a guide for selecting fiber types, packaging, and grating types for high temperature sensing applications.
Keywords: Optical fiber sensors; fiber Bragg gratings; temperature measurement
Rights: © 2018 IEEE.
RMID: 0030108151
DOI: 10.1109/JSEN.2019.2890847
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Appears in Collections:IPAS publications
Physics publications

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