2 June 2011 Thermally regenerated fiber Bragg gratings in twin-air-hole microstructured fibers for high temperature pressure sensing
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Abstract
We present thermally regnenerated fiber Bragg grating in air-hole microstructured fibers for high temperature hydrostatic pressure sensing application. Saturated type I gratings were inscribed in hydrogen-loaded two-hole optical fibers using 248-nm KrF laser, and regenerated during annealing at 800ºC. The fiber Bragg grating resonance wavelength shift and peak splits were studied as a function of external hydrostatic pressure from 15 psi to 2400 psi. The grating pressure sensor shows stable and reproducible operation up to 800ºC. This paper demonstrates a multiplexible pressure sensor network technology for high temperature harsh environment using a single fiber feedthrough.
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Tong Chen, Tong Chen, Rongzhang Chen, Rongzhang Chen, Charles Jewart, Charles Jewart, Botao Zhang, Botao Zhang, John Canning, John Canning, Kevin Cook, Kevin Cook, Kevin P. Chen, Kevin P. Chen, } "Thermally regenerated fiber Bragg gratings in twin-air-hole microstructured fibers for high temperature pressure sensing", Proc. SPIE 8028, Fiber Optic Sensors and Applications VIII, 802807 (2 June 2011); doi: 10.1117/12.884994; https://doi.org/10.1117/12.884994
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