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Proceedings Paper

Remote gaseous acid sensing within a porphyrin-doped TiO2 sol-gel layer inside a structured optical fibre
Author(s): George Huyang; John Canning; Mattias L. Åslund; Masood Naqshbandi; Danial Stocks; Maxwell J. Crossley
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Paper Abstract

A porphyrin containing sol-gel layer has been deposited within the interior of the channels of a silica structured optical fibre. Gaseous HCl detection based on protonation of the porphyrin and observed as a change in the spectrum is demonstrated. This system is compared to previous work based on an acid sensor within a liquid-core fibre. The signal-to- noise of this type of fibre system shows a higher level of sensitivity than the liquid-core and has a forty-fold acid diffusion rate increase due to the different medium for acidification.

Paper Details

Date Published: 8 September 2010
PDF: 4 pages
Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76531Q (8 September 2010); doi: 10.1117/12.866805
Show Author Affiliations
George Huyang, The Univ. of Sydney (Australia)
John Canning, The Univ. of Sydney (Australia)
Mattias L. Åslund, The Univ. of Sydney (Australia)
Masood Naqshbandi, The Univ. of Sydney (Australia)
Danial Stocks, The Univ. of Sydney (Australia)
Maxwell J. Crossley, The Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 7653:
Fourth European Workshop on Optical Fibre Sensors
José Luís Santos; Brian Culshaw; José Miguel López-Higuera; William N. MacPherson, Editor(s)

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