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Proceedings Paper

Fiber optic chemical/environmental sensors based on active coatings
Author(s): Michael Krihak; Mahmoud R. Shahriari
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Paper Abstract

Three optically active organic indicators were evaluated for monitoring O2, dissolved H2S and CO. By combining a sol-gel coating with porous fiber technology, a fluorescence sensor was developed for oxygen concentrations less than 1 ppm. A second sol-gel material also possessing fluorescence properties was examined for possible H2S sensing applications. In this instance, the fluorescence of thionin-doped, sol-gel film was quenched upon exposure to ppm-levels of dissolved H2S. Finally, preliminary results concerning the advancement of a potential CO sensor were initialized by directly absorbing the organometallic indicator onto a porous fiber substrate. Even though the minimum sensitivity was a few percent, these results were encouraging since the complex responded reversibly to CO.

Paper Details

Date Published: 29 September 1995
PDF: 10 pages
Proc. SPIE 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII, (29 September 1995); doi: 10.1117/12.221751
Show Author Affiliations
Michael Krihak, Rutgers Univ. (United States)
Mahmoud R. Shahriari, Rutgers Univ. (United States)

Published in SPIE Proceedings Vol. 2508:
Chemical, Biochemical, and Environmental Fiber Sensors VII
Annamaria V. Scheggi, Editor(s)

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