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Planar optical sensor for trichlorofluoromethane
Author(s): Maiko Girschikofsky; Dimitrij Ryvlin; Steffen Hessler; Siegfried R. Waldvogel; Ralf Hellmann
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Paper Abstract

We demonstrate a planar-optical Bragg grating based chemical sensor device for the detection of the environmentally harmful, highly ozone-depleting-substance trichlorofluoromethane. By applying an approximately 100 nm thin layer of differently substituted cyclodextrin-derivatives on top of the sensitive region of the silica-based Bragg grating sensor, supramolecular host-guest interactions of the oligo-saccharide affinity material and the chlorofluorocarbon analyte are favored, leading to a significant increase of the sensitivity towards the airborne pollutant. The all-optical sensor thus allows a reliable online in-situ detection and measurement of trichlorofluoromethane in real-time that features a limit of detection of down to 25 ppm.

Paper Details

Date Published: 12 November 2019
PDF: 6 pages
Proc. SPIE 11197, SPIE Future Sensing Technologies, 111970E (12 November 2019); doi: 10.1117/12.2542013
Show Author Affiliations
Maiko Girschikofsky, Univ. of Applied Sciences Aschaffenburg (Germany)
Dimitrij Ryvlin, Johannes Gutenberg Univ. Mainz (Germany)
Steffen Hessler, Univ. of Applied Sciences Aschaffenburg (Germany)
Siegfried R. Waldvogel, Johannes Gutenberg Univ. Mainz (Germany)
Ralf Hellmann, Univ. of Applied Sciences Aschaffenburg (Germany)


Published in SPIE Proceedings Vol. 11197:
SPIE Future Sensing Technologies
Masafumi Kimata; Christopher R. Valenta, Editor(s)

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