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Proceedings Paper

Suspended-core optical fibres for organic dye absorption spectroscopy
Author(s): Barbara Wajnchold; Ada Umińska; Michał Grabka; Dariusz Kotas; Szymon Pustelny; Wojciech Gawlik
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Paper Abstract

In this paper, we report on our study of UV-VIS absorption spectroscopy in suspended-core optical fibres (SCFs) filled with organic-dye solutions. We compare two different dye classes, the anionic dye - bromophenol blue sodium salt (BB) and cationic dye - oxazine 725 perchlorate (OX). While the results obtained with BB are in a good agreement with the spectra measured in a standard reference cuvette, those obtained with OX are different and reveal much stronger absorption of light than in cuvettes. This stronger absorption indicates accumulation of the dye molecules on the short section of the core close to the end of the fibre. This observation demonstrates difference in physicochemical properties of the two dye classes and is important for the development of chemical sensors based on SCFs.

Paper Details

Date Published: 20 May 2013
PDF: 5 pages
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87941B (20 May 2013); doi: 10.1117/12.2026019
Show Author Affiliations
Barbara Wajnchold, Jagiellonian Univ. in Krakow (Poland)
Ada Umińska, Jagiellonian Univ. in Krakow (Poland)
Michał Grabka, Jagiellonian Univ. in Krakow (Poland)
Dariusz Kotas, Jagiellonian Univ. in Krakow (Poland)
Szymon Pustelny, Jagiellonian Univ. in Krakow (Poland)
Wojciech Gawlik, Jagiellonian Univ. in Krakow (Poland)

Published in SPIE Proceedings Vol. 8794:
Fifth European Workshop on Optical Fibre Sensors
Leszek R. Jaroszewicz, Editor(s)

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