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Proceedings Paper

Multiwavelength analysis of absorbance sensors
Author(s): Artur Dybko; Wojciech Wroblewski; Zbigniew Brzozka
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Paper Abstract

The paper presents a method, which allow increase sensitivity of measurements with fiber optic chemical sensors based on absorbance indicators. This can be especially useful if weak absorbance indicator is utilized. The idea of the measurements is based on two wavelengths specific for the indicator. One wavelength is an analytical and the second -- can be called as a complementary i.e. the absorbance, at this wavelength, changes in opposite direction in comparison to analytical signal. The mathematical combination of these two signals gives enhancement of the sensor dynamic range.

Paper Details

Date Published: 9 December 1999
PDF: 5 pages
Proc. SPIE 3860, Fiber Optic Sensor Technology and Applications, (9 December 1999);
Show Author Affiliations
Artur Dybko, Warsaw Univ. of Technology (Poland)
Wojciech Wroblewski, Warsaw Univ. of Technology (Poland)
Zbigniew Brzozka, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 3860:
Fiber Optic Sensor Technology and Applications
Michael A. Marcus; Brian Culshaw, Editor(s)

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