9 December 1999 Multiwavelength analysis of absorbance sensors
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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.
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Artur Dybko, Wojciech Wroblewski, Zbigniew Brzozka, "Multiwavelength analysis of absorbance sensors", Proc. SPIE 3860, Fiber Optic Sensor Technology and Applications, (9 December 1999); doi: 10.1117/12.372993; https://doi.org/10.1117/12.372993
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