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Sensors 2010, 10(8), 7082-7088; doi:10.3390/s100807082
Article

Volume Fraction Determination of Binary Liquid Mixtures by Measurement of the Equalization Wavelength

1
,
1,* , 1
 and
2
1 Department of Physics, University of Žilina, Univerzitná 1, SK- 01026, Žilina, Slovakia 2 Institute of Photonic Technology Jena, D-07745, Jena, Germany
* Author to whom correspondence should be addressed.
Received: 18 June 2010 / Revised: 10 July 2010 / Accepted: 15 July 2010 / Published: 27 July 2010
(This article belongs to the Section Chemical Sensors)
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Abstract

A method for determination of the volume fraction in binary liquid mixtures by measurement of the equalization wavelength of intermodal interference of modes LP01 and LP11 in a liquid core optical fiber is presented in this paper. This method was studied using a liquid core optical fiber with fused silica cladding and a core made up of a binary silicon oil/chloroform liquid mixture with different volume fractions of chloroform. The interference technique used allows us to determine the chloroform volume fraction in the binary mixture with accuracy better than 0.1%. One of the most attractive advantages of presented method is very small volume of investigated mixture needed, as only a few hundred picoliters are necessary for reliable results.
Keywords: intermodal interference; equalization wavelength; mixture volume fraction intermodal interference; equalization wavelength; mixture volume fraction
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Martincek, I.; Pudis, D.; Kacik, D.; Schuster, K. Volume Fraction Determination of Binary Liquid Mixtures by Measurement of the Equalization Wavelength. Sensors 2010, 10, 7082-7088.

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