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Optical Engineering

Determination of refractive index dispersion using fiber-optic low-coherence Fabry–Perot interferometer: implementation and validation
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Paper Abstract

We present the implementation and validation of low-coherence Fabry–Perot interferometer for refractive index dispersion measurements of liquids. A measurement system has been created with the use of four superluminescent diodes with different optical parameters, a fiber-optic coupler and an optical spectrum analyzer. The Fabry–Perot interferometer cavity has been formed by the fiber-optic end and mirror surfaces mounted on a micromechanical stage. The positive result of the validation procedure has been determined through statistical analysis. All obtained results were 99.999% statistically significant and were characterized by a strong positive correlation (r<0.98). The accuracy of the measured result of implemented low-coherence Fabry–Perot interferometer sensor is from 83% to 94%, which proves that the sensor can be used in the measurement of refractive index dispersion of liquids.

Paper Details

Date Published: 22 July 2014
PDF: 8 pages
Opt. Eng. 53(7) 077103 doi: 10.1117/1.OE.53.7.077103
Published in: Optical Engineering Volume 53, Issue 7
Show Author Affiliations
Katarzyna Karpienko, Gdansk Univ. of Technology (Poland)
Maciej S. Wróbel, Gdansk Univ. of Technology (Poland)
Małgorzata Jędrzejewska-Szczerska, Gdansk Univ. of Technology (Poland)

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