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

Katarzyna Karpienko; Maciej S. Wróbel; Małgorzata Jędrzejewska-Szczerska

doi:10.1117/1.OE.53.7.077103

22 July 2014 Determination of refractive index dispersion using fiber-optic low-coherence Fabry–Perot interferometer: implementation and validation

Katarzyna Karpienko, Maciej S. Wróbel, Małgorzata Jędrzejewska-Szczerska

Author Affiliations +

Optical Engineering, Vol. 53, Issue 7, 077103 (July 2014). https://doi.org/10.1117/1.OE.53.7.077103

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.

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Katarzyna Karpienko, Maciej S. Wróbel, and Małgorzata Jędrzejewska-Szczerska "Determination of refractive index dispersion using fiber-optic low-coherence Fabry–Perot interferometer: implementation and validation," Optical Engineering 53(7), 077103 (22 July 2014). https://doi.org/10.1117/1.OE.53.7.077103

Published: 22 July 2014

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