U-Shaped POF Sensor for Ethanol/Methanol Determination


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Tabaru T. E. , Hayber Ş. E.

Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi, vol.37, no.1, pp.149-156, 2021 (National Refreed University Journal)

  • Publication Type: Article / Article
  • Volume: 37 Issue: 1
  • Publication Date: 2021
  • Title of Journal : Erciyes Üniversitesi Fen Bilimleri Enstitüsü Dergisi
  • Page Numbers: pp.149-156

Abstract

In this study, U-shaped fiber optic sensor tips sensitive to refractive index (RI) change were produced, and its performance analyses were carried out. Three sensor tips were used to measure ethanol/methanol-water mixtures in concentrations from 0% to 16.66%. The ethanol sensor tip was able to detect the RI change of 4×10-4 RIU. Its maximum sensitivity is 7.71 mV/RIU, and its linearity is 0.9985. The methanol sensor tip was able to detect the RI change of 1×10-4 RIU. Its maximum sensitivity is 28.49 mV/RIU, and its linearity is 0.9969. Each sensor tips determine the change of 1.41% concentration in the mixtures. Moreover, the results show that it can provide high precision in the measurement of ethanol/methanolwater mixtures and achieve satisfying stability and repeatability