Refractive Index Measurements of Ethanol-Water Binary Liquid Solutions Using a Graded-Index Fiber Tip Sensor

• Type: Article in International Scientific Journal
• Date: 2023

Authors

Soares, L (Author) Other; Cunha, C (Author) Other; Novais, S (Author) Other; A. Ferreira (Author) FEUP; Frazao, O (Author) FCUP; Susana Silva (Author) FCUP

Journal

Title: IEEE Sensors Letters

Vol. 7

Pages: 1-4

Publisher: IEEE

Indexing

ISI Web of Knowledge - 0 Citations

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Other information

Authenticus ID: P-00Y-YB0

DOI: 10.1109/lsens.2023.3303079

Abstract (EN): The refractometric analysis of ethanol-water mixtures is hampered because this type of binary solution does not present a linear behavior. In this letter, a multimode graded-index fiber (GIF) tip sensor for the measurement of ethanol in binary liquid solutions of ethanol-water is proposed. The proof is fabricated by the fusion-splicing of a 500 mu m GIF to a single-mode fiber (SMF), and it operates as a refractometric sensor in reflection. To evaluate the prove potential to detected ethanol variations, samples of ethanol-water mixtures were measured at different temperatures (20 degrees C-60 degrees C). The samples have different %(v/v) of ethanol, in a range between 0% and 100%.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4