期刊
IEEE SENSORS LETTERS
卷 7, 期 9, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSENS.2023.3303079
关键词
Ethanol; Refractive index; Sensors; Temperature measurement; Optical fiber sensors; Temperature sensors; Power generation; Sensor integration; refractometric sensor; binary solutions; ethanol-water; fiber tip; graded-index fiber (GIF)
This letter proposes a multimode graded-index fiber tip sensor for measuring ethanol in ethanol-water mixtures, which can accurately measure variations in ethanol content at different temperatures.
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%.
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