High performance of straight and U-shaped probe microfiber sensors for sucrose solution detection applications

Optical Fiber Sensor Microfiber U-shape microfiber Sucrose Detection

Authors

  • Retna Apsari
    retna-a@fst.unair.ac.id
    (H-index: 11; Scopus ID: 36020108300) Department of Physics, Faculty of Science and Technology, Universitas Airlangga, Indonesia https://orcid.org/0000-0002-3597-5938
  • M Zulkarnaen Magister of Biomedical Engineering, Department of Physics, Faculty of Science and Technology, Universitas Airlangga, Surabaya, Indonesia
  • Syahidatun Na'imah Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Brawijaya, Malang, Indonesia
  • Herri Trilaksana Department of Physics,Faculty of Science and Technology, Universitas Airlangga, Surabaya, Indonesia
  • M Yasin Department of Physics,Faculty of  Science and Technology, Universitas Airlangga, Surabaya, Indonesia
  • Sulaiman W. Harun Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur, Malaysia
May 31, 2024

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A low cost, highly sensitive sensor with easy fabrication has been successfully developed to detect variations in the concentration of sucrose solutions using a microfiber probe sensor. The microfiber probe was fabricated using a flame brushing mixture of butane and oxygen with single-mode optical fiber material and pulled on both sides to achieve a size of 16.48 µm. These microfiber probes were characterized into two sensor probe shapes: straight and u-shaped, to measure variations in the sucrose solution concentration. The results for both probe shapes showed a decrease in peak output intensity and a shift in peak wavelength as the sucrose concentration increased from 0.5% to 3%. The straight shape exhibited a sensitivity of 0.241 dBm/% with a slope linearity of 99.5% and a resolution of 0.0415%, while the U-shape had a sensitivity of 2.692 dBm/% with a slope linearity of 90.6% and a resolution of 0.0030%. The measurement spectra results indicated significant differences in u-shape at each concentration. In conclusion, both microfiber sensor probe shapes exhibited excellent performance and are suitable for use as chemical sensors to measure variations in solutions.