https://doi.org/10.1140/epjp/s13360-025-06815-x
Regular Article
Advanced dual-core photonic crystal fiber sensor: pioneering high-precision gasoline sensing
1
Photonics and Photovoltaic Research Lab (PPRL), Department of Physics and Material Science, Madan Mohan Malaviya University of Technology, 273010, Gorakhpur, India
2
Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, 273010, Gorakhpur, India
3
Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, 273010, Gorakhpur, India
Received:
12
June
2025
Accepted:
30
August
2025
Published online:
8
September
2025
An advanced dual-core photonic crystal fiber (DC-PCF) sensor for the detection of gasoline compounds has been constructed utilizing silica as its substrate material. The sensor features a central elliptical analyte channel surrounded by the concentric circular air holes in the cladding. The introduced PCF is designed to operate within the 2–3 µm wavelength range; its performance was evaluated utilizing the finite element method in COMSOL Multiphysics. The sensor demonstrates remarkable wavelength sensitivities of 24,761.66 nm/RIU for 2-methylpentane (x-polarization) and 24,547.8 nm/RIU for 2-methylbutane (y-polarization). Further, the maximum recorded amplitude sensitivities of 11,264.87 RIU⁻1 and 18,137.88 RIU⁻1 were recorded for the same analytes and respective polarizations. These results highlight the sensor’s high sensitivity to the refractive index changes, along with its compact structure and fabrication simplicity, rendering it very attractive for future applications in gasoline sensing.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
