https://doi.org/10.1140/epjp/s13360-024-05379-6
Regular Article
Surface plasmon resonance based photonic crystal fiber sensor for bio samples detection
Faculty of Physics, University of Tabriz, Tabriz, Iran
Received:
15
February
2024
Accepted:
19
June
2024
Published online:
3
July
2024
A novel photonic crystal fiber sensor based on surface plasmon resonance with a broad detection range was designed. Gold is selected as the plasmonic material with an external coating approach which simplifies the detection process and device fabrication. The sensing characteristics were investigated using the finite element method (FEM). Because both the x and y-polarized modes result in nearly the same loss properties, the obtained responses are declared for the y-polarized mode. The confinement loss analysis leads to maximum wavelength and amplitude sensitivities of 30,000 
and 7174 
. Moreover, high figure of merit and good resolution values of 768.64 and 
are calculated for the analyte refractive index (RI) range from 1.33 to 1.42. Good performance parameters beside to fabrication simplicity introduce the proposed sensor as a suitable platform for the precise detection of various bio samples.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. 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.
