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Erschienen in:
2017 | OriginalPaper | Buchkapitel
Designing a Biosensor Using a Photonic Quasi-Crystal Fiber with Fan-Shaped Analyte Channel
verfasst von : Suoda Chu, Nakkeeran Kaliyaperumal, G. Melwin, Sumeet S. Aphale, P. Ramesh Babu Kalivaradhan, Senthilnathan Karthikrajan
Erschienen in: Modeling, Design and Simulation of Systems
Verlag: Springer Singapore
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Abstract
In this research work, we design a biosensor using a six-fold photonic quasi-crystal fiber with a fan-shaped analyte channel based on surface plasmon resonance (SPR). We numerically analyze both the dispersion relations and loss spectra for three different refractive indices of the analyte, \(n_{a}\), using finite element method. Through optimization of the structure, we find that the proposed biosensor exhibits a maximum refractive index sensitivity of 3200 nm/RIU and a resolution of \(3.12\times 10^{-5}\) RIU when \(n_a\) is increased from 1.41 to 1.43. We infer that the coupling between the core mode and SPR mode can be explained as a complete coupling of the loss matching condition or an incomplete coupling of the phase matching condition. Owing to the ease of fabrication of the proposed biosensor with an average sensitivity of 2250 nm/RIU, we envisage that this biosensor could turn out to be a versatile instrument for detecting the biomolecules.