Optimizing the device model for enhanced sensitivity of the plasmonic sensor

M. A. Butt; S. A. Fomchenkov

doi:10.1117/12.2631748

25 July 2022 Optimizing the device model for enhanced sensitivity of the plasmonic sensor

M. A. Butt, S. A. Fomchenkov

Proceedings Volume 12295, Optical Technologies for Telecommunications 2021; 122950H (2022) https://doi.org/10.1117/12.2631748
Event: Nineteenth International Scientific and Technical Conference "Optical Technologies for Communications", 2021, Samara, Russian Federation

Abstract

For refractive index (RI) sensing, a unique cavity design of racetrack combined circular cavity (CC) constructed on metaldielectric- metal waveguide (W/G) is proposed. The best sensing performance can be achieved by using an optimized cavity design. We used the finite element method (FEM) to numerically assess the device design in this paper. Small changes in the device’s geometric parameter might cause a considerable shift in the device’s sensitivity (S) and figure of merit (F.O.M). The predicted device’s S and F.O.M are 1400 nm/R.I.U and 12.01, respectively. We believe that the sensing device described in this research can be used to recognize biological analytes on-chip.

Citation Download Citation

M. A. Butt and S. A. Fomchenkov "Optimizing the device model for enhanced sensitivity of the plasmonic sensor", Proc. SPIE 12295, Optical Technologies for Telecommunications 2021, 122950H (25 July 2022); https://doi.org/10.1117/12.2631748

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