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Proceedings Paper

Hybrid waveguide based long-range surface plasmon biosensor
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Paper Abstract

An integrated hybrid waveguide coupled long range surface plasmon polaritons (LRSPPs) biosensor is proposed and analyzed by the Finite Element Method (FEM). The influence of the structural parameters on the coupling between the dielectric waveguide (DWG) and LRSPPs modes are numerically investigated. Simulation results show that the resonant coupling wavelength between the DWG and LRSPPs modes is very sensitive to small refractive index changes i.e. the estimated sensitivity is as high as 4180 nm/RIU (refractive index unit). Furthermore, when operating in intensity interrogation, its detection of limit has been shown as small as 3.7 x 10-7 RIU.

Paper Details

Date Published: 11 September 2013
PDF: 6 pages
Proc. SPIE 8812, Biosensing and Nanomedicine VI, 88120T (11 September 2013); doi: 10.1117/12.2024172
Show Author Affiliations
Youqiao Ma, Dublin Institute of Technology (Ireland)
G. Farrell, Dublin Institute of Technology (Ireland)
Y. Semenova, Dublin Institute of Technology (Ireland)
Q. Wu, Dublin Institute of Technology (Ireland)

Published in SPIE Proceedings Vol. 8812:
Biosensing and Nanomedicine VI
Hooman Mohseni; Massoud H. Agahi; Manijeh Razeghi, Editor(s)

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