Hybrid waveguide based long-range surface plasmon biosensor

Mohseni, Hooman, Ma, Youqiao, Farrell, Gerald, Semenova, Yuliya, Wu, Qiang, Agahi, Massoud H. and Razeghi, Manijeh (2013) Hybrid waveguide based long-range surface plasmon biosensor. In: Proceedings of SPIE 8812, Biosensing and Nanomedicine VI. SPIE, Bellingham, 88120T. ISBN 9780819496621

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Official URL: http://dx.doi.org/10.1117/12.2024172

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.

Item Type: Book Section
Subjects: F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Ay Okpokam
Date Deposited: 29 May 2015 11:48
Last Modified: 24 Oct 2017 08:53
URI: http://nrl.northumbria.ac.uk/id/eprint/22680

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