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Simulation and analysis of a sub-wavelength grating based multilayer surface plasmon resonance biosensor

journal contribution
posted on 2013-01-01, 00:00 authored by Saiful Islam, Abbas KouzaniAbbas Kouzani
This paper presents a subwavelength grating based multilayer surface plasmon resonance biosensor (SPRB) which includes a periodic array of subwavelength grating on top of a layer of graphene sheet in the biosensor. The proposed biosensor is named grating-graphene SPRB (GG-SPRB). The aim of the proposed multilayer structure is to improve the sensitivity of the SPRB through monitoring of the biomolecular interactions of DNA hybridization. Significant sensitivity improvement is obtained for the GG-SPRB compared with the conventional SPRB. The result of the numerical investigation of the GG-SPRB is presented and compared with a theoretically developed multilayer matrix formalism, and a good agreement has been observed. In addition, an optimization of the grating dimensions including volume factor, grating depth, grating angle, grating period, and grating geometry (e.g., rectangular, sinusoidal and triangular) is presented. The outcome of the investigation presented in this paper identifies desired functioning conditions corresponding to the best design parameters for the GG-SPRB.

History

Journal

Journal of lightwave technology

Volume

31

Issue

9

Pagination

1388 - 1398

Publisher

IEEE

Location

Piscataway, N.J.

ISSN

0733-8724

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2013, IEEE

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