A Novel Nanometeric Plasmonic Refractive Index Sensor

Author

Jin, Xiao-Ping ; Huang, Xu-Guang ; Tao, Jin ; Lin, Xian-Shi ; Zhang, Qin

Author_Institution

Lab. of Photonic Inf. Technol., South China Normal Univ., Guangzhou, China

Volume

9

Issue

2

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

134

Lastpage

137

Abstract

A novel surface plasmon-polariton (SPP) refractive index sensor based on the coupling of a split waveguide mode with a cavity mode in the metal is proposed and studied in this paper. Both analytic and simulated results show that the resonant wavelength of the sensor has a linear relationship with the refractive index of materials under sensing. Based on the relationship, the refractive index of the material can be obtained from the detection of the resonant wavelength. The resolution of refractive index of the nanometeric sensor can reach as high as 10^-6, given the wavelength resolution of 0.01 nm. It can be applied to high-resolution biosensor.

Keywords

MIM devices; integrated optics; nanophotonics; nanosensors; optical couplers; optical sensors; optical waveguides; plasmonics; refractive index; surface plasmon resonance; MIM structure; cavity mode; mode coupling; nanometeric plasmonic refractive index sensor; refractive index resolution; resonant wavelength; split waveguide mode; surface plasmon-polariton refractive index sensor; wavelength resolution; Metal–insulator–metal (MIM) waveguide; refractive index; sensor; surface plasmon-polariton (SPP);

fLanguage

English

Journal_Title

Nanotechnology, IEEE Transactions on

Publisher

ieee

ISSN

1536-125X

Type

jour

DOI

10.1109/TNANO.2009.2038909

Filename

5373956