A Nanoplasmonic High-Pass Wavelength Filter Based on a Metal-Insulator-Metal Circuitous Waveguide

Author

Zhu, Jia Hu ; Wang, Qi Jie ; Shum, Ping ; Huang, Xu Guang

Author_Institution

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

Volume

10

Issue

6

fYear

2011

Firstpage

1357

Lastpage

1361

Abstract

A nanoplasmonic high-pass wavelength filter consisting of two straight metal-insulator-metal waveguides side-connected with a dielectric islet to form a circuitous waveguide is proposed and simulated numerically by using the finite difference time domain method. The simulation demonstrates that the plasmonic filter is characterized as a high-pass wavelength filter in the transmission spectrum. The cutoff wavelength increases with the increase of the length or the decrease of the width of the dielectric islet. Explanation of the high-pass filtering effect is given with a theoretical expression of the cutoff wavelength.

Keywords

MIM devices; finite difference time-domain analysis; high-pass filters; nanophotonics; optical waveguide filters; plasmonics; dielectric islet; finite difference time domain method; high-pass filtering effect; metal-insulator-metal circuitous waveguide; nanoplasmonic high-pass wavelength filter; plasmonic filter; transmission spectrum; Dielectrics; Metal-insulator structures; Nanostructured materials; Optical filters; Optical waveguides; Optimized production technology; Plasmons; Surface waves; Integrated optics devices; metal-insulator-metal waveguide; surface plasmons, wavelength filtering;

fLanguage

English

Journal_Title

Nanotechnology, IEEE Transactions on

Publisher

ieee

ISSN

1536-125X

Type

jour

DOI

10.1109/TNANO.2011.2136385

Filename

5752865