Manipulating Surface Plasmon Polaritons in a 2-D T-Shaped Metal–Insulator–Metal Plasmonic Waveguide With a Joint Cavity

Author

Wang, Yueke ; Zhang, Xueru ; Wang, Jicheng ; Liu, Jianlong ; Wang, Yuxiao ; Yang, Kun ; Song, Yinglin

Author_Institution

Dept. of Phys., Harbin Inst. of Technol., Harbin, China

Volume

22

Issue

17

fYear

2010

Firstpage

1309

Lastpage

1311

Abstract

A 2-D T-shaped metal-insulator-metal plasmonic waveguide with a joint cavity is introduced. The field distribution of the structure is investigated by using the finite-difference time-domain (FDTD) method. It is found that the surface plasmon polaritons´ splitting ratio changes periodically as the joint cavity is moved. The period and maximum for the splitting ratio increase with increasing the width of the joint cavity. The results of the splitting performance obtained by the FDTD agree well with our semi-analytic model based on the scattering matrix theory.

Keywords

MIM structures; S-matrix theory; finite difference time-domain analysis; optical waveguides; plasmonics; polaritons; surface plasmons; 2D T-shaped metal-insulator-metal plasmonic waveguide; FDTD; field distribution; finite difference time domain method; joint cavity; scattering matrix theory; surface plasmon polaritons; Electromagnetic waveguides; Finite difference methods; Metal-insulator structures; Optical filters; Optical scattering; Optical surface waves; Optical waveguides; Plasmons; Surface waves; Time domain analysis; Cavity; metal–insulator–metal (MIM) device; surface plasmons; waveguide junction;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2010.2053531

Filename

5491076