Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2053531
