Open AccessAnalysis of optical properties of metal/insulator/metal plasmonic metawaveguide with serial periodic stub resonators
Author(s) -
Toshihide Baba
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.018377
Subject(s) - materials science , resonator , stub (electronics) , refractive index , optics , group velocity , plasmon , diffraction , dispersion relation , metal , optoelectronics , photonic crystal , physics , electronic engineering , engineering , metallurgy
The optical properties of the Au/Al(2)O(3)/Ag plasmonic metawaveguide with serial periodic stub resonators were numerically investigated. The refractive index of this design provides large value by using the ultra thin Al(2)O(3) layer. Therefore, the dispersion relation which has negative group velocity, which is similar to the case of photonic crystals, can be formed in the sub diffraction energy range. The calculation results show the dependences of the negative group velocity dispersion curves on the size of the unit cell and the stub resonators. In addition, effective material properties are presented. From these analyses, it is found that this type of design has the property to strongly modulate the propagating characteristics of light.