Title :
The Transmission Characteristic of Metal–Dielectric–Metal Slot Waveguide-Based Nanodisk Cavity With Gain Medium
Author :
Yan Liu ; Jing Yan ; Genquan Han
Author_Institution :
Key Lab. of Optoelectron. Technol. & Syst., Chongqing Univ., Chongqing, China
Abstract :
We theoretically investigate the propagation of surface plasmon polaritons (SPPs) for the metal-dielectric-metal slot waveguide coupled to a disk cavity filled with gain material. The transmission and reflection characteristics of the resonant structure are numerically analyzed based on coupled-mode theory. The influence of structure parameters on the spectra of transmission is investigated using a finite-element method. In addition, the incorporation of gain medium can compensate for the loss from metal and, thus, enable the loss-negligible SPP propagation in near-infrared wavelengths, which makes a novel approach of optical switches and lasers based on SPPs possible in the planar optoelectronic compact integration.
Keywords :
MIM structures; coupled mode analysis; finite element analysis; infrared spectra; nanophotonics; optical resonators; optical waveguides; polaritons; reflectivity; surface plasmons; coupled-mode theory; disk cavity; finite-element method; gain material; gain medium; lasers; metal-dielectric-metal slot waveguide-based nanodisk cavity; near-infrared wavelengths; optical switches; planar optoelectronic compact integration; reflection characteristics; resonant structure; surface plasmon polaritons propagation; transmission characteristics; Cavity resonators; Metals; Optical waveguides; Plasmons; Propagation losses; Waveguide theory; Metal-dielectric-metal waveguide; Metal???dielectric???metal waveguide; Plamonic; plamonic;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2015.2406766
