Title :
Surface Plasmon Bragg Gratings Formed in Metal-Insulator-Metal Waveguides
Author :
Han, Zhanghua ; Forsberg, Erik ; He, Sailing
Author_Institution :
Zhejiang Univ., Hangzhou
Abstract :
We propose and numerically analyze surface plasmon Bragg gratings formed by a periodic variation of the width of the insulator in a metal-insulator-metal waveguide. The results indicate that very good filtering characteristics can be achieved in these plasmonic Bragg gratings. To suppress the sidelobes in the transmission spectrum, we further propose S-shaped Bragg cells and find better performance. By introducing a defect into the grating, a defect state with high Q-value is introduced into the bandgap and a Fabry-Peacuterot-like structure is formed
Keywords :
Bragg gratings; MIM structures; optical planar waveguides; surface plasmons; Bragg gratings; Fabry-Perot-like structure; bandgap; defect state; metal-insulator-metal waveguides; surface plasmon; Bragg gratings; Dielectrics and electrical insulation; Electromagnetic waveguides; Filtering; Metal-insulator structures; Optical propagation; Optical surface waves; Optical waveguides; Plasmons; Surface waves; Metal-insulator-metal (MIM) waveguide; surface plasmon; waveguide Bragg grating (WBG);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.889036
