Title :
A Nanoplasmonic High-Pass Wavelength Filter Based on a Metal-Insulator-Metal Circuitous Waveguide
Author :
Zhu, Jia Hu ; Wang, Qi Jie ; Shum, Ping ; Huang, Xu Guang
Author_Institution :
Key Lab. of Photonic Inf. Technol., South China Normal Univ., Guangzhou, China
Abstract :
A nanoplasmonic high-pass wavelength filter consisting of two straight metal-insulator-metal waveguides side-connected with a dielectric islet to form a circuitous waveguide is proposed and simulated numerically by using the finite difference time domain method. The simulation demonstrates that the plasmonic filter is characterized as a high-pass wavelength filter in the transmission spectrum. The cutoff wavelength increases with the increase of the length or the decrease of the width of the dielectric islet. Explanation of the high-pass filtering effect is given with a theoretical expression of the cutoff wavelength.
Keywords :
MIM devices; finite difference time-domain analysis; high-pass filters; nanophotonics; optical waveguide filters; plasmonics; dielectric islet; finite difference time domain method; high-pass filtering effect; metal-insulator-metal circuitous waveguide; nanoplasmonic high-pass wavelength filter; plasmonic filter; transmission spectrum; Dielectrics; Metal-insulator structures; Nanostructured materials; Optical filters; Optical waveguides; Optimized production technology; Plasmons; Surface waves; Integrated optics devices; metal-insulator-metal waveguide; surface plasmons, wavelength filtering;
Journal_Title :
Nanotechnology, IEEE Transactions on
DOI :
10.1109/TNANO.2011.2136385
