Tunable band-pass plasmonic waveguide filters with nanodisk resonators
- 5 August 2010
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 18 (17), 17922-17927
- https://doi.org/10.1364/oe.18.017922
Abstract
A novel and simple plasmonic filter based on metal-insulator-metal plasmonic waveguides with a nanodisk resonator is proposed and investigated numerically. By the resonant theory of disk-shaped nanocavity, we find that the resonance wavelengths can be easily manipulated by adjusting the radius and refractive index of the nanocavity, which is in good agreement with the results obtained by finite-difference time-domain (FDTD) simulations. In addition, the bandwidths of resonance spectra are tunable by changing the coupling distance between the nanocavity and waveguides. This result achieved by FDTD simulations can be accurately analyzed by temporal coupled mode theory. Our filters have important potential applications in high-density plasmonic integration circuits.Keywords
This publication has 25 references indexed in Scilit:
- Design and properties of dielectric surface plasmon Bragg mirrorsOptics Express, 2010
- A subwavelength coupler-type MIM optical filterOptics Express, 2009
- All-optical switching in subwavelength metallic grating structure containing nonlinear optical materialsOptics Letters, 2008
- Light in tiny holesNature, 2007
- Optical Bistability in Nonlinear Surface-Plasmon Polaritonic CrystalsPhysical Review Letters, 2006
- Bends and splitters in metal-dielectric-metal subwavelength plasmonic waveguidesApplied Physics Letters, 2005
- Optics Letters, 2005
- Surface plasmon polariton based modulators and switches operating at telecom wavelengthsApplied Physics Letters, 2004
- Surface plasmon polariton propagation in nanoscale metal gap waveguidesOptics Letters, 2004
- Surface plasmon subwavelength opticsNature, 2003