Article

Plasmonics

, Volume 6, Issue 2, pp 337-343

First online:

Impedance Matching Induce High Transmission and Flat Response Band-Pass Plasmonic Waveguides

  • Yi XuAffiliated withNonlinear Physics Centre and Centre for Ultra-high-bandwidth Devices for Optical Systems (CUDOS), Research School for Physics and Engineering, Australian National UniversityLaboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University Email author 
  • , Andrey E. MiroshnichenkoAffiliated withNonlinear Physics Centre and Centre for Ultra-high-bandwidth Devices for Optical Systems (CUDOS), Research School for Physics and Engineering, Australian National University
  • , Sheng LanAffiliated withLaboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University
  • , Qi GuoAffiliated withLaboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University
  • , Li-Jun WuAffiliated withLaboratory of Photonic Information Technology, School for Information and Optoelectronic Science and Engineering, South China Normal University Email author 

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Abstract

We consider a model utilizing the concept of impedance matching, which can be applied to design the coupled cascaded plasmonic cavity waveguide with desired properties. We use a transfer matrix method to obtain its transmission and dispersion diagrams. Base on this method, we demonstrate that a band-pass metal–dielectric–metal plasmonic filter with quasi-flat group velocity and tunable bandwidth can be achieved.

Keywords

Surface plasmons Impedance matching Wavelength filtering