Multi-layered dielectric cladding plasmonic microdisk resonator filter and coupler

Bo Han Cheng, Yung Chiang Lan

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This work develops the plasmonic microdisk filter/coupler, whose effectiveness is evaluated by finite-difference time-domain simulation and theoretical analyses. Multi-layer dielectric cladding is used to prevent the scattering of surface plasmons (SPs) from a silver microdisk. This method allows devices that efficiently perform filter/coupler functions to be developed. The resonant conditions and the effective refractive index of bounded SP modes on the microdisk are determined herein. The waveguide-to-microdisk distance barely influences the resonant wavelength but it is inversely related to the bandwidth. These findings are consistent with predictions made using the typical ring resonator model.

Original languageEnglish
Article number020701
JournalPhysics of Plasmas
Volume20
Issue number2
DOIs
Publication statusPublished - 2013 Feb

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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