Nanoplasmonic triple-wavelength demultiplexers in two-dimensional metallic waveguides

H. Lu, X. M. Liu, L. R. Wang, D. Mao, Y. K. Gong

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

A novel kind of plasmonic wavelength demultiplexers (WDMs) based on two-dimensional metal-insulator-metal waveguides with side coupled nanocavities (SC-NCs) is proposed and numerically investigated. The WDMs contain three waveguide output channels, each of which functions as a dual-stopband plasmonic filter. The demultiplexing wavelengths can be tuned by controlling the lengths and widths of SCNCs. The finite-difference time-domain results can be accurately analyzed by the resonant theory of nanocavity. Our structures have important potential applications for design of WDM systems in highly integrated optical circuits.

Original languageEnglish
Pages (from-to)877-881
Number of pages5
JournalApplied Physics B: Lasers and Optics
Volume103
Issue number4
DOIs
StatePublished - Jun 2011
Externally publishedYes

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