Applied Physics B

, Volume 103, Issue 4, pp 877–881

Nanoplasmonic triple-wavelength demultiplexers in two-dimensional metallic waveguides

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

DOI: 10.1007/s00340-011-4525-0

Cite this article as:
Lu, H., Liu, X.M., Wang, L.R. et al. Appl. Phys. B (2011) 103: 877. doi:10.1007/s00340-011-4525-0

Abstract

A novel kind of plasmonic wavelength demultiplexers (WDMs) based on two-dimensional metal–insulator–metal waveguides with side coupled nanocavities (SCNCs) 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.

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • H. Lu
    • 1
  • X. M. Liu
    • 1
  • L. R. Wang
    • 1
  • D. Mao
    • 1
  • Y. K. Gong
    • 1
  1. 1.State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’anChina