Broad band focusing and demultiplexing of in-plane propagating surface plasmons

Lin Li, Tao Li*, Shuming Wang, Shining Zhu, Xiang Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

On the basis of a novel phase modulation method by in-plane diffraction processes, a well-designed nanoarray on metal surface is proposed to realize a broad band focusing (bandwidth ∼100 nm) and a demultiplexing element (resolution ∼12 nm) of surface plasmon polariton (SPP) waves. Moreover, sublattice arrays are developed to achieve an improved demultiplexer and confocal SPP beams. The proposed scheme with implemented functionalities is designed totally in planar dimension, which is free of the SPP coupling process and indicates more practical application in photonic integrations.

Original languageEnglish
Pages (from-to)4357-4361
Number of pages5
JournalNano Letters
Volume11
Issue number10
DOIs
StatePublished - 12 Oct 2011
Externally publishedYes

Keywords

  • Surface plasmon polariton
  • broad band focusing
  • in-plane photonic integration
  • wavelength demultiplexer

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