Surface-normal plasmonic modulator using sub-wavelength metal grating on electro-optic polymer thin film

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

20 Scopus Citations
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  • Fanghui Ren
  • Ming Li
  • Qian Gao
  • William Cowell
  • Alan X. Wang


Original languageEnglish
Pages (from-to)116-120
Journal / PublicationOptics Communications
Online published23 Apr 2015
Publication statusPublished - 1 Oct 2015
Externally publishedYes


In this work, we present the design, fabrication, and characterization of a surface-normal plasmonic modulator using sub-wavelength metal grating. The device consists of a 1.77 μm efficiently poled electro-optic polymer film, which is sandwiched between a plasmonic grating and an indium-tin oxide film. A strong Fano resonance with a sharp plasmonic bandgap at 1522 nm wavelength was observed and electro-optical modulation was demonstrated based on the refractive index modulation of the polymer film. With future improvement in lowering the driving voltage and increasing the modulation depth, this hybrid organic/plasmonic modulator can readily expand into modulator arrays for three dimensional optical interconnects.

Research Area(s)

  • Electro-optical modulator, Fano resonance, Polymer, Surface plasmons

Citation Format(s)