We demonstrate an innovative concept for nanoscale electro-optic switching. It exploits the frequency shift of a narrow-band Fano resonance mode in a plasmonic planar metamaterial induced by a change in the dielectric properties of an adjacent chalcogenide glass layer. An electrically stimulated transition between amorphous and crystalline forms of the glass brings about a 150 nm shift in the near-infrared resonance providing transmission modulation with a contrast ratio of 4:1 in a device of subwavelength thickness.

Topics
Plasmonics, Electro-optics, Metamaterials, Dielectric properties, Amorphous materials, Optical properties, Absorption line, Optical metrology, Optical computing, Fano resonances
© 2010 American Institute of Physics.
2010
American Institute of Physics
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