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Keywords:

  • gold nanowires;
  • grating structures;
  • optical switches;
  • plasmonic resonance;
  • waveguides
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Optical switching via waveguided gold nanowires is achieved. This is possible due to the transient red-shift of the plasmon resonance of the gold nanowires under strong optical excitation and its coupling with the waveguide resonance mode. The effect can be tuned over a broad range in the visible region by changing the angle of incidence.