Manipulating optical signals at sub-wavelength scale by planar arrays of metallic nanospheres: Towards plasmonic interference devices

Details Manipulating optical signals at sub-wavelength scale by planar arrays of metallic nanospheres: Towards plasmonic interference devices Manipulating optical signals at sub-wavelength scale by planar arrays of metallic nanospheres: Towards plasmonic interference devices

2011-07-26

arxiv.org/abs/1107.5247v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures, reported at The 2nd European Topical Meeting on Nanophotonics and Metamaterials (Nanometa), Seefeld, Austr

Scientific paper

We show that interference can be the principle of operation of an all-optical switch and other nanoscale plasmonic interference devices (PIDs). The optical response of two types of planar plasmonic waveguides is studied theoretically: bent chains and Y-shaped configurations of closely-spaced metallic nanospheres. We study symmetric Y-shape arrays as an example of an all-optical switch and demonstrate that effective phase- and amplitude-sensitive control of the output signal can be achieved due to interference effects.

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