Control of randomly scattered surface plasmon polaritons for multiple-input and multiple-output plasmonic switching devices

Wonjun Choi, Yonghyeon Jo, Joonmo Ahn, Eunsung Seo, Q-Han Park, Young Min Jhon and Wonshik Choi ()
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Wonjun Choi: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science
Yonghyeon Jo: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science
Joonmo Ahn: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science
Eunsung Seo: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science
Q-Han Park: Korea University
Young Min Jhon: Sensor System Research Center, Korea Institute of Science and Technology
Wonshik Choi: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract Merging multiple microprocessors with high-speed optical networks has been considered a promising strategy for the improvement of overall computation power. However, the loss of the optical communication bandwidth is inevitable when interfacing between optical and electronic components. Here we present an on-chip plasmonic switching device consisting of a two-dimensional (2D) disordered array of nanoholes on a thin metal film that can provide multiple-input and multiple-output channels for transferring information from a photonic to an electronic platform. In this device, the surface plasmon polaritons (SPPs) generated at individual nanoholes become uncorrelated on their way to the detection channel due to random multiple scattering. We exploit this decorrelation effect to use individual nanoholes as independent antennas, and demonstrated that more than 40 far-field incident channels can be delivered simultaneously to the SPP channels, an order of magnitude improvement over conventional 2D patterned devices.

Date: 2017
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DOI: 10.1038/ncomms14636

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