title: Control of randomly scattered surface plasmon polaritons for multiple-input and multiple-output plasmonic switching devices.
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.
authors.affiliation: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul 02841, Korea.|Department of Physics, Korea University, Seoul 02855, Korea.
authors.forename: Wonjun
authors.identifier: 0000-0002-2447-189X
authors.initials: W
authors.lastname: Choi
authors.affiliation: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul 02841, Korea.|Department of Physics, Korea University, Seoul 02855, Korea.
authors.forename: Yonghyeon
authors.initials: Y
authors.lastname: Jo
authors.affiliation: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul 02841, Korea.|Department of Physics, Korea University, Seoul 02855, Korea.|Sensor System Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea.
authors.forename: Joonmo
authors.initials: J
authors.lastname: Ahn
authors.affiliation: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul 02841, Korea.|Department of Physics, Korea University, Seoul 02855, Korea.
authors.forename: Eunsung
authors.initials: E
authors.lastname: Seo
authors.affiliation: Department of Physics, Korea University, Seoul 02855, Korea.
authors.forename: Q-Han
authors.initials: QH
authors.lastname: Park
authors.affiliation: Sensor System Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea.
authors.forename: Young Min
authors.initials: YM
authors.lastname: Jhon
authors.affiliation: Center for Molecular Spectroscopy and Dynamics, Institute for Basic Science, Seoul 02841, Korea.|Department of Physics, Korea University, Seoul 02855, Korea.
authors.forename: Wonshik
authors.initials: W
authors.lastname: Choi