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Open AccessArticle

Vortex Beam Encoded All-Optical Logic Gates Based on Nano-Ring Plasmonic Antennas

by Houquan Liu 1,2,*, Hongchang Deng 1,2,*, Shijie Deng 1,2, Chuanxin Teng 1,2, Ming Chen 1,2 and Libo Yuan 1,2
1
Photonics Research Center, School of Electronic Engineering and Automation, Guilin University of Electronics Technology, Guilin 541004, China
2
Guangxi Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronics Technology, Guilin 541004, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1649; https://doi.org/10.3390/nano9121649
Received: 14 October 2019 / Revised: 12 November 2019 / Accepted: 16 November 2019 / Published: 20 November 2019
(This article belongs to the Special Issue Advances in Photonic and Plasmonic Nanomaterials)
Vortex beam encoded all-optical logic gates are suggested to be very important in future information processing. However, within current logic devices, only a few are encoded by using vortex beams and, in these devices, some space optical elements with big footprints (mirror, dove prism and pentaprism) are indispensable components, which is not conducive to device integration. In this paper, an integrated vortex beam encoded all-optical logic gate based on a nano-ring plasmonic antenna is proposed. In our scheme, by defining the two circular polarization states of the input vortex beams as the input logic states and the normalized intensity of the plasmonic field at the center of the nano-ring as the output logic states, OR and AND (NOR and NAND) logic gates are realized when two 1st (1st) order vortex beams are chosen as the two input signals; and a NOT logic gate is obtained when one 1st order vortex beam is chosen as the input signal. In addition, by defining the two linear polarization states (x and y polarization) of the input vortex beams as the two input logic states, an XNOR logic gate is realized when two 1st order vortex beams are chosen as the two input signals. View Full-Text
Keywords: all-optical logic gates; vortex beam; plasmonic all-optical logic gates; vortex beam; plasmonic
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MDPI and ACS Style

Liu, H.; Deng, H.; Deng, S.; Teng, C.; Chen, M.; Yuan, L. Vortex Beam Encoded All-Optical Logic Gates Based on Nano-Ring Plasmonic Antennas. Nanomaterials 2019, 9, 1649.

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