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Open AccessArticle

Design an All-Optical Combinational Logic Circuits Based on Nano-Ring Insulator-Metal-Insulator Plasmonic Waveguides

Department of Electrical Engineering, College of Engineering, University of Baghdad, Baghdad 10001, Iraq
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Photonics 2019, 6(1), 30; https://doi.org/10.3390/photonics6010030
Received: 17 February 2019 / Revised: 14 March 2019 / Accepted: 15 March 2019 / Published: 19 March 2019
In this paper, we propose, analyze and simulate a new configuration to simulate all-optical combinational logic functions based on Nano-rings insulator-metal-insulator (IMI) plasmonic waveguides. We used Finite Element Method (FEM) to analyze the proposed plasmonic combinational logic functions. The analyzed combinational logic functions are Half-Adder, Full-Adder, Half-Subtractor, and Comparator One-Bit. The operation principle of these combinational logic functions is based on the constructive and destructive interferences between the input signal(s) and control signal. Numerical simulations show that a transmission threshold exists (0.25) which allows all proposed four plasmonic combinational logic functions to be achieved in one structure. As a result, the transmission threshold value measures the performance of the proposed plasmonic combinational logic functions. We use the same structure with the same dimensions at 1550 nm wavelength for all proposed plasmonic combinational logic functions. The proposed all-optical combinational logic functions structure contributes significantly to photonic integrated circuits construction and all-optical signal processing nano-circuits. View Full-Text
Keywords: all-optical combinational logic functions; surface plasmon polaritons (SPP); IMI plasmonic waveguides all-optical combinational logic functions; surface plasmon polaritons (SPP); IMI plasmonic waveguides
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Abdulnabi, S.H.; Abbas, M.N. Design an All-Optical Combinational Logic Circuits Based on Nano-Ring Insulator-Metal-Insulator Plasmonic Waveguides. Photonics 2019, 6, 30.

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