All-Optical NOT Gate Based on Nanoring Silver-Air Plasmonic Waveguide

Abstract

In this work, all-optical plasmonic NOT logic gate was proposed by using metal-insulator-metal (MIM) plasmonic waveguides design. This logic gate is numerically analyzed by COMSOL Multiphysics 5.3a. Recently, plasmonics have attracted more attention due to its huge applications in all optical signal processing. Due to it’s highly localization to metallic surfaces, surface plasmon (SP) may have many applications in sub wavelength to guide the optical signal in waveguides to overcome the diffraction limit which considered a big problem in conventional optics. The proposed design of MIM structure is consist of a dielectric waveguides plus metallic claddings, which guide the incident light strongly in the insulator region. Strong localization and relatively simple fabrication make the MIM waveguides the potential key design of Nano-scale all optical devices. Our design consists of symmetric ring structures with straight waveguides which based on MIM structure. All-optical logic gate (NOT gate) behavior is achieved from utilizing the interface between straight waveguides and ring structure waveguides. By switching the activation of the control port, the propagation of the outgoing field in the output waveguide will be changed. As the simulation results show, the proposed structure could operate as an all-optical NOT logic gate. This gate would be a potential component in many applications of all-optical signals processing.

All-Optical Logic Gates Using a Plasmonic MIM Waveguide and Elliptical Ring Resonator

“…The proposed structure can be a good candidate as an all-optical logic gates in optical processing. [17] 2020 [18] 2014 [19] 2018 [20] 2019 [21] 2012 [22] 2018 [23]…”

“…Metal-Insulator-Metal (MIM) plasmonic waveguides are suitable components in signal processing, optimization, information processing and optical communication. Many configurations of MIM have been presented in the literature for designing plasmonic logic gates [17][18][19][20][21][22][23]. In this work, we will design all-optical logic gates based on a MIM waveguides coupled to an elliptical ring resonator (ERR).…”

Plasmonic Logic Gates at Optimum Optical Communications Wavelength

“…In previous years, clear advances have emerged in the field of All-optical devices due to research efforts and studies of surface plasmon polaritons (SPPs) field [1]. SPP All-optical devices, which represent applications of plasmonic phenomena, were able to overcome the problems found in optical devices such as the diffraction limit that appears when the device's size is close to or greater than the light's wavelength that limits the minimum chip size [2], as well as the problems of electronic devices such as low data rate, low speed and heat generation that rises as a result of increased resistance [3], [4], which leads to inability to apply the principle of high frequency and transfer data at a high rate. SPPs represents the interaction between free electrons of metals and electromagnetic waves and propagation happens on metal-dielectric interface as the electrons oscillate at the light frequencies [5], [6], [7].…”

The design, analysis, and simulation of an optimized all-optical AND gate using a Y-shaped plasmonic waveguide for high-speed computing devices

“…Logic gates are the basic building blocks of all digital circuits. Several optical devices like directional coupler (DC), Mach-Zehnder-Interferometer (MZI), power combiners, power splitters are used to realize the several logic gates like AND, OR, NOT, XOR, XNOR, and the universal gates like NAND and NOR [25][26][27][28][29][30][31][32]45]. These all-optical logic gates hence are used to design all the combinational circuits like multiplexers, demultiplexers, code converters, adders and subtractors, parity generators [33][34][35][36][37][38][39][40][41].…”