Theoretical investigation of a nano scale all-optical 1 × 2 demultiplexer

作     者：Saif Hasan Abdulnabi Mohammed Nadhim Abbas 

作者机构：1Department of Electronic and Communications Engineering Faculty of Engineering University of Kufa Iraq 3Department of Computer Technical Engineering College of Information Technology Imam Ja'afar Alsadiq University / Al-Najaf Al-Ashraf Iraq 2Department of Electrical Engineering College of Engineering University of Baghdad Iraq 

出 版 物：《AIP Conference Proceedings》 

年 卷 期：2023年第2651卷第1期

学科分类：07[理学] 0702[理学-物理学] 

摘      要：In this paper, we have suggest, design, and simulate an all optical 1*2 demultiplexer (Demux) depended on Insulator-Metal-Insulator (IMI) plasmonic multilayer structure. The proposed structure offers an operating wavelength at 1550 nm and the design area is (350 nm* 350 nm). In this work, Finite Element Method (FEM) is used by using COMSOL Multiphasic software (version 5.4). The working principle of the proposed device (plasmonic Demux) depends on destructive and constructive interference, which occurs on input signal, selector signal, and control signal. The borderline between Logic 0 and Logic 1 at the output is 0.5 that is called transmission threshold. The performance of the proposed structure is measured by three parameters; Transmission, Extension Ratio, and Modulation Depth (MD). This devise shows, in some cases, the transmission value reaches more than 80%, Extension Ratio (3.5 dB), and very high MD value (97.6%). The proposed structure has a major role in building the arithmetic logic unit (ALU) and photonics integrated circuits (ICs).