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

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 operating wavelength at 1550 nm the design area is (350 nm* 350 nm). work, Finite Element Method (FEM) used by using COMSOL Multiphasic software (version 5.4). working principle of device (plasmonic Demux) depends destructive constructive interference, which occurs input signal, selector control signal. borderline between Logic 0 1 output 0.5 that called transmission threshold. performance measured three parameters; Transmission, Extension Ratio, Modulation Depth (MD). This devise shows, in some cases, value reaches more than 80%, Ratio (3.5 dB), very high MD (97.6%). has a major role building arithmetic logic unit (ALU) photonics integrated circuits (ICs).