Design and Simulation of Optical XNOR Logic Gate Based on MEMS Technology

Abstract

Prototypes of computers, or processors, were based almost exclusively on mechanical devices. Although electronic processors have become increasingly dominant over the past few decades, Recent advances in the technology of manufacturing 3D electromechanical components in micro and nano sizes have created new techniques for building complex microstructures that are of interest to researchers in new research In the field of mechanical computing. In this paper, we present a new XNOR logic gate design approach that can be built based on micro-electro-mechanical logic gates. One of the main advantages of this method is the ability to combine multi-physical as well as compatibility with the CMOS manufacturing process, as well as lower power consumption compared to logic gates consisting of several CMOS transistors. In this design, we have designed and simulated an XNOR logic gate using the multi-physics capability of Comsol-software and as well as using optical, electronic, mechanical and electro-static physics, whose inputs will be both electrical and optical signals. In this paper, according to the above selected design, by modeling and simulating different input modes of this logic gate, we examine the effect of each mode on the output of the gate as well as other features such as structure life, power consumption and resonant frequency. The proposed gate structure has a resonant frequency of 46 kHz and is highly reliable because it can operate without mechanical connection of the MEMS operator to logic inputs.