Reversible logic is emerging as an important research area having its application in diverse fields such as low power CMOS design, digital signal processing, cryptography, quantum computing and optical information processing. This paper presents a new 4*4 parity preserving reversible logic gate, IG. The proposed parity preserving reversible gate can be used to synthesize any arbitrary Boolean f...

A compact and simple structure is designed to create an all-optical XOR logic gate using a two-dimensional, photonic crystal lattice. The was implemented three waveguides connected by two nano-resonators. plane wave expansion method used obtain the band gap finite-difference time-domain investigate behavior of electromagnetic field in structure. Examining high contrast ratio high-speed cascade,...

Reversible logic has attracted signi cant attention in recent years. It has applications in low power CMOS, quantum computing, nanotechnology, and optical computing. Traditional gates such as AND, OR, and EXOR are not reversible. In fact NOT is the only reversible gate from the traditional set of gates. Several reversible gates have been proposed. Among them are the controlled NOT (also known a...

The paper analyses the operation of PT Bragg gratings when the dielectric material is considered to be both dispersive and nonlinear and gain and loss are saturable. The paper demonstrates the application of the nonlinear PT Bragg Grating as an optical logic gate and an optical switch.

In present times, the protection of Optical signal data is becoming very important as large amount of internet data is transferred through Optical fibres. The data can be easily protected by encrypting data before transmission. There many different techniques for optical signal encryption. In this paper, we survey on existing methods used in optical signal encryption. Keywords— Fibre Bragg Grat...

All-optical logic gates have proven their significance in the digital world for implementation of high-speed computations. We propose herein a novel structure an all-optical AND gate using concept power combiner based on Y-shaped metal–insulator–metal waveguide with 4 µm × 7 footprint. This design works principle linear interference. The insertion loss and extinction ratio are given as 0.165 14...

This research paper is about advancement in Optical Computing an emerging field of computer design and hardware with very fast speed and performances. The optical Computing (also known as Photonic computing) is a technique based on photons of visible light or infrared region rather than Electrons flowing in electric current which are used to perform digital Computations using electronic logic g...