In this paper few literatures on all-optical adders, reported approximately in last fifteen years,
have been reviewed. Being the key element of arithmetic and logic unit (ALU), adder has …

In this research, an all-optical half-subtractor is designed and simulated using two-
dimensional photonic crystals. First, a photonic crystal structure is created using Si rods in …

A comparator is one of the important combinational logic circuits. An optical comparator was
designed and simulated based on photonic crystals. Point and linear defects were also used …

In this paper, we aim to propose an optical structure for realizing half-adder operation
without using the nonlinear Kerr effect. Constructive and destructive interference of optical …

We review the most important techniques to build logic devices in photonic crystals. In
particular, we evaluated several papers that include different approaches such as self …

This paper explores the design and simulation of a majority gate with three inputs based on
the resonance ring of 2D photonic crystals. The design of this gate uses a ring resonator and …

Optical logic devices are the inevitable need for the future all optical computing and data
processing. In this paper we are going to design and propose an all optical half subtractor …

Fast and compact optoelectronic devices are highly sought after for applications in high-
speed signal processing in optical communication networks. One approach to realizing such …

In this paper we are going to propose and design an all optical full adder based on photonic
crystal. For realizing the proposed structure we will use four nonlinear resonant cavities …

In this paper, we proposed a structure to realize an all-optical digital multiplexer. The
proposed structure had two inputs, one control and one output port. Using the control port …