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 …

Photonic crystals are suitable structures for designing various types of optical logic circuits.
In this paper, an all-optical comparator is designed and simulated using two-dimensional …

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 …

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 …

In this paper, a novel design of an all-optical half-adder (HA) based on two two-ring
resonators in a two-dimensional square-lattice photonic crystal (PC) structure without …

In this research, an all-optical NOR gate is designed and simulated based on two-
dimensional photonic crystals. A square lattice has been used to design this structure. This …

The advanced technological development of photonics is very rapid compared to other
technologies. Photonic crystal (PC)-based combinational and sequential circuits are most …

Photonic crystals are one of the most important structures used in the creation of optical
devices. Photonic crystals are capable of being used to make optical diodes. The quantity of …

Multiplexers are widely used logic circuits that connect a number of inputs to an output.
These circuits are used to create logic functions. This article designs and simulates a 2× 1 …