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 …

The rapid development of photonic integrated circuits demands the design of efficient and
compact waveguide devices such as waveguide tapers and crossings. Some components in …

In this paper, a half adder was designed based on two-dimensional photonic crystals with
small dimensions and a simple structure. Half adders are an important component of logic …

An optical comparator is an important logic circuit used in digital designs. Photonic crystals
are among the platforms for implementing different kinds of gates and logic circuits, and they …

Abstract Silicon-on-insulator (SOI) waveguides with different geometries have been
employed to design various integrated optical components. Reducing the bending radius of …

Various photonic integrated components have been implemented by ultra-thin silicon-on-
insulator (SOI) waveguides; therefore, it is desirable to couple ultra-thin SOI waveguides to …

In integrated photonic circuits, silicon-on-insulator waveguides with different geometries
have been employed to realize a variety of components. Therefore, efficient coupling of two …

Abstract Silicon nitride (Si 3 N 4) planar waveguide platform combined with silicon-on-
insulator (SOI) devices offer a whole new generation of system-on-chip applications …

A transformation-optical method is presented to enhance the directivity of a cylindrical wire
antenna by using an all-dielectric graded index medium. The strictly conformal mapping …

Different material platforms, each offering a set of unique advantages, have been introduced
for photonic integrated circuits. These platforms may be used in the same photonic chip to …