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Published in: Photonic Network Communications 3/2022

11-03-2022 | Original Paper

High-speed all-optical 2-bit multiplier based on photonic crystal structure

Authors: M. Liaghati-Rad, M. Soroosh, A. Kosarian

Published in: Photonic Network Communications | Issue 3/2022

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Abstract

In this study, a novel two-dimensional photonic crystal-based structure, including 70 and 90 rods along the x and z directions, has been proposed for multiplying two-bit numbers. The fundamental rods are made of silicon, and the lattice constant is equal to 608 nm. The structure consists of six cross-connection waveguides, and the nonlinear rods have been placed inside them. Dependence of the refractive index to the applied optical intensity for nonlinear rods helps to have the desired interferences and activate the correct output ports. The finite difference time domain and the plane-wave expansion methods are used to simulate the optical wave propagation throughout the structure and calculation of the band diagram. Time analysis of the structure shows the delay time is just around 6.5 ps that is proper to optical processing. Also, the contrast ratio is equal to 2.72 dB. The obtained results demonstrate the capability of the presented structure to be using for optical applications.
Literature
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Metadata
Title
High-speed all-optical 2-bit multiplier based on photonic crystal structure
Authors
M. Liaghati-Rad
M. Soroosh
A. Kosarian
Publication date
11-03-2022
Publisher
Springer US
Published in
Photonic Network Communications / Issue 3/2022
Print ISSN: 1387-974X
Electronic ISSN: 1572-8188
DOI
https://doi.org/10.1007/s11107-022-00971-1