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Designing low power and high contrast ratio all-optical NOT logic gate for using in optical integrated circuits

  • Ahmad Mohebzadeh-Bahabady
  • Saeed OlyaeeEmail author
Article
  • 42 Downloads

Abstract

In this paper, a new design of all-optical NOT logic gate is proposed. In this structure, a photonic crystal nano-resonator and three waveguides are used. The nano-resonator is formed by removing two dielectric rods. The contrast ratio for the proposed NOT logic gate is 20.75 dB. The maximum response time and the rate of sending information equal to 0.466 ps and 2.145 Tbit/s, respectively. In addition, very low power consumption, small size, and simple design are the main features of this logic gate. These features allow the designed structure to be used in all-optical switches. To accomplish this, two types of logic gates placement alongside each other in the optical integrated circuits are proposed and investigated. In both types, the logic gates are tested for single use and simultaneous use, and the accuracy of the performance and effect of each on the other is measured. The results clearly show that the two logic gates, along with each other, have acceptable performance and can easily be used in the optical integrated circuit.

Keywords

All-optical NOT logic gate Optical integrated circuit Photonic crystal Response time Nano-resonator 

Abbreviations

OIC

Optical integrated circuits

LG

Logic gate

PC

Photonic crystal

RT

Response time

‘One’

Logical level one

‘Zero’

Logical level zero

RR

Ring resonator

NR

Nano-resonator

CR

Contrast ratio

Notes

Authors’ contributions

AM-B designed and performed simulations, analyzed data and finally drafted the manuscript. SO edited and prepared the finally drafted the manuscript. All authors read and approved the final manuscript.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Nano-Photonics and Optoelectronics Research Laboratory (NORLab), Faculty of Electrical EngineeringShahid Rajaee Teacher Training University (SRTTU)Lavizan, TehranIran

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