10.57647/j.spre.2025.0901.05

A Tunable Plasmonic Graphene-Based Optical Gate for Advanced Photonic Applications

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  • Mohammad Mohsen Khodayari1,
  • Siavash Es'haghi*2,
  1. Department of Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
  2. Department of Electrical and Computer Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

Received: 2024-11-09

Revised: 2024-12-11

Accepted: 2024-12-16

Published 2025-03-01

Copyright (c) 2025 Mohammad Mohsen Khodayari, Siavash Es'haghi (Author)

Creative Commons License

This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.

How to Cite

Khodayari, M. M., & Es'haghi, S. (2025). A Tunable Plasmonic Graphene-Based Optical Gate for Advanced Photonic Applications. Signal Processing and Renewable Energy (SPRE), 9(1 (March 2025), 1-9. https://doi.org/10.57647/j.spre.2025.0901.05
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Abstract

This paper presents the design and analysis of a plasmonic graphene-based optical gate with a tunable wavelength selection mechanism, targeting applications in advanced photonic integrated circuits. Graphene, known for its exceptional electrical, thermal, and optical properties, is utilized to develop a compact and efficient optical structure. The proposed mechanism employs thin-layer graphene, dielectric substrates, and an air cavity to achieve tunable resonance at specific wavelengths. Finite-difference time-domain (FDTD) simulations reveal two primary resonance wavelengths at 11000 nm and 7300 nm, demonstrating high transmission efficiency and quality factors of 365 and 400, respectively. The tunability of the mechanism is explored by varying the chemical potential of graphene and the refractive index of the dielectric medium, allowing precise control over the resonance wavelengths. Building on this mechanism, we design a plasmonic graphene-based AND logic gate, which is analyzed for different input states to validate its logical operation. This study underscores the potential of plasmonic graphene-based devices for high-performance, miniaturized photonic systems, with implications for next-generation optical computing and communication technologies.

Keywords

  • Optical gate,
  • AND,
  • Graphene,
  • Non-linear,
  • Cavity,
  • Quality factor
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