Abdulwahid, S., Wadday, A., Abdul Sattar, S. (2024). Realization of an all-optical d and t flip flops with nano-structure using hybrid plasmonic waveguides. , 42(8), 1068-1079. doi: 10.30684/etj.2023.142434.1532
Saif H. Abdulwahid; Ahmed G. Wadday; Sinan M. Abdul Sattar. "Realization of an all-optical d and t flip flops with nano-structure using hybrid plasmonic waveguides". , 42, 8, 2024, 1068-1079. doi: 10.30684/etj.2023.142434.1532
Abdulwahid, S., Wadday, A., Abdul Sattar, S. (2024). 'Realization of an all-optical d and t flip flops with nano-structure using hybrid plasmonic waveguides', , 42(8), pp. 1068-1079. doi: 10.30684/etj.2023.142434.1532
Abdulwahid, S., Wadday, A., Abdul Sattar, S. Realization of an all-optical d and t flip flops with nano-structure using hybrid plasmonic waveguides. , 2024; 42(8): 1068-1079. doi: 10.30684/etj.2023.142434.1532

Realization of an all-optical d and t flip flops with nano-structure using hybrid plasmonic waveguides

Engineering and Technology Journal
Volume 42, Issue 8, August 2024, Pages 1068-1079    PDF (2.33 M)
Document Type: Research Paper
DOI: 10.30684/etj.2023.142434.1532
Authors
Saif H. Abdulwahid* 1; Ahmed G. Wadday2; Sinan M. Abdul Sattar1
1Electrical Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.
2Al-Furat Al-Awsat Technical University ATU, Kufa, Iraq.
Abstract
Surface waves are electromagnetic waves propagating along the interface between a metal and an insulator. Surface waves break the diffraction limits and enable light to propagate in sub-wavelength structures. That opens the field of electro-opto devices. The main drawbacks of surface waves that move in the Plasmonic Waveguides (PWs) are propagation loss and low light confinement. Using a combination of the plasmonic waveguide and a Dielectric Waveguide (DW), the defect of the surface waves can be enhanced, and the Hybrid Plasmonic waveguide (HPW) is introduced. In this research, the design of an all-optical flip flop with 400 nm × 400 nm nano-scale dimensions, 1310 nm operating wavelength, and a transmission threshold (Tthreshold) of 30% is shown using hybrid plasmonic waveguides (HPWGs) for Electro-Opto applications. It offers the basic structure for creating optical computers. The results of this structure are evaluated in a term of Contrast Ratio (CR), Modulation Depth (MD), and Insertion Losses (IL). The D-flip flop had an Insertion Loss of -1.4 dB, a CR of 7.45 dB, and a MD of  97.67%. The T-flip flop had an IL of -2.07 dB, a CR of 11.2 dB, and a MD of 95.29%. The mechanism that governs the operation of the suggested circuits depends on the constructive and destructive interferences between input ports and control ports. The simulation is based on the finite element method utilizing COMSOL software package version 5.5.

Highlights
  • Optical D and T flip flops are designed using hybrid plasmonic waveguides
  • The suggested design has nano dimensions of 400 nm2
  • There is an amplification effect in the Transmission values
Keywords
Hybrid plasmonic waveguides T and D flip flops Square; shaped nano; ring resonators Modulation depth Contrast ratio
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