DESIGN AND SIMULATION OF ALL-OPTICAL NOT GATES BASED ON NANO-RING INSULATOR-METAL –INSULATOR PLASMONIC WAVEGUIDES

2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Hassan Falah Fakhruldeen
Keyword(s):  
Plasmonic Waveguides ◽  
Metal Insulator ◽  
All Optical

scholarly journals Design of Plasmonic NOT Logic Gate Based on Insulator – Metal – Insulator (IMI) waveguides

2020 ◽  
Vol 9 (1) ◽  
pp. 91-94
Author(s):  
H. F. Fakhruldeen ◽  
T. S. Mansour
Keyword(s):  
Dielectric Material ◽  
Logic Gate ◽  
Incident Light ◽  
Contrast Ratio ◽  
Optical Signal ◽  
Limit Problem ◽  
Dielectric Waveguides ◽  
Plasmonic Waveguides ◽  
Metal Insulator ◽  
All Optical

   In this work, all-optical plasmonic NOT logic gate was proposed using Insulator-Metal-Insulator (IMI) plasmonic waveguides Technology. The proposed all-optical NOT gate is simulated and realized using COMSOL Multiphysics 5.3a software. Recently, plasmonic technology has attracted high attention due to its wide applications in all-optical signal processing. Due to its highly localization to metallic surfaces, surface plasmon (SP) may have huge applications in sub wavelength to guide the optical signal in the waveguides which results in overcoming the diffraction limit problem in conventional optics. The proposed IMI structure is consist of a dielectric waveguides plus metallic claddings, which guide the incident light strongly in the insulator region. Our design consists of symmetric nano-rings structures with two straight waveguides which based on IMI structure. The operation of all-optical NOT gate is realized by employing the constructive and destructive interface between the straight waveguides and the nano-rings structure waveguides. There are three ports in the proposed design, input, control and output ports. The activation of control port is always ON. By changing the structure dimensions, the materials, the phase of the applied optical signal to the input and control ports, the optical transmission at the output port is changed. In our proposed structure, the insulator dielectric material is glass and the metal material is silver. The calculated contrast ratio between (ON and OFF) output states is 3.16 (dB).

scholarly journals Design an All-Optical Combinational Logic Circuits Based on Nano-Ring Insulator-Metal-Insulator Plasmonic Waveguides

Photonics ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 30 ◽  
Author(s):  
Saif Abdulnabi ◽  
Mohammed Abbas
Keyword(s):  
Integrated Circuits ◽  
Threshold Value ◽  
Full Adder ◽  
Optical Signal ◽  
Combinational Logic ◽  
Plasmonic Waveguides ◽  
Metal Insulator ◽  
Half Adder ◽  
All Optical ◽  
Logic Functions

In this paper, we propose, analyze and simulate a new configuration to simulate all-optical combinational logic functions based on Nano-rings insulator-metal-insulator (IMI) plasmonic waveguides. We used Finite Element Method (FEM) to analyze the proposed plasmonic combinational logic functions. The analyzed combinational logic functions are Half-Adder, Full-Adder, Half-Subtractor, and Comparator One-Bit. The operation principle of these combinational logic functions is based on the constructive and destructive interferences between the input signal(s) and control signal. Numerical simulations show that a transmission threshold exists (0.25) which allows all proposed four plasmonic combinational logic functions to be achieved in one structure. As a result, the transmission threshold value measures the performance of the proposed plasmonic combinational logic functions. We use the same structure with the same dimensions at 1550 nm wavelength for all proposed plasmonic combinational logic functions. The proposed all-optical combinational logic functions structure contributes significantly to photonic integrated circuits construction and all-optical signal processing nano-circuits.

WAVELENGTH DEMULTIPLEXING IN METAL–INSULATOR–METAL PLASMONIC WAVEGUIDES

2014 ◽  
Vol 28 (04) ◽  
pp. 1450025 ◽  
Author(s):  
XIANKUN YAO
Keyword(s):  
Transmission Efficiency ◽  
Plasmonic Waveguides ◽  
Metal Insulator ◽  
Metal Insulator Metal ◽  
Integrated Optical ◽  
Potential Applications ◽  
Wavelength Demultiplexing ◽  
Optical Circuits ◽  
Difference Time ◽  
Mim Waveguide

In this paper, we have numerically investigated a novel kind of ultra-compact wavelength demultiplexing (WDM) in high-confined metal–insulator–metal (MIM) plasmonic waveguides. It is found that the drop transmission efficiency of the filtering cavity can be strongly enhanced by introducing a side-coupled cavity in the MIM waveguide. The theoretical analysis is verified by the finite-difference time-domain simulations. Through cascading the filtering units, a highly effective triple-wavelength demultiplexer is proposed by selecting the specific separation between the two coupled cavities of filtering units. Our results may find potential applications for the nanoscale WDM systems in highly integrated optical circuits and networks.

All-optical switching with graphene-loaded plasmonic waveguides in the femtojoule and femtosecond range

2021 ◽  
Author(s):  
Masaaki Ono ◽  
Masanori Hata ◽  
Masato Tsunekawa ◽  
Kengo Nozaki ◽  
Hisashi Sumikura ◽  
...  
Keyword(s):  
Optical Switching ◽  
Plasmonic Waveguides ◽  
All Optical ◽  
All Optical Switching

scholarly journals Ultrafast all-optical switching enabled by epsilon-near-zero-tailored absorption in metal-insulator nanocavities

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Joel Kuttruff ◽  
Denis Garoli ◽  
Jonas Allerbeck ◽  
Roman Krahne ◽  
Antonio De Luca ◽  
...  
Keyword(s):  
Optical Switching ◽  
Metal Insulator ◽  
All Optical ◽  
All Optical Switching ◽  
Epsilon Near Zero
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