A novel design of fast and compact all-optical full-adder using nonlinear resonant cavities

Mapping Intimacies ◽

10.21203/rs.3.rs-200775/v1 ◽

2021 ◽

Author(s):

Saleh Naghizade ◽

Hamed Saghaei

Keyword(s):

Time Delay ◽

Light Propagation ◽

Resonant Cavity ◽

Full Adder ◽

Resonant Cavities ◽

Expansion Technique ◽

All Optical ◽

Small Footprint ◽

Silicon Rods ◽

Doped Glass

Abstract In this paper, we report a new design of all-optical full-adder using two nonlinear resonators. The PhC-based full-adder consists of three input ports (A, B, and C for input bits), two nonlinear resonant cavities, several waveguides, and two output ports (for the Sum and Carry). Eight silicon rods and a nonlinear rod composed of doped glass form each resonant cavity. The well-known plane wave expansion technique is used to calculate the photonic band structure. It shows a wide photonic bandgap in the wavelength range of 1365 nm to 2074 nm covering the C and L optical transmission bands. The finite-difference time-domain method is applied to study the light propagation inside the full-adder. Our numerical results demonstrate when the incoming light intensity increases, the nonlinear optical Kerr effect appears and controls the direction of light emitted inside the structure as desired. The maximum time delay and footprint of the proposed full-adder are about 3ps and 758.5 µm2, respectively. Therefore, due to the low time delay and small footprint, the presented design can be used as a basic mathematical operator in the all-optical arithmetic logic unit.

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A Novel Design of All-optical Full-adder Using Nonlinear X-shaped Photonic Crystal Resonators

10.21203/rs.3.rs-215501/v1 ◽

2021 ◽

Author(s):

Saleh Naghizade ◽

Hamed Saghaei

Keyword(s):

Photonic Crystal ◽

High Speed ◽

Light Propagation ◽

Full Adder ◽

All Optical ◽

High Speed Data ◽

Doped Glass ◽

Photonic Band ◽

Novel Design ◽

Incoming Light

Abstract This paper proposes a new all-optical full-adder design based on nonlinear X-shaped photonic crystal (PhC) resonators. The PhC-based full-adder consists of three input ports, two X-shaped PhC resonators (X-PCRs), and two output ports. The dielectric rods made of silicon and nonlinear rods composed of doped glass are used to design the X-PCRs. Two well-known plane wave expansion and finite difference time domain methods are applied to study and analyze the photonic band structure and light propagation inside the PhC, respectively. Our numerical results demonstrate when the incoming light intensity increases, the nonlinear Kerr effect appears and manages the direction of light propagation inside the structure. The maximum time delay and footprint of the proposed full-adder are about 2.5ps and 663 μm2, making it an appropriate adder for high-speed data processing systems.

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A Four-Channel Optical Demultiplexer Using Photonic Crystal-Based Resonant Cavities

Journal of Optical Communications ◽

10.1515/joc-2016-0156 ◽

2018 ◽

Vol 39 (4) ◽

pp. 369-373 ◽

Cited By ~ 1

Author(s):

Hassan Absalan

Keyword(s):

Photonic Crystal ◽

Photonic Crystals ◽

Resonant Cavity ◽

Resonant Mode ◽

Two Dimensional ◽

Resonant Cavities ◽

Optical Channels ◽

All Optical ◽

Do So

Abstract The aim of this paper was to propose and design an all optical four-channel demultiplexer using two-dimensional photonic crystals. To do so a resonant cavity was created by reducing the radius of the two adjacent rods. The radius of these defect rods was about 85 nm. The resonant cavity has a resonant mode at 1,557 nm. Then by using four resonant cavities with different radius values a four-channel optical demultiplexer was designed. The demultiplexer has four optical channels at λ1=1,537 nm, λ2=1,546 nm, λ3=1,553 nm and λ4=1,560 nm.

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Ultra-fast all-optical full-adder based on nonlinear photonic crystal resonant cavities

Photonic Network Communications ◽

10.1007/s11107-020-00917-5 ◽

2020 ◽

Author(s):

M. J. Maleki ◽

A. Mir ◽

M. Soroosh

Keyword(s):

Photonic Crystal ◽

Full Adder ◽

Resonant Cavities ◽

Nonlinear Photonic Crystal ◽

All Optical

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A novel design of fast and compact all-optical full-adder using nonlinear resonant cavities

Optical and Quantum Electronics ◽

10.1007/s11082-021-02929-5 ◽

2021 ◽

Vol 53 (5) ◽

Author(s):

Saleh Naghizade ◽

Hamed Saghaei

Keyword(s):

Full Adder ◽

Resonant Cavities ◽

All Optical ◽

Novel Design

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A Proposal for All Optical XNOR Gate Using Photonic Crystal Based Nonlinear Cavities

Journal of Optical Communications ◽

10.1515/joc-2018-0089 ◽

2018 ◽

Vol 0 (0) ◽

Cited By ~ 1

Author(s):

Mahsa Karimzadeh ◽

Alireza Andalib

Keyword(s):

Logic Gates ◽

Digital Systems ◽

Plane Wave Expansion ◽

Optical Logic ◽

Resonant Cavities ◽

Optical Logic Gates ◽

Xnor Gate ◽

All Optical ◽

Doped Glass ◽

Difference Time

AbstractAll optical logic gates can play very important roles in all optical digital systems. In this paper we designed an all optical XNOR gate. The switching part of the designed XNOR consists of two nonlinear resonant cavities. The nonlinear cavities were created by adding two nonlinear defects made of doped glass. Plane wave expansion and finite difference time domain methods were used for simulating the designed structure. The final structure has two input and one output ports. The output port is ON when the input ports have similar states. For the designed structure the delay time is about 2.5 ps.

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Design and Simulation of a Very Fast and Compact All-Optical Full-Subtractor Based an Nonlinear Effect in 2D Photonic Crystals

10.21203/rs.3.rs-320958/v1 ◽

2021 ◽

Author(s):

Reza Beiranvand ◽

Ali Mir ◽

Reza Talebzadeh

Keyword(s):

Refractive Index ◽

Photonic Crystals ◽

Integrated Circuits ◽

Square Lattice ◽

Optical Integrated Circuits ◽

All Optical ◽

Non Linear ◽

Linear Material ◽

Silicon Rods ◽

Doped Glass

Abstract In this paper, by using the non-linear effects and also destructive and constructive interferences between waveguides, we have designed and simulated an all-optical full-Subtractor based on two-dimensional photonic crystals. The proposed Subtractor has a very simple structure which is composed of 33×31 silicon rods immersed in air in a square lattice and involves three input ports (bits) and an additional waveguide to exhaust the unwanted light. We imposed some defect rods to control the behavior of the light. The used non-linear material, is a doped glass with 1.4×10− 14 m2/w non-linear refractive index which is very greater than the non-linearity refractive index of silicon, 3.46×10− 20 m2/w. Since the proposed structure is very simple and compact, it can be applicable in optical integrated circuits and optical calculations.

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TIME DELAY AND FREQUENCY RESPONSE OF RESONANT CAVITIES

Canadian Journal of Physics ◽

10.1139/p60-152 ◽

1960 ◽

Vol 38 (11) ◽

pp. 1510-1515

Author(s):

A. G. Mungall ◽

D. Morris

Keyword(s):

Time Delay ◽

Frequency Response ◽

Resonant Cavity ◽

Resonant Cavities ◽

Resonant Frequencies ◽

The Difference ◽

Delay Dependent

The frequency response and time delay characteristics of resonant cavities are discussed. It is found that a signal travelling through a resonant cavity undergoes a time delay dependent on both the cavity Q and also the difference between the signal and resonant frequencies. The time delay for a frequency-modulated wave is calculated and checked experimentally.

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