All-optical simultaneous AND &amp; XOR logic gates based on nonlinear micro-ring resonator

Mohebbi, Zahra; Nozhat, Najmeh; Khodadadi, Maryam

doi:10.1080/09500340.2018.1508771

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…The rapid increase in communication tra c has created the demand for wide bandwidth and fast computing speed. Optical signal processing using all optical devices will overcome the speed limitations imposed by electronic devices [1][2][3], increases data-rate capacity and deceases the power consumption as it eliminates optical-to-electrical conversion [4][5][6]. These properties of the optical devices make them as outstanding for data processing and high-speed computing in optical communication.…”

Section: Introductionmentioning

confidence: 99%

Design and simulation of reconfigurable optical logic gates for integrated optical circuits

Soma

Gowre²,

Sonth³

et al. 2023

Opt Quant Electron

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The proposed work presents a new structure that can be used as recon gurable optical logic gates. This structure is constructed in a two dimensional (2D) photonic crystals (PhCs). Logic gates like AND, NOT and NOR are realized by using the proposed structure. These optical logic gates are constructed in 6 µm * 6 µm in 2D PhCs square lattice with a lattice constant a=0.648 µm. All the gates are realized by creating structural disorders in the cross-waveguide geometries of 2D PhCs. The several performance parameters are examined using this structure and observed that proposed structure has reduced size, fast response time of 0.46ps, high bit rates of 2.14Tbits/sec and better contrast ratio of 8.6dB against the existing designs. The signal amplitude larger than 0.5 arbitrary units (a.u.) and less than 0.1 (a.u.) at output are considered as logic '1' and '0' respectively. The plane wave expansion (PWE) is utilised to get the band gap for this logic gate 2D PhC structure and the nite difference time domain (FDTD) technique is utilised to investigate their performance in terms of light travelling in the crystal lattice structure. The gates are implemented in third optical window at the wavelength of 1.55 µm and can be used in photonic integrated circuits for signal processing in optical communication.

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Section: Introductionmentioning

confidence: 99%

Design and simulation of reconfigurable optical logic gates for integrated optical circuits

Soma

Gowre²,

Sonth³

et al. 2023

Opt Quant Electron

View full text Add to dashboard Cite

show abstract

“…One of the main advantages of photonic crystal ring resonators is their small size and high Q factor, making them suitable for integrated circuits and other compact devices. They also have low power consumption and are immune to electromagnetic interference, making them ideal for high-speed communication applications [18][19][20][21][22]. Additionally, chalcogenide glasses are well-suited for use in photonic crystal-based optical devices because they have a high refractive index and a large nonlinear optical coefficient and are likely to be used in a wide range of applications in the future [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

All-optical simultaneous OR and NAND gates using photonic crystal ring resonator and Kerr effect

Gupta,

Paltani,

Tripathi

2023

Phys. Scr.

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All-optical simultaneous OR and NAND gates design is proposed using a simple nonlinear photonic crystal ring resonator based on the chalcogenide glass (Ag20As32Se48) material which is one of the promising materials for all-optical devices. The structure consists of an octagonal ring resonator between two waveguides, which uses the switching threshold mechanism based on the Kerr effect to perform two simultaneous logic gates functions. The plane wave expansion (PWE) method is used to obtain the band diagram in the proposed structure, and the two-dimensional finite difference time domain (2D-FDTD) method is used in the simulation to evaluate the performance of the proposed design. The resonance wavelength is 1551.3 nm, with a high transmission and coupling efficiency of about 100%. The proposed optical OR and NAND logic gates have high contrast ratios of 21.15 dB and 28.19 dB, respectively, with a quality factor of 596.65. The operating power intensity of the proposed structure is 1 kW μm−2, and the threshold power intensity is obtained at 2.8 kW μm−2. The proposed gates provide transmitted power of not less than 0.5. The size of the structure is 20.5 μm × 18.17 μm. The proposed structure is compact, works on low operational power intensity, and has the ability for dense integration. The simplicity and small size of the structure make it easy to fabricate for future integration in all-optical circuits.

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An investigation on the cascaded operation of photonic crystal based all optical logic gates and verification of De Morgan’s law

Anagha

Jeyachitra

2020

Opt Quant Electron

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All-optical simultaneous AND & XOR logic gates based on nonlinear micro-ring resonator

Cited by 8 publications

References 26 publications

Design and simulation of reconfigurable optical logic gates for integrated optical circuits

Design and simulation of reconfigurable optical logic gates for integrated optical circuits

All-optical simultaneous OR and NAND gates using photonic crystal ring resonator and Kerr effect

An investigation on the cascaded operation of photonic crystal based all optical logic gates and verification of De Morgan’s law

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