Design and simulation of all optical logic gates based on 2D photonic crystal fiber

Naznin, Shakila; Karim, Sk. Toufaenoor; Tisa, Rasna Tamanna; Farhad, Md. Abul

doi:10.1109/iceeict.2015.7307499

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…Moreover, photonic integrated circuits (PICs) assure low crosstalk, high bandwidth and less delay as demanded by all the applications. For PIC applications, various gates were designed [6][7][8][9][10][11][12][13][14][15][16][17][18] using different techniques, since no optimized design is made to operate at a high contrast ratio with ultra-compact structure. The exponentially growing demand is fulfilled by optical components realized using PhCs [19].…”

Section: Introductionmentioning

confidence: 99%

Ultra-compact all-optical logical circuits for photonic integrated circuits

Sridarshini¹,

Geerthana²,

Balaji³

et al. 2023

Laser Phys.

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In this paper, a photonic crystal based ultra-compact Optical XOR gate followed by an optical half-subtractor is proposed. Plane wave expansion is used to evaluate the photonic bandgap of the devised structure. The output and efficiency of logical circuits can be improved by maintaining distinct thresholds for the output logic states, thereby enabling the design to operate even in low power inputs. Reliability of the structure is enhanced by retaining a threshold for the output value. The performance of the proposed circuit is examined using the Finite Difference Time Domain method. The output is considered as logic 1 when the power level exceeds 0.7 μW and logic ‘0’ if it is below 0.35 μW. The proposed logical circuit has high contrast ratio. The XOR gate has a contrast ratio of about 12.55 dB, and the half subtractor has 7.78 dB and 11.76 dB for Difference and Borrow respectively. These devices work at 1550 nm wavelength and are ultra-compact in size. The proposed structure of logic gates will be suitable for photonic integrated circuits due to its ultra-small and simple design.

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Section: Introductionmentioning

confidence: 99%

Ultra-compact all-optical logical circuits for photonic integrated circuits

Sridarshini¹,

Geerthana²,

Balaji³

et al. 2023

Laser Phys.

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show abstract

“…A Mach-Zehnder interferometer made of PhC waveguides is reported in which the counter-propagating beams are allowed to pass through the nonlinear waveguide in order to design all-optical NOT and AND gates [15]. The AND gate is designed using a Y-shaped PhC waveguide [16] and also gates with a T-Shaped waveguide [17] were simulated and reported [18]. The low power logic NOT gate is also reported without any optical amplifiers and any nonlinear materials [19].…”

Section: Introductionmentioning

confidence: 99%

Photonic crystal based all-optical half adder: a brief analysis

et al. 2020

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A photonic crystal (PhC) based optical component paves a path to the upcoming all-optical computer processors. All the components can be realized with the help of PhCs. In particular, optical gates have played a major part in the development of all-optical half adders which has lead to the bloom of optical computing technology. In this paper, a PhC based optical half adder is proposed and a brief analysis is carried out for the different crystal structures and lattice patterns. The efficiency of the device is analyzed by providing proper distinct space in output power between logical ‘0’ and ‘1’ states and it operates well even in the reduced input power level. The error can be minimized while identifying the logical states (logic ‘0’ and logic ‘1’), by setting a threshold limit for output power. The threshold level is fixed such that if it is greater than 0.7 µW, it is considered as logic ‘1’, and if it is less than 0.35 µW, then it will be taken as logic ‘0’. The device with circular crystals in a hexagonal lattice provides a better contrast ratio of 12.55 dB and 9.29 dB for ‘sum’ and ‘carry’ respectively. The miniature size of the proposed device depicts that this device is compatible with photonic integrated circuit (PIC) applications.

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Comprehensive Study of all-in-one Simultaneous Multiple Optical Logic Gate Devices Using Mach–Zehnder Interferometer based on the Electro-optic Effect

Kumar

Jindal

et al. 2021

IETE Technical Review

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Design and simulation of all optical logic gates based on 2D photonic crystal fiber

Cited by 7 publications

References 6 publications

Ultra-compact all-optical logical circuits for photonic integrated circuits

Ultra-compact all-optical logical circuits for photonic integrated circuits

Photonic crystal based all-optical half adder: a brief analysis

Comprehensive Study of all-in-one Simultaneous Multiple Optical Logic Gate Devices Using Mach–Zehnder Interferometer based on the Electro-optic Effect

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