Single photonic crystal structure for realization of NAND and NOR logic functions by cascading basic gates

Shaik, Enaul Haq; Nakkeeran, R.

doi:10.1007/s10825-017-1081-9

Cited by 28 publications

(10 citation statements)

References 23 publications

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“…6, this value is obtained as cT = 66 µm, which equals 0.22 ps. The fall time is equal to the time when the output power has been reduced from mode one logical level to 10% of output power [26]. To display this value, a pulse is given to the logical gate input and the output diagram is plotted, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Ultra‐fast and compact all‐optical half adder using 2D photonic crystals

Seifouri

Olyaee

Sardari

et al. 2019

IET Optoelectronics

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Section: Resultsmentioning

confidence: 99%

Ultra‐fast and compact all‐optical half adder using 2D photonic crystals

Seifouri

Olyaee

Sardari

et al. 2019

IET Optoelectronics

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“…Depending on the type of resonance used for the design, the response time will be different. Shorter response time will result in very high data transmission speeds [28].…”

Section: Simulation Methodsmentioning

confidence: 99%

A novel proposal based on 2D linear resonant cavity photonic crystals for all-optical NOT, XOR and XNOR logic gates

Elhachemi

Naoum

2020

Journal of Optical Communications

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In this paper, we are going to propose a novel structure of all-optical NOT, XOR and XNOR logic gates are presented using a two-dimensional photonic crystal (2D-PhC). This structure is optimized by varying the radius of the cavity, to obtain a quality factor Q = 1192, and also has several ports of entry and one port of output. The size of each structure is equal to 85.8 μm2. The contrast ratios for the structures proposed all-optical NOT, XOR and XNOR logic gates between levels “0” and “1” are, respectively, 25.08, 25.03, and 14.47 dB. The response time for the three logical gates is 8.33 ps, and the bit rate is calculated at about 0.12 Tbit/s, all simulations are based on both numerical methods such as finite difference time domain (FDTD) and plane wave expansion (PWE). Designed logic gates are characterized by low power consumption, compactness and easy integration.

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“…It is better to have a high contrast ratio or ON to OFF ratio. Destructive and constructive interferences between the inputs signals provide low-and high-output power levels corresponding to the logic '0' and the logic '1' [4]. Therefore, reducing the output power level (P 0 ) further increases the CR.…”

Section: Design Of the All-optical Toffoli Gatementioning

confidence: 99%

“…Therefore, all-optical logic gates become one of the vital aspects of the implementation of signal processing and networks. Realisation of all-optical logic gates can be achieved via various techniques such as photonic crystals (PCs) [4][5][6][7], ring resonators [8][9][10], semiconductor optical amplifiers, and so on [11].…”

Section: Introductionmentioning

confidence: 99%

Implementation of all‐optical Toffoli gate by 2D Si–air photonic crystal

Ranwa

Mukhopadhyay

2021

IET Optoelectronics

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The quantum Toffoli gate is one of the essential reversible universal logic gates widely used for optical data processing. Herein, a new scheme of developing all-optical Toffoli gate using a two-dimensional silicon-air photonic crystal is proposed. For the realization of the Toffoli gate, the principles of constructive and destructive interference of light are used. The Toffoli gate comprises two-input-three-output-based optical AND gate, and a two-input-one-output optical XOR gate. Two Y junction power splitters have been used at the two inputs of the AND gate. The operating wavelength of the proposed Toffoli gate is 1550 nm along with the wafer size of 50 µm � 50 µm. The performance of the Toffoli gate has been analysed and simulated by the plane-wave expansion method and finite-difference time-domain method. The response time and contrast ratios are also obtained from the simulation. The proposed Toffoli gate is intensity encoded with no non-linear material within the crystal which shows significant improvement over other proposals.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Single photonic crystal structure for realization of NAND and NOR logic functions by cascading basic gates

Cited by 28 publications

References 23 publications

Ultra‐fast and compact all‐optical half adder using 2D photonic crystals

Ultra‐fast and compact all‐optical half adder using 2D photonic crystals

A novel proposal based on 2D linear resonant cavity photonic crystals for all-optical NOT, XOR and XNOR logic gates

Implementation of all‐optical Toffoli gate by 2D Si–air photonic crystal

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