The designs of XOR logic gates based on photonic crystals

Lee, Kun‐Yi; Lin, Jhe-Min; Yang, Yicheng; Yang, Yibin; Wu, Jia-Sing; Lin, Yuechuan; Lee, Wei-Yu

doi:10.1117/12.803465

Cited by 29 publications

(5 citation statements)

References 18 publications

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“…As introduced in Sec. It is obvious that the contrast ratio reaches a maximum value of 33 dB, which is much better than the previously reported value 5,13,18,24 when the radius of the scattering rods is 0.23a. By investigating the transmission ratio at output port C which corresponds to the cases of inputs (1, 0), (0, 1), and (1, 1), we plot the transmission ratio versus various sizes of the two scattering rods, as shown in Fig.…”

Section: Resultscontrasting

confidence: 70%

All-optical AND, XOR, and NOT logic gates based on Y -branch photonic crystal waveguide

2015

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This paper presents all-optical AND, XOR, and NOT logic gates based on the light beam interference effect. Each logic gate is simply composed of a Y -branch waveguide with two input ports and one output port in the two-dimensional triangular-lattice photonic crystals. The designed logic gates are analyzed and simulated by the plane wave expansion and finite difference time-domain method. Simulation results show that the proposed all-optical structures really function as AND, XOR, and NOT logic gates, possess a small size of less than 11.6 μm × 13.8 μm and low power consumption. The contrast ratio of the proposed devices reaches 5.4 dB for the AND gate, 33 dB for the XOR and NOT gates, respectively, by precisely controlling the phase differences and properly choosing the size of the scattering rods.

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Section: Resultscontrasting

confidence: 70%

All-optical AND, XOR, and NOT logic gates based on Y -branch photonic crystal waveguide

2015

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“…Photonic crystals offer a wide range of applications in ultra-compact all-optical integrated circuits with a high reduction in energy consumption. Currently, several logic gates based on photonic crystal platforms have been demonstrated (Lee et al 2008).…”

Section: Introductionmentioning

confidence: 99%

2D-FDTD Electromagnetic Simulation of an Ultracompact All-Optical Logic Gate Based on 2D Photonic Crystal for Ultrafast Applications

Sousa

Almeida

Sousa

et al. 2022

Preprint

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In this paper, the concept of photonic crystals (PhCs) is fundamental to the design and simulation of an all-optical device. The proposed logic device is composed of two-dimensional (2D) photonic crystal waveguides with a central photonic crystal ring resonator (PCRR). The new all-optical NAND logic gate is composed of two linear waveguides coupled to each other through a single compact PCRR. The plane wave expansion (PWE) and finite-difference time-domain (FDTD) methods are used to analyze the behavior of the structure that is implemented on the operational wavelength of 1700 nm on an air wafer of only 12 µm × 12 µm. The simulation results show that the proposed all-optical NAND gate is a strong candidate to be used for ultrafast photonic integrated circuits (PICs) being highly advantageous with high transmitting power, simple design and without use of the optical amplifiers and nonlinear materials.

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“…Further there are very few references available, where optical logic gates are based on photonic crystal structure. For example in reference [7], OR and XOR logic gates are realized by introducing a line defect along TX-direction, while in reference [8], XOR gate is realized by a line defect asymmetric Y branch waveguide [9]. The different PCS, reported in the literature have mainly two disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Novel All Optic Logic Gates using 2D Photonic Crystal Structure

2015

J Material Sci Eng

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The designs of XOR logic gates based on photonic crystals

Cited by 29 publications

References 18 publications

All-optical AND, XOR, and NOT logic gates based on Y -branch photonic crystal waveguide

All-optical AND, XOR, and NOT logic gates based on Y -branch photonic crystal waveguide

2D-FDTD Electromagnetic Simulation of an Ultracompact All-Optical Logic Gate Based on 2D Photonic Crystal for Ultrafast Applications

Novel All Optic Logic Gates using 2D Photonic Crystal Structure

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