研究目的
Design and analysis of optical logic gates using two-dimensional photonic crystals to realize AND logic gate functions in a hexagonal lattice.
研究成果
The two-dimensional photonic crystal-based AND logic gates, both two-input and three-input configurations, were successfully designed and analyzed. The structures demonstrated high contrast ratios of 6.64 dB and 10.96 dB, respectively, indicating their potential for high-speed optical communication systems. The proposed designs offer advantages such as compactness, high speed, and low power consumption, making them suitable for future optical networks and photonic integrated circuits.
研究不足
The study focuses on the design and simulation of AND logic gates using photonic crystals, with potential limitations in practical implementation such as sensitivity to fabrication tolerances and the need for precise control over photonic crystal properties.
1：Experimental Design and Method Selection:
The AND logic gate is designed using a hexagonal lattice of 21x21 Si rods, with the performance simulated using the FDTD method. The design incorporates resonator and line defects to direct signal propagation.
2：Sample Selection and Data Sources:
The structure uses Si rods arranged in a hexagonal lattice with specific dimensions and refractive index.
3：List of Experimental Equipment and Materials:
Si rods with a radius of 120nm and refractive index of 3.46, arranged with a lattice constant of 600nm.
4：46, arranged with a lattice constant of 600nm.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The design involves creating line defects and a ring resonator within the photonic crystal structure. Input signals at 1550nm wavelength are applied to input ports, and output is monitored for transmission power.
5：Data Analysis Methods:
The contrast ratio is calculated to evaluate the performance of the logic gates, with results analyzed using the FDTD method.
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