光通信技术2025，Vol.49Issue(1)：113-118,6.DOI:10.13921/j.cnki.issn1002-5561.2025.01.019
基于模式干涉的高对比度太赫兹波半加器
High contrast Terahertz wave half adder based on mode interference
孟旭 1李培丽1
作者信息
- 1. 南京邮电大学电子与光学工程学院、柔性电子(未来技术)学院,南京 210023
- 折叠
摘要
Abstract
In order to improve the contrast of the half adder,a high contrast Terahertz wave half adder design scheme based on mode interference is proposed.In this scheme,a linear waveguide is introduced into the complete two-dimensional square lattice tellurium dielectric pillar photonic crystal,and the logic operation function is realized.A comprehensive performance analysis of the half adder is conducted by combining the plane wave expansion method(PWM)and the finite difference time-domain method(FDTD)in Rsoft software,and optimization is carried out for the position of the incident waveguide and the offset of the dielectric column.The simulation results show that the designed half adder can perform two input half adder logic operations in the 2.85 THz band.The contrast between the sum end and carry end of the half adder can reach 21.37 dB and 5.96 dB,respec-tively,with an overall response time of 25.2 ps.Theoretically,it can achieve a data transmission rate of 39.68 Gb/s.The structure of the half adder is simple and compact,with a size of only 0.84 mm×0.72 mm.关键词
太赫兹技术/半加器/光子晶体/逻辑门Key words
Terahertz technology/half adder/photonic crystal/logical gate分类
信息技术与安全科学引用本文复制引用
孟旭,李培丽..基于模式干涉的高对比度太赫兹波半加器[J].光通信技术,2025,49(1):113-118,6.
