中国光学（中英文）2024，Vol.17Issue(2)：456-467,12.DOI:10.37188/CO.EN-2023-0021
基于二维光子晶体非线性效应的全光逻辑门
All-optical logic gate based on nonlinear effects of two-dimensional photonic crystals
摘要
Abstract
All-optical XOR,NOT and two-input AND logic gates are designed based on the nonlinear effect and linear interference effect of photonic crystals.The complex logic expressions are divided by inversion theorem,and all-optical NOR gate and four-input AND gate logic devices are designed by cascade combina-tion.In this paper,the Finite-Difference Time-Domain(FDTD)method is used for simulation,and the coup-ling characteristics of nonlinear annular cavities are analyzed.Then,the above logic devices are designed un-der the condition that the signal wavelength is 1.47 μm,and more input devices can be designed by expand-ing the input.The influence of signal power on the logic function of the four-input AND logic devices is ana-lyzed.The results show that when the power of the signal light source is between 1.1 W/μm2 and 3.4 W/μm2,the logical contrast ratio of the output is greater than 10 dB.The response time of the designed device is only 1.6 ps,the occupied area is small,and the device is easy to expand and integrate.It has great application pro-spect in optical processing systems and integrated optical paths.关键词
环形谐振腔/微腔/光逻辑/非线性效应Key words
ring resonator/microcavity/optical logics/nonlinear effect分类
信息技术与安全科学引用本文复制引用
吴蓉,杨建业,张皓辰..基于二维光子晶体非线性效应的全光逻辑门[J].中国光学（中英文）,2024,17(2):456-467,12.基金项目
甘肃省自然科学基金(No.21JR7RA289)Supported by Natural Science Foundation of Gansu Province(No.21JR7RA289) （No.21JR7RA289）
