光通信技术2024，Vol.48Issue(4)：47-53,7.DOI:10.13921/j.cnki.issn1002-5561.2024.04.009
基于二维光子晶体的多波段太赫兹波4×2编码器
Multi-band Terahertz 4×2 encoder based on two-dimensional photonic crystal
摘要
Abstract
In order to expand the applicable band range of the encoder,a multi-band Terahertz wave 4 x2 encoder based on two-dimensional photonic crystals is designed.The performance of the encoder is thoroughly studied and analyzed using Rsoft software combined with the plane wave expansion(PWE)method and the finite-difference time-domain(FDTD)method.The re-search results indicate that the output transmittance of the encoder varies with the lateral offset of the dielectric pillars at the waveguide branch.After optimizing the design of the Terahertz wave 4×2 encoder,it can achieve high-contrast 4x2 encoding log-ic functions in the wavelength ranges of 103.80～108.57 μm,109.19～111.12 μm,and 111.94～114.08 μm,with a contrast ratio of no less than 9.30 dB and a maximum of 29.47 dB,and a response time is not more than 16.04 ps.关键词
太赫兹技术/编码器/光子晶体/逻辑门Key words
Terahertz technology/encoder/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..基于二维光子晶体的多波段太赫兹波4×2编码器[J].光通信技术,2024,48(4):47-53,7.基金项目
国家自然科学基金项目(62175116)资助. （62175116）
