摘要
为了得到光子晶体太赫兹波段的传输特性,研究了晶体材料和晶体类型两个主要因素对传输特性的影响。利用MATLAB程序分别优化计算得到宽禁带和窄禁带光子晶体材料的最大完全带隙以及不同晶格结构和最大完全带隙之间的关系。对于相同晶格结构,带隙随介电常数比增大,对于不同晶格结构,三角晶格形成的最大带隙最大,最后根据太赫兹波的性质设计了太赫兹传输器件。研究结果为太赫兹波器件的开发提供了理论依据。
In order to gain the transmission characteristics of photonic crystals in the THz range, the influence of two main factors of crystal materials and different lattice structures on the propagation characteristics is studied. Both the maximum full band gaps of the crystal materials with wide or narrow forbidden band gap and the relation between the maximum full band gap and different lattice structures are obtained by computational optimization with MATLAB software. For the same lattice structure, the larger the dielectric constant ratio is, the larger the complete forbidden band gaps will be. For different lattice structures, the maximum full band gap of the triangle crystal lattice is the biggest. Finally, THz transmission components are designed according to the characteristics of THz wave.
出处
《半导体光电》
CAS
CSCD
北大核心
2010年第2期270-272,共3页
Semiconductor Optoelectronics
基金
山东省教育厅2008年度科研发展项目(J08LI67)
山东省科技厅2007年科技攻关项目(2007GG30004005)
关键词
太赫兹波
光子晶体
平面波展开法
完全带隙
THz wave
photonic crystals
plan wave expansion method
full band gap
