摘要
本文采用时域伪谱 (PSTD)法分析复杂媒质中的光子带隙 (PBG)结构 ,建立了电磁波色散特性的统一数学模型 ,经数值计算绘出色散曲线 .在各向同性媒质情况下所得的曲线 ,与时域有限差分法及平面波展开法的结果相一致 .在各向异性媒质情况下 ,能展宽原各向同性媒质PBG结构的第一阻带。
The formulation of PBG structure consisting of complex (including anisotropic, biisotropic and bianisotropic) medium is modeled by using pseudo-spectral time-domain method, and then employed for calculating the dispersion curves. The numerical results show that in the case of isotropic medium, the dispersion curves are in good agreement with that from FDTD method and also plane wave expansion method; in the case of anisotropic medium, the dispersion curves form a wider first stop-band and more stop-bands of higher order.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2003年第12期1761-1764,共4页
Acta Electronica Sinica
基金
国家自然科学基金项目 (No.60 0 71 0 0 7)
中国-新加坡合作研究项目 (No .2 0 0 1 .62 )