摘要
研究了左手材料作为衬底及覆盖层的对称三层平板空气波导的传输特性.快波和慢波都可以在这种波导中传播.快波不存在基模模式,只有0阶和1阶的TE或TM模才会出现慢波.当左手材料的相对介电常量和相对磁导率相等时,TE、TM模式完全简并,当其相异时简并消除.可以存在同阶模式的双传播模.
The propagation properties in a symmetrical three slabs air waveguide with left-handed materials as substrate and cover layers were studied. The fast and slow waves can both propagate in the waveguide system. There is no base mode for fast wave. The slow wave mode can exist in zero or one order TE or TM mode only. TE and TM mode were degenarated when the permittivity equal to permeability of the lefthanded material. And the degenarate was disappeared. Two propagation modes with the same mode number can coexiste in the waveguide.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2009年第4期832-836,共5页
Acta Photonica Sinica
基金
江苏省高校自然科学基础研究基金
江苏工业学院自然科学基金(07KJD140036)资助
关键词
导波光学
左手材料
平板波导
快波和慢波
简并
色散关系
Guided-wave optics
Left-handed material
Slab waveguide
Fast waves and slow waves
Degenaration
Dispersion relation
