Band gap effects in asymmetric photonic crystal slabs

被引:40
作者
Qiu, M [1 ]
机构
[1] Royal Inst Technol KTH, Dept Microelect & Informat Technol, S-16440 Kista, Sweden
关键词
D O I
10.1103/PhysRevB.66.033103
中图分类号
T [工业技术];
学科分类号
08 [工学];
摘要
It is found that the band gap effect does exist in asymmetric photonic crystal slabs, although there are no separable noninteracting subsets of the modes. This is obtained through band structures analysis, rather than the structures are approximated as symmetric if the modes are sufficiently localized. The band edge of the gap is decided by the fundamental TE0-like and TM0-like modes. It is also shown that waveguides (line defects) in asymmetric photonic crystal slabs could support lossless guided modes inside the band gap region.
引用
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页码:1 / 4
页数:4
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