Localized modes in defect-free dodecagonal quasiperiodic photonic crystals

被引：81
作者：
Wang, YQ
Hu, XY
Xu, XS
Cheng, BY
Zhang, DZ
机构：
[1] Chinese Acad Sci, Inst Phys, Opt Phys Lab, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China
来源：
PHYSICAL REVIEW B | 2003年 / 68卷 / 16期
关键词：
D O I：
10.1103/PhysRevB.68.165106
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The transmission property and localization of electromagnetic waves in defect free dodecagonal quasiperiodic photonic crystals (QPCs) are studied. The simulation of total energy flow and the density of states show that the dodecagonal QPC has a photonic gap for TM polarized electromagnetic waves. However, different from the periodic photonic crystals, electromagnetic waves with certain frequencies are localized at some special regions inside a perfect dodecagonal QPC. A corresponding experiment in the microwave region confirms the phenomenon. It is believed that the occurrence of localized modes in QPCs can be attributed to the competition between two spatial structural properties: self-similarity and nonperiodicity.
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页数：4
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