Coupling of cavity modes and guiding modes in two-dimensional phononic crystals

被引：57

作者：

Li, XC

Liu, ZY ^{[1
]}

机构：

[1] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China

[2] Ctr S Univ, Dept Phys, Changsha 410073, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2005年 / 133卷 / 06期

基金：

中国国家自然科学基金;

关键词：

cavity molecule; phononic crystal; waveguide; cavity defect;

D O I：

10.1016/j.ssc.2004.11.024

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Cavity modes for the single-cavity and the double-cavities in two-dimensional phononic crystal are studied by using a plane waves expansion supercell method. We show that the single-cavity behaves like an atom while the double-cavities behave like a molecule. Couplings of cavity modes with the waveguide modes are investigated for typical configurations. Suitably designed waveguides with introduced cavities might be used as acoustic filter in waveguide applications. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：397 / 402

页数：6

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