Acoustic beam splitting in two-dimensional phononic crystals using self-collimation effect

被引：48

作者：

Li, Jing ^{[1
,2
]}

Wu, Fugen ^{[2
]}

Zhong, Huilin ^{[2
]}

Yao, Yuanwei ^{[1
]}

Zhang, Xin ^{[1
]}

机构：

[1] Guangdong Univ Technol, Dept Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China

[2] Guangdong Univ Technol, Dept Expt Educ, Guangzhou 510006, Guangdong, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 118卷 / 14期

基金：

中国国家自然科学基金;

关键词：

PHOTONIC CRYSTALS;

D O I：

10.1063/1.4932138

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose two models of self-collimation-based beam splitters in phononic crystals. The finite element method is used to investigate the propagation properties of acoustic waves in two-dimensional phononic crystals. The calculated results show that the efficiency of the beam splitter can be controlled systematically by varying the radius of the rods or by changing the orientation of the square rods in the line defect. The effect of changing the side length of the square rods on acoustic wave propagation is discussed. The results show that the total transmission/reflection range decreases/increases as the side length increases. We also find that the relationship between the orientation of the transflective point and the side length of the square rods is quasi-linear. (C) 2015 AIP Publishing LLC.

引用

页数：6

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