摘要
为了实现一维二元光子晶体的全方位禁带,利用传输矩阵法,对于不发生Brewester效应的一维光子晶体的禁带结构特点进行了研究,获得了TE波和TM波的反射率随频率和入射角的变化关系图,分析了TE波和TM波光子禁带特征.根据全方位禁带特性,提出了一种新的光子晶体的无源电磁屏蔽设计,并指出了在给定屏蔽频段范围内,两种介质光学厚度的选取范围.数值计算表明了只要TM波满足屏蔽条件就能实现电磁屏蔽.
To implement the omnidirectional forbidden band of 1-D binary photonic crystals, the transfer matrix method is used to study the structural features of the forbidden band of 1-D photonic crystals without Brewester effect. The relationships between the reflection index of TE and TM waves, frequency and incident angle are obtained to analyze the characteristics of photon forbidden band of TE and TM waves. According to the property of omnidirectional forbidden band, a new-type passive electromagnetic shielding is designed with photonic crystals. Furthermore, the selection scopes of two dielectric optical thicknesses are given within the specified frequency band limitation of shielding. Numerical calculations showed that in the design the electromagnetic shielding is available as long as the TM wave complies with the shielding conditions.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第7期1061-1064,共4页
Journal of Northeastern University(Natural Science)
基金
教育部春晖计划项目(Z2005-1-21005)
关键词
光子晶体
全方位禁带
无源电磁屏蔽
传输矩阵
光学厚度
photonic crystal
omnidirectional forbidden band
passive electromagnetic shielding
transfer matrix
optical thickness
