摘要
利用光子晶体的共振隧穿效应,并结合由负折射材料引起的零平均折射率带隙,设计出一种新型的角度滤波器,使得对于某一频率范围内的入射电磁波仅在特定入射角度的波能够全透,而其他角度的波不能透过.这将在微波器件乃至光学器件上有广泛应用.
A new kind of one-dimension photonic crystal （PC） which can be used as an angular filter was studied. With the knowledge of resonance tunneling mechanism in zero average index PC, we find such PC must contain negative refractive metamaterials and its structure parameters should satisfy some special conditions. When electromagnetic wave of a given frequency incident on such PC, only those portions with incident angles identical with the special angle （or angles） can pass through such PC, while the others can not. Such filter would have wids applications in microwave and optical communications.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第6期2765-2770,共6页
Acta Physica Sinica
基金
国家自然科学基金(批准号:90203007和10547138)
上海市启明星跟踪计划(批准号:04QMH1407)资助的课题~~
关键词
光子晶体
负折射率材料
共振隧穿
photonic crystal, negative refraction metamaterials, resonance tunneling
