Canalization for subwavelength focusing by a slab of dielectric photonic crystal

被引：12

作者：

Jin, Yi ^{[1
]}

He, Sailing

机构：

[1] Royal Inst Technol, Sch Elect Engn, Div Electromagnet Engn, S-10044 Stockholm, Sweden

[2] Zhejiang Univ, Ctr Opt & Electromagnet Res, Hangzhou 310027, Peoples R China

[3] Zhejiang Univ, Hangzhou 310027, Peoples R China

[4] Royal Inst Technol, Joint Res Ctr Photon, Stockholm, Sweden

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.75.195126

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A rectangular lattice of high dielectric rectangular rods in air is used to achieve canalization for subwavelength focusing. At the working frequency, the equifrequency curve of the dielectric photonic crystal is split into two very straight parallel lines in the entire first Brillouin zone. To increase greatly the transmission, the size of the rods on the interface layers is adjusted appropriately, while the thickness of the slab can be arbitrary. A slab of such a photonic crystal can transfer subwavelength focusing to a far distance even if moderate material loss exists.

引用

页数：5

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