Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Subwavelength resolution of the annular photonic crystal with negative refraction
oleh: Xia F., Yun M., Liu M., Liang J., Kong W., Wan Y.
| Format: | Article |
|---|---|
| Diterbitkan: | EDP Sciences 2012-01-01 |
Deskripsi
In this paper, negative refraction in the two-dimensional (2D) hexagonal lattices annular photonic crystal (APC) was theoretically studied. The annular photonic crystal was obtained by introduced circular-air-hole in the core of the Si-rod. The properties of the designed APC, such as photonic band structure, equal-frequency contours (EFCs) and the electric field distribution are analyzed by using Plane Wave Expansion (PWE) method and Finite-Difference Time-Domain (FDTD) method. Numerical simulations show that negative refraction and super-lens imaging can be realized in the designed annular photonic crystal for the normalized frequency from 0.2983(2πc/a) to 0.347(2πc/a). And it was also found that the resolution decreases linearly with the increasing of the inner radius.