Negative refraction and imaging properties of circular photonic crystals

作者：Tseng Meng Chu; Wang Hung Wen; Chen Lien Wen^*

来源：Physica B: Condensed Matter , 2011, 406(4): 1044-1047.

DOI：10.1016/j.physb.2010.12.061

• Circular photonic crystals
• Negative refraction
• Near-field imaging

The electromagnetic wave propagation in a two-dimensional (2D) circular photonic crystal (CPC) is investigated. The CPC structure is composed of air holes in the dielectric background material. The finite element method is used to study the optical and propagating properties of the CPC slab. Numerical simulations show that negative refraction and near-field imaging can appear in a 2D CPC slab. We also find that the high-symmetry CPC slab possesses an optics axis along the vertical direction intersecting the symmetric center. As a result, the CPC slab can exhibit an excellent imaging performance when a source is placed on the optical axis.

• 出版日期2011-2-15