کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1811653 | 1025599 | 2011 | 4 صفحه PDF | دانلود رایگان |

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.
Research highlights
► The EM wave propagation in a 2D circular photonic crystal is investigated.
► The negative refraction and imaging properties can appear in 2D CPCs.
► CPCs with negative refraction could provide potential applications in optical imaging systems.
Journal: Physica B: Condensed Matter - Volume 406, Issue 4, 15 February 2011, Pages 1044–1047