Absolute photonic band gap in 2D honeycomb annular photonic crystals

作者：Liu, Dan^*; Gao, Yihua; Tong, Aihong; Hu, Sen

来源：Physics Letters, Section A: General, Atomic and Solid State Physics , 2015, 379(3): 214-217.

DOI：10.1016/j.physleta.2014.11.030

• Annular photonic crystal
• Absolute photonic band gap
• Anisotropic tellurium

Using the plane wave expansion method, we investigate the effects of structural parameters on absolute photonic band gap (PBG) in two-dimensional honeycomb annular photonic crystals (PCs). The results reveal that the annular PCs possess absolute PBGs that are larger than those of the conventional air-hole PCs only when the refractive index of the material from which the PC is made is equal to 4.5 or larger. If the refractive index is smaller than 4.5, utilization of anisotropic inner rods in honeycomb annular PCs can lead to the formation of larger PBGs. The optimal structural parameters that yield the largest absolute PBGs are obtained.

• 出版日期2015-1-23
• 单位湖北第二师范学院; 华中科技大学