Localized modes in defect-free two-dimensional circular photonic crystals

作     者：Wei Zhong Xiangdong Zhang 

作者机构：[]Department of Physics Beijing Normal University Beijing 100875 People’s Republic of China 

出 版 物：《Physical Review A》 (物理学评论A辑：原子、分子和光学物理学)

年 卷 期：2010年第81卷第1期

页      面：013805-013805页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China National Key Basic Research Special Foundation of China [2007CB613205] 

主　　题：QUASI-CRYSTALS WAVE-GUIDES TRANSMISSION PROPERTIES BAND-STRUCTURES GAP MICROCAVITIES BENDS FIBER Fiber Band structure Quality factor Transmission Characteristics microcavities electromagnetic waves Waveguide Device Component circular localised modes Photonic crystals 

摘      要：The localization of electromagnetic waves in defect-free circular photonic crystals (CPCs) is investigated using a multiple-scattering method. It is shown that electromagnetic waves of certain freqencies are localized in some special regions inside a perfect CPC with a high order of rotational symmetry. Localized modes with a high Q factor, greater than 106, are obtained. In particular, some unique localized modes such as circular modes and localized modes for both polarized waves are found in the present system, which are completely different from those in defect-free photonic quasicrystals and periodic structures. Their physical properties are also analyzed.