Investigation and Modification of Coupling of Photonic Crystal Defects

作     者：林旭升 陈雄文 兰胜 

作者机构：DepartmentofPhysicsShantouUniversityShantou515063 Information&ElectronTechnologicalInstituteSouthChinaNormalUniversityGuangzhou510631 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2005年第22卷第7期

页      面：1698-1701页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：国家自然科学基金 广东省自然科学基金 国家教育部项目 广东省教育厅项目 

主　　题：PC EM CMT 

摘      要：We investigate the coupling of photonic crystal (PC) defects by using coupled-mode theory. The PC molecules formed by the coupling of two identical PC atoms are the focus of our study. It is revealed that the flatness of the transmission spectra of the PC molecules is determined uniquely by the phase shift of the travelling wave between the two coupled PC atoms. By properly adjusting the distance between the two constitutional PC atoms, we are able to modify the transmission spectrum of the resulting PC molecule. Theoretical analyses based on the coupled-mode theory are in good agreement with the simulation results obtained by the transfer matrix method and the finite-difference time-domain technique.