Low group velocity in a photonic crystal coupled-cavity waveguide

作     者：张昌莘 许兴胜 

作者机构：State Key Laboratory of Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Beijing 100083China Department of Physics Guangdong University of Petrochemical Maoming 525000 China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2012年第21卷第4期

页      面：357-363页

核心收录：

学科分类：070207[理学-光学] 07[理学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 60877030) the National High Technology Research and Development Program of China (Grant No. 2009AA03Z406) the Program of Visiting Professor for Senior International Scientists of the Chinese Academy of Sciences (Grant No. 2009G2-17) the Science and Technology Program of Guangdong Province, China (Grant No. 2010B080701066) 

主　　题：photonic crystal wavguide coupled cavity slow light 

摘      要：A two-dimensional photonic crystal coupled-cavity waveguide is designed and optimized, the transmission spectrum is calculated by using the finite-difference time-domain method, and the group velocity of c/1856 is obtained. To our knowledge, this value of group velocity is the lowest group velocity in a photonic crystal waveguide calculated from its transmission spectrum so far. The result is confirmed by the photonic band structure calculated by using the plane wave expansion method, and it is found that the photonic crystal waveguide modes in a photonic band structure are in accordance with those in the transmission spectrum by using the finite-difference time-domain method. The mechanism of slow light in the coupled-cavity waveguide of photonic crystal is analysed.