Improved Plane-Wave Expansion Method for Band Structure Calculation of Metal Photonic Crystal  

作　　者：JIANG Bin ZHOU Wen-Jun CHEN Wei LIU An-Jin ZHENG Wan-Hua 江斌;周文君;陈微;刘安金;郑婉华(Nano-optoelectronics Lab,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083;State Key Laboratory on Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083)

机构地区：[1]Nano-optoelectronics Lab,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083 [2]State Key Laboratory on Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083

出　　处：《Chinese Physics Letters》2011年第3期104-106,共3页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2006CB921705;the National Natural Science Foundation of China under Grant Nos 10634080,60677046 and 60838003;the National High Technology Research and Development Program of China under Grant Nos 2007AA03Z410 and 2007AA03Z408.

摘　　要：We combine Cartesian coordinates and polar coordinates wave number eigenvalue equations based on the planewave expansion(PWE)method to calculate and optimize the band structures of the two-dimensional(2D)metal photonic crystals(PhCs).Compared with the traditional PWE methods for metal PhCs,the band structures can be calculated directly in our method and no further procedures are needed to handle the folded band structures.With this method,we optimize the large gap-midgap ratio of the 2D square lattice of square metal rods and circular metal rods.The TM gap-midgap ratio of the 2D square lattice of square metal rods reaches 7.6246%with the side length L=0.71a with a being the lattice constant.The TM gap-midgap ratio of the 2D square lattice of circular metal rods reaches 16.3934%with radius R=0.45a.Our method can be easily used in both square lattice and triangular lattice directly.

关 键 词：LATTICE COORDINATES CIRCULAR 

分 类 号：O15[理学—数学]