%0 Journal Article
%T Band gap characteristics of two-dimensional photonic crystals made of a triangular lattice of dielectric rods<br>介质柱型二维Triangular格子光子晶体的禁带特性
%A Yang Yi-Biao
%A Wang Shuan-Feng
%A Li Xiu-Jie
%A Wang Yun-Cai
%A Liang Wei
%A <br>杨毅彪
%A 王拴锋
%A 李秀杰
%A 王云才
%A 梁伟
%J 物理学报
%D 2010
%I 
%X Plane wave expansion method is applied to simulate the bandgap of two-dimensional photonic crystals made of a triangular lattice of dielectric rods(circular,hexagon,square cross sections) in air. Moreover, the effect on band gap of a triangular lattice of square dielectric rods in air is discussed as a function of the rotation angle, the refractive index and the filling fraction, respectively. In the low frequency region, the maximum complete photonic band gap appears when the rotation angle equals 17 degrees. the maximum complete photonic band gap can be attained steadily as the refractive index changes continuously. In the high frequency region, the maximum complete photonic band gap appears when the rotation angle equals 30 degrees. The complete photonic band gap is observed when the refractive index is greater than 2.2. The width of complete photonic band gap reaches the maximum when the dielectric refractive index is equal to 2.6.
%K photonic crystals
%K photonic bandgap
%K plane wave expansion method
%K triangular lattice<br>光子晶体
%K 光子禁带
%K 平面波展开法
%K 三角格子
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=F854C41D0FA17E65072B861EDAF1EFB6&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=DF92D298D3FF1E6E&sid=8D9C370E73AE5891&eid=5BDEDC6559A6E852&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=20