%0 Journal Article
%T A new way of uniform splitting of the optical power by directional coupling between the photonic crystal waveguides<br>一种实现光子晶体波导定向耦合型多路光均分的新方法
%A Zhu Gui-Xin
%A Yu Tian-Bao
%A Chen Shu-Wen
%A Shi Zhe
%A Hu Shu-Juan
%A Lai Zhen-Quan
%A Liao Qing-Hua
%A Huang Yong-Zhen
%A <br>朱桂新
%A 于天宝
%A 陈淑文
%A 石哲
%A 胡淑娟
%A 赖珍荃
%A 廖清华
%A 黄永箴
%J 物理学报
%D 2009
%I 
%X Directional coupler can be constructed by putting multiple photonic crystal waveguides together. The propagation of the optical field entering this system symmetrically was analysed numerically according to self-imaging principle. On the basis of this structure, ultracompact multiway beam splitter was designed and the ones with three and four output channels were discussed in details as examples. By simply tuning the effective refractive index of two dielectric rods in the coupler symmetrically to induce the redistribution of the power of the optical field, uniform or free splitting can be achieved. Compared with the reported results, this way is simpler, more feasible and more efficient and has extensive practical value in future photonic integrated circuits.
%K photonic crystal waveguide
%K directional coupler
%K beam-splitter
%K uniform energy distribution<br>光子晶体波导，
%K 定向耦合器，
%K 分束器，
%K 能量均分
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=D494D1371F23F5B9359B43E7EC2DBB9A&yid=DE12191FBD62783C&vid=9FFCC7AF50CAEBF7&iid=0B39A22176CE99FB&sid=512771C17A2FFC1B&eid=CBC69BEA05C12902&journal_id=1000-3290&journal_name=物理学报&referenced_num=2&reference_num=19