%0 Journal Article
%T A new beam propagation method based on least-squares expansion approximating<br>一种新的基于最小平方逼近的广角光束传播方法
%A Xia Jin-Song
%A Yu Jin-Zhong
%A <br>夏金松
%A 余金中
%J 物理学报
%D 2003
%I 
%X A new finite difference wide-angle beam propagation method is developed by introducing the least-squares expansion approximant in the propagator expansion- In this new method it is not necessary to select the reference index point because of the whole region approaching the lease-square expansion- This method avoids the problems induced by error selection of the reference index in the old methods based on Taylor or Padè expansion- Several typical structures are simulated by the new method and the results prove the validity of it-
%K beam propagation method
%K finite difference
%K integrated optics
%K numeric method<br>光束传播方法，
%K 有限差分，
%K 集成光学，
%K 数值方法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=06DB564B53392048&yid=D43C4A19B2EE3C0A&vid=286FB2D22CF8D013&iid=38B194292C032A66&sid=F204392B3B11C3BD&eid=68FF5306A8F9C315&journal_id=1000-3290&journal_name=物理学报&referenced_num=3&reference_num=11