%0 Journal Article
%T Analysis of Refractive-index Distribution of Square Gradient Lens<br>方形自聚焦透镜折射率分析
%A CHEN Kai
%A HAN Yan-ling
%A ZHOU Zi-gang
%A <br>陈凯
%A 韩艳玲 周自刚
%J 光子学报
%D 2008
%I 
%X MATLAB diffusion partial differential toolbox is used to solve ion diffusion equation with square boundary conditions, and the ion concentration dynamic process is simulated during the ion exchange. The Solution can be played and showed. The Tl+ concentration equation in square class fiber is calculated by variable separation method, the refractive-index distribution of Square GRIN lenses analytic solution is got based on the linear relation between refractive-index and ion concentration. The computation results are in good agreement with the measured ones. It can reflect the refractive-index of Square GRIN well.
%K Square GRIN Lenses
%K Ion exchange
%K MATLAB
%K Variable separation method<br>方形自聚焦透镜
%K 离子交换
%K MATLAB
%K 分离变量法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=57ED301598697D00012B78CEB2F8DBD0&yid=67289AFF6305E306&vid=42425781F0B1C26E&iid=E158A972A605785F&sid=421C41B8FD4D3EBA&eid=7004BE6E41AAF52C&journal_id=1004-4213&journal_name=光子学报&referenced_num=1&reference_num=11