%0 Journal Article
%T Formation and propagation of dark solitons in metamaterials<br>超常介质中暗孤子的形成和传输特性研究
%A Liu Hai-Lan
%A Wen Shuang-Chun
%A Xiong Min
%A Dai Xiao-Yu
%A <br>刘海兰
%A 文双春
%A 熊敏
%A 戴小玉
%J 物理学报
%D 2007
%I 
%X We use an extended Tanh-function expansion method to solve the nonlinear equation for ultrashort pulse propagation in matamaterial,and obtain dark solitary solutions in various cases.Further,we study the influence of the controllable self-steepening effect and the second-order nonlinear dispersion on the formation and propagation of dark solitons in metamaterials.It is found that the negative self-steepening effect in metamaterial makes the soliton center move to the leading side,opposite to the moving direction of soliton in ordinary materials in which the self-steepening effect is always positive.Most importantly,due to the role of the second-order nonlinear dispersion,dark solitons can be formed in the medium without linear dispersion or with an anomalous linear dispersion.
%K solitons
%K metamaterial
%K self-steepening
%K second-order nonlinear dispersion<br>孤子
%K 超常介质
%K 自陡效应
%K 二阶非线性色散
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=1A7F80CA21754FB4E25F6C3E39EDAF1F&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=708DD6B15D2464E8&sid=0798C3000EBFB64E&eid=CBEC75530FFB3442&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=24