%0 Journal Article
%T Extracting the external-cavity key of a chaotic semiconductor laser with double optical feedback by spectrum analyzer<br>利用频谱仪提取双反馈混沌半导体激光器的外腔长度密钥
%A Liang Jun-Sheng
%A Wu Yuan
%A Wang An-Bang
%A Wang Yun-Cai
%A <br>梁君生
%A 武媛
%A 王安帮
%A 王云才
%J 物理学报
%D 2012
%I 
%X Optical-feedback laser diodes have been widely applied in chaotic optical communication, because it can simply generate wideband and high-dimension chaos and its external-cavity length is often regarded as an additional key. In this paper, it is experimentally demonstrated that the time delay signature of a chaotic laser diode with optical feedback can be identificated. Through locally enlarging the power spectral of chaotic light and observing its fine structure, the external-cavity key can be directly extracted by the spectrum analyzer, regardless of the laser diode with single or dual optical feedback of different external cavity length ratio.
%K chaos
%K double feedback
%K external-cavity length
%K semiconductor lasers<br>混沌
%K 双反馈
%K 外腔长度
%K 半导体激光器
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=EA4AE3EE8E5D685EF8C915862A8DECBE&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=38B194292C032A66&sid=A07C7EF6C4BF688E&eid=A07C7EF6C4BF688E&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=17