%0 Journal Article
%T Optically Tunable Narrowband Filter Using Liquid Crystal Defect in 1-D Photonic Crystal<br>基于液晶缺陷层的一维可调谐光子晶体滤波器研究
%A LI Xin-huo
%A YANG De-xing
%A ZHAO Jian-lin
%A <br>李新火
%A 杨德兴
%A 赵建林
%J 光子学报
%D 2007
%I 
%X Based on the theory of liquid crystal continuum,the tuning principle of one dimensional Si/SiO2 photonic crystal embedded in a nematic liquid crystal as a defect layer is analyzed and the relationship between applied voltage and tuning range is studied numerically by using transmission matrix method.The structure parameters of a tunable filter with narrow bandwidth and broad tuning range are determined through simulation computation.The computation results show that the tuning range achieve 100.8 nm between 1 600.6 nm and 1 499.8 nm when the applied voltage varies from 0.955 V threshold to 5 V saturation.The obtained tuning range covers telecommunication C band and almost S and L band.FWHMs(full width at half maximum) of the transmission peaks are between 0.074 nm and 0.090 nm,and the differences of bandwidths less than 17.8 percent.
%K Photonic crystal
%K Tunable filter
%K Nematic liquid crystal<br>光子晶体
%K 可调谐滤波器
%K 向列相液晶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=6962F2FAF8C0A91A159418C257B03226&yid=A732AF04DDA03BB3&vid=933658645952ED9F&iid=59906B3B2830C2C5&sid=E5322D16BA846136&eid=D4A949C86EFF77E3&journal_id=1004-4213&journal_name=光子学报&referenced_num=1&reference_num=20