%0 Journal Article
%T Study on characteristics of a CO2-laser-induced ultra-long-period fiber grating<br>高频CO2激光脉冲写入超长周期光纤光栅特性研究
%A Zhu Tao
%A Rao Yun-Jiang
%A Mo Qiu-Ju
%A Wang Jiu-Ling
%A <br>朱 涛
%A 饶云江
%A 莫秋菊
%A 王久玲
%J 物理学报
%D 2007
%I 
%X A novel ultra-long-period fiber grating with periods up to several millimeters induced by using CO2 laser pulses is reported and discussed based on the mode coupling theory. The refractive index change occurs mainly within the cladding area of the fiber and has an unsymmetrical distribution on the cross-section of the ULPFG. The characteristics of temperature, strain, torsion and the effect of the refractive index of environment were investigated in theory and by experiment. The experimental results showed that different resonant peaks of the ULPFG have different sensitivities in the characteristics above mentioned, which offers possible applications in optical communications and sensing.
%K optical fiber sensing
%K fiber gratings
%K CO2 laser pulses
%K ultra long period fiber grating<br>光纤传感，
%K 光纤光栅，
%K CO2激光，
%K 超长周期光纤光栅
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=368AC40B396F249B&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=9CF7A0430CBB2DFD&sid=051328AF7C349D67&eid=59DEEB69E8747EA4&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=14