线性啁啾变迹及均匀光纤光栅的反射谱分析  

The Spectrum of Linear Chirped and Apodized OFBG and of Uniform OFBG

作　　者：闾晓琴[1] 李振华[1] 王海林[1] 贺安之[1] 

机构地区：[1]南京理工大学理学院,南京210094

出　　处：《南京理工大学学报》2003年第1期77-80,共4页Journal of Nanjing University of Science and Technology

摘　　要：该文从理论上研究了线性啁啾变迹光纤光栅及均匀光纤光栅的反射谱。经分析发现 ,高斯分布的耦合系数具有平滑反射谱、消除旁瓣的作用 ,啁啾系数的增大使得光栅的反射谱明显变宽、最大反射率降低 ,利用这个规律 ,可选择恰当的参量 ,制作出符合工程要求的光纤光栅 ;同时也发现均匀“弱”光纤光栅的反射谱具有sa (x)函数的分布特性。在此基础上提出用“弱”This paper theoretically studied on the reflection spectrum of linear chirped Gauss apodized OFBG(optical fiber Bragg grating) and of uniform OFBG,found that the apodized function can smooth the reflection spectrum, increasing the chirp coefficient can broader the reflection bandwidth, but at the same time reduced the maximum reflectivity. Using this rule guide us to fabricate the suitable OFBG. In addition,under weak conditions(K 0<1), the amplitude reflection of a uniform OFBG is analyzed.The spectrum has a characteristic of sa(x) shape.Base on this,the paper proposed an assume to use weak OFBG as matched optical filter.

关 键 词：均匀光纤光栅 反射谱分析 耦合模 线性啁啾变迹光纤光栅 

分 类 号：TN253[电子电信—物理电子学]