长周期光纤光栅光谱响应与结构参数关系的研究

A Study on the Relation between the Spectral Characteristics and the Structural Parameters for a Long-period Fiber Grating

本文应用耦合模理论分析了长周期光栅的光谱特性。运用传输矩阵法模拟计算并分析了光栅结构 ,如折射率分布包络、平均折射率变化和啁啾系数的改变对长周期光栅光谱特性的影响 ,得到光谱响应规律 。

The spectral characteristics of a long period fiber grating is analyzed by using the coupled mode theory.The influences of various structural features such as the apodize,chirp and average refractive index to the spectral characteristics are studied numerically with a transfer matrix method.The results and conclusions are useful for optimal design of long period fiber gratings.