【摘要】 利用光振幅传输矩阵和耦合模理论 .对光纤方向耦合器各臂中都含有光纤光栅的模型特性进行了理论分析 ,导出了模型任意一个端口作为光输入口时 ,四端口的光场输出解析表达式 .在此基础上 ,提出了一种窄带高隔离度光纤光栅反射滤波器的理论模型 ,分析了该模型的特性与其结构参数之间的关系 ,并给出了模型结构的理论参数更多还原

【Abstract】 A general model for fiber directional coupler with fiber gratings in its arms is presented.The characteristics of the model have been analyzed with transfer matrix method and coupled mode theory.The output expression of any arm of the model is obtained when input is from an arm.Fiber grating filter with high isolation and narrow bandwidth using fiber directional coupler and fiber gratings is proposed.The influence of relative structure parameter on the model characterization is analyzed and the optimum structure parameter is obtained.更多还原