长周期光纤光栅组合透射谱的仿真研究  

Simulation study on combination of long period fiber grating's transmitted spectrum

作　　者：李雅珍[1] 蒋学英[1] 李志全[2] 

机构地区：[1]东北大学秦皇岛分校计算机工程系,河北秦皇岛066004 [2]燕山大学电气工程学院仪器科学系,河北秦皇岛066004

出　　处：《传感器技术》2004年第9期24-25,28,共3页Journal of Transducer Technology

摘　　要：根据耦合模理论及模耦合方程推导了长周期光纤光栅的透射系数、反射比和级联长周期光纤光栅的透射系数表达式,用Matlab对其进行仿真研究,并总结了长周期光纤光栅透射谱特性随光栅长度、周期及耦合系数的变化规律,通过仿真实验验证了系统特性。Transmission coefficient and reflection ratio of long period grating and expression of transmission coefficient of cascaded long period grating are derived by using the coupled mode theory and coupled mode equation.Then Matlab is used to simulate the result and law of change of long period fiber grating's transmitted spectrum along with length,period and coupling coefficient is generalized.Through simulating experiment,the characteristics of the system are verified.

关 键 词：长周期光纤光栅 透射谱 级联 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]