长周期光纤光栅的理论分析及实验验证  

Theoretical analysis and experimental validation of long period fiber gratings

作　　者：李彬[1] 裴丽[1] 

机构地区：[1]北京交通大学光波技术研究所,北京100044

出　　处：《光学技术》2004年第3期343-346,350,共5页Optical Technique

基　　金：国家自然科学基金资助项目(69907001)

摘　　要：采用简化的三层光纤模型,从模式理论和耦合模理论出发,分析了长周期光纤光栅的耦合特性及功率透射谱,给出了长周期光栅的主要特性参数。利用计算机建模,采用Matlab软件对实用的SMF 28单模光纤加以特定的光栅折射率调制参数进行数值计算,并采用振幅掩模法刻写长周期光纤光栅进行实验验证,计算结果与实验结果相吻合。Based on mode theory and coupled-mode theory, the mode-coupling characteristic and power transmission-spectra of the long period fiber grating and presented the central characteristic parameters of the long period fiber grating are analyzed by using the simplified three-layered fiber model. With the aid of the computer, Matlab was used to numerically calculate the commercial SMF-28 single-mode fiber with the given modulated refractive index parameter of the fiber grating. Experimental validation was made by writing long period fiber grating with amplitude mask method. The calculation results agree with the experiment results.

关 键 词：长周期光纤光栅 模式场 耦合系数 耦合模方程 

分 类 号：TN2531[电子电信—物理电子学]