光纤布拉格光栅的分析及其剥层算法重构

摘要

基于光纤光栅重构研究的必要性和重要性，从光纤光栅折射率调制原理入手，介绍了光纤布拉格光栅，研究了光栅的基本结构因素；对均匀调制光栅的传输矩阵分析法进行推导和阐述，同时对剥层算法的原理、步骤做了详细分析。基于剥层算法进行仿真模拟，实现了光纤布拉格光栅的重构，并使重构光栅的群时延得到缩短。%Because of the necessity and importance of the study on optical fiber grating reconstruction, introduces the fiber Bragg grating（FBG） and studies the grating basic structure factors from the modulation principle about fiber Bragg grating＇s refractive index. Then deduces and expounds the transfer matrix method of FBG for uniformly modulated grating. Meanwhile, analyzes in detail the principle and the steps of layer peeling（LP） algorithm. Finally, based on LP algorithm, makes the related simulation and realizes the reconstructing of FBG, and shortens the group delay of the grating＇s reconstruction.