基于保偏光纤取样光栅的宽频带滤波方法  

A Novel Method to Realize Wider Passband Filter Based on Sampled FBGs Inscribed in PMF

作　　者：雷永庆[1,2] 李亚娟[1,2] 徐晓峰[1,2] 韦珏[1,2] 康智慧[1,2] 

机构地区：[1]吉林大学物理学院,长春130023 [2]相干光与原子分子光谱教育部重点实验室(筹),长春130023

出　　处：《光子学报》2008年第12期2434-2438,共5页Acta Photonica Sinica

摘　　要：提出一种新型刻录在保偏光纤上的取样布喇格光纤光栅.利用耦合模方程分析了此种光纤光栅的光谱特性,并利用切趾函数对光栅的输出谱进行了优化处理,最终可以实现高品质的宽频带多波长滤波.频带宽度为普通取样布喇格光纤光栅的2倍,经过切趾处理后,此种光纤光栅的边模抑制比也有显著提高.A novel method to realize wider passband filter with the sampled fiber Bragg gratings （FBGs） inscribed in polarization-maintaining fiber （PMF） is proposed The characteristic of this new type of gratings is analyzed by coupled mode equations, and the reflection spectrum of the new type of gratings is dealt with by optimal apodization function The excellent wider passband filter is realized, meanwhile, passband of the filter is twice wider than sampled fiber Bragg gratings （FBGs） on standard single mode fiber （SMF） ,and the higher Side Mode Suppression Ratio （SMSR） is obtained.

关 键 词：取样光纤布喇格光栅 保偏光纤 密集波分复用系统 多波长滤波器 

分 类 号：TN253[电子电信—物理电子学]