矩形取样Bragg光纤光栅研究  

STUDY ON THE THEORY OF SAMPLED FIBER BRAGG GRATING

作　　者：贾宝华[1] 冯丹琴[1] 盛秋琴[1] 

机构地区：[1]南开大学物理科学学院光电信息科学系,天津300071

出　　处：《南开大学学报（自然科学版）》2003年第2期41-46,共6页Acta Scientiarum Naturalium Universitatis Nankaiensis

摘　　要：利用傅立叶变换的方法 ,对矩形取样 Bragg光纤光栅的谱特性进行了分析 ,将其结论与耦合模理论的结果进行了比较和研究 ,在反射率较低时两者的结论是一致的 .另外 ,经推导发现 ,取样光纤光栅的反射峰间隔 Δλ不只和光栅周期 p有关 ,而且与取样率 T关系密切 .The spectral property of sampled fiber gratingwas analyzed with Fourier transposition. It's conclusion was then compared with the result gotten form the deduction with coupled mode theory. The two outcomes were unified with each other when reflective ratio was low enough. Furthermore, we found that the interval Δλ between two reflective peaks of sample fiber grating was related not only to the period p of grating, but also closely to sampling rate T. The result has already been proved by experiment.

关 键 词：矩形取样Bragg光纤光栅 傅立叶变换 传输矩阵分析 取样率 

分 类 号：TN253[电子电信—物理电子学] TN713