取样布拉格光纤光栅的谐振方程  

Resonance Equation of Sampled Fiber Bragg Gratings

作　　者：张自嘉[1] 王昌明[1] 

机构地区：[1]南京理工大学机械学院仪器系,江苏南京210049

出　　处：《激光与红外》2007年第6期552-554,557,共4页Laser & Infrared

基　　金：江苏省博士后科研基金资助

摘　　要：利用傅里叶变换和耦合模理论得到了取样布拉格光纤光栅的谐振方程,确定了其多谐振峰的位置。这一方程与光栅的周期和取样周期有关,它们共同确定了各反射峰的中心波长,与取样时的占空比、光栅长度和耦合系数没有关系。将谐振方程确定的谐振峰位置和传输矩阵得到的结果进行了比较,二者是一致的。利用谐振方程可以方便地得到取样布拉格光纤光栅的反射峰间隔。本文的结论对研究、设计和制作取样布拉格光纤光栅具有参考意义。The resonance equation of the sampled fiber Bragg gratings is derived through the Fourier＇s transform and the coupled-mode theory, which determine the wavelengths of the resonance peaks. The equation is related to both of the grating period and the sampled period, which have no relation to the duty ratio, the length of the gratings and the coupling coefficient. Both of the result calculated from the resonance equation and the transmission matrix are compared and they are approximately equal. The interval of the neighboring peaks can be derived conveniently by the resonance equation. The result is useful to the investigation and design and the fabrication of the sampled fiber Bragg gratings.

关 键 词：纤维光学 取样布拉格光纤光栅 谐振方程 梳状光谱 

分 类 号：TN929[电子电信—通信与信息系统] TN713[电子电信—信息与通信工程]