一种新型的Tapered光纤光栅

A New Kind of Tapered Fiber Grating

利用耦合模方程对正弦型Ｔａｐｅｒｅｄ光纤光栅的反射谱进行了较为详细的计算和分析，并从实验上进行了验证。利用叠加均匀周期光纤光栅的模板和周期性振幅光栏一次成栅的方法，获得了具有三个反射峰、中心波长间隔为０．８ｎｍ的Ｔａｐｅｒｅｄ光纤光栅，这种光栅具有类似于梳状滤波器的功能。

Based on couple modes equations, the reflection spectrum of sinusoidal Tapered fiber grating was calculated in detail. It has been found that, under different sinusoidal taper profile, the single peak of periodic grating splits into two or three peaks, This kind of grating is something like a comb filter, and has good usage in WDM optical fiber communication system, multi wavelength tunable optical fiber laser etc.