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，在多波长光纤激光器等方面有重要应用 The reflection spectra of the sinusoidal Tapered fiber grating are calculated and analyzed by the coupled-mode equation and verified experimentally. Tapered fiber grating with three reflection peaks and central wavelength interval of 0.8nm was obtained by using the template with periodic fiber grating superimposed on the grating and the periodic amplitude grating. The grating has the similar structure to the comb filter Function, in the multi-wavelength fiber laser and other important applications