提出了一种新颖的用于制作取样光纤光栅的取样振幅版的设计方案,其特点是具有渐变的取样周期和不变的占空比,利用这种振幅版可以简单灵活地制作出反射峰波长间隔不同的取样光栅梳状滤波器,有利于提高取样光栅的制作灵活性并降低成本.对这种方法可能存在的不足也进行了分析.利用制作出的取样光栅,基于全光纤结构实现了具有游标尺式波长调谐机理的可选波长光纤激光器. A novel design of sampling amplitude version for sampling fiber Bragg grating (FBG) is proposed, which is characterized by a gradual sampling period and constant duty cycle. With this amplitude version, the reflection peak wavelength can be easily and flexibly fabricated The sampling raster comb filter with different intervals is helpful to improve the fabrication flexibility and cost of the sampling raster.Analyzing the possible shortcomings of this method.Using the fabricated sampling grating, Vernier scale wavelength tuning mechanism of optional wavelength fiber laser.