一种新颖的取样光纤光栅振幅版的研制

A novel method for fabricating sampled fiber grating amplitude mask

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 method for fabricating sampled amplitude mask is presented, the feature of which is the varying sampling period and fixed sampling duty ratio. By using such an amplitude mask, sampled fiber gratings with different wavelength spacings of reflectivity peaks can be easily fabricated. So the novel method has the advantages of reduced fabrication cost and improved versatility of sampled grating. The possible disadvantages of the method are also discussed. Wavelength selectable fiber laser with vernier wavelength tuning mechanism is also demonstrated by the sampled fiber grating.