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研制了一种光纤Ｂｒａｇｇ光栅滤波器。该滤波器采用紫外激光直写技术，可在掺锗单模光纤上获得高反射率（９９％）、窄带宽（０．６ｎｍ）和低插入损耗（１．４ｄＢ）。实验结果表明，有良好的重复性。
A fiber Bragg grating filter has been developed. The filter uses UV laser direct writing technology to achieve high reflectivity (99%), narrow bandwidth (0.6nm) and low insertion loss (1.4dB) over germanium-doped single mode fibers. The experimental results show that there is good repeatability.