用紫外光直接在光纤内写入布拉格反射光栅的实验研究

Direct writing of fiber Bragg gratings (FBG) by an excimer laser using phase mask copy method is reported. FBGs written in B Ge co doped single mode silica fibers with Bragg wavelength of 1541.80 nm, bandpass of 0.2 nm and central reflectivity of 95% have been observed.