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 Bragg Reflecting Gratings in Optical Fibers by Ultravoilet Light

用紫外光直接在光纤内写入布拉格反射光栅的实验研究杜卫冲谭华耀＊刘颂豪华南师范大学，激光生命科学研究所，广州５１０６３１＊香港理工大学，电机系自１９８９年Ｍｅｌｔａｚ［１］首次提出采用两束波长位于掺Ｇｅ－石英光纤吸收带内的相干紫外激光相干涉，从侧面照射...

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.