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利用相位掩膜技术，用ＫｒＦ准分子紫外激光束（波长为２４８ｎｍ），在锗掺杂溶胶－凝胶玻璃平面波导中直接写入了Ｂｒａｇｇ光栅并对光栅的特性进行了测试与表征．
Using the phase mask technique, a KrF excimer laser beam (wavelength of 248 nm) was used to directly write the Bragg grating in the Ge-doped sol-gel glass planar waveguide. The grating properties were tested and characterized.