报道了利用X射线双晶衍射法精确测定ZnO:LiNbO3质子交换光波导的晶格常数变化。结果表明，波导层内含有均匀分布的三维应变场，晶格常数的变化随着波导取向的不同而呈现各向异性特点。

Precise determination of strains in ZnO doped LiNbO3 proton exchanged optical waveguide using double crystal X-ray diffraction is reported in this paper. It is found that the waveguide layer contains uniformly distributed three dimensional strains and the variation of lattice constants in the waveguide depends closely on the waveguide orientation.