Method for the fabrication of LiNbO3 single mode planar optical guide lenses

摘要

The invention takes regard for an innovative fabrication method of planar optical guide lenses, obtained by proton exchange in various cuts of LiNbO₃.;It pertains to the integrated optics technological field for the manufacturing of devices for real time processing of wide band RF signals. The process consists of thermal treatment followed by exchange of protons, in a diluted solution which serves to alter the refraction index of the guided mode in a controlled manner.;Such alteration, which is obtained through thin film masking, provides geometries and reticulations for the manufacturing of lenses and of other planar integrated optical components.