Proton exchanged LiNbO_3 and LiTaO_3 optical waveguides and integrated optic devices

摘要

We show that proton exchanged LiNbO_3 waveguides exhibit very complex structural chemistry. Seven H_xLi_(1-x)NbO_3 and six H_xLi_(1-x)TaO_3 crystallographic phases have been identified in PE LiNbO_3 and LiTaO_3 waveguides, respectively. A correlation is done between the electrooptical, nonlinear and photorefractive properties, the processing conditions and the refractive index changes of the waveguides. Some integrated optical devices have been realized.