Abstract: In this work we present the results of a systematic study of H:LiNbO$-3$/, H:LiTaO$-3$/ and Cs:KTP waveguides obtained by combining measurements of propagation constants, optical profiles, and Raman scattering of the exchanged layers. Also, we present direct measurements of the r$-33$/ coefficients in proton exchanged and annealed proton exchanged waveguides in LiNbO$-3$/ and LiTaO$-3$/ obtained by means of phase modulation technique and quantitative relations between the waveguide characteristics and the doping level in the Cs:KTP layers.!17
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