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Hybrid integration of 300nm-thick LiNbO3 films on ion-exchanged glass waveguides for efficient nonlinear integrated devices

In this paper, the realization of hybrid Lithium Niobate-silicate glass waveguide is presented. A 300nm-thick ion-sliced lithium niobate thin film has been successfully reported on a glass substrate containing high refractive index strip created by a silver/sodium ion exchange. The obtained waveguides have been successfully characterized at a wavelength of 1.5 μm and showed a single mode behavior as well as a strong confinement. The use of such waveguides for electro-optic modulators or second harmonic generation is also discussed.