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Dresden 2006 – scientific programme

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DF: Dielektrische Festkörper

DF 1: Internal Symposium “Integrated Electroceramic Functional Structures”

DF 1.9: Talk

Monday, March 27, 2006, 12:30–12:50, M{\"U}L Elch

Optical waveguides in single-crystalline LiNbO3 films — •Carsten Dubs1,2, Andreas Lorenz1,2, Matthias Will2, Jens-Peter Ruske2,3, and Andreas Tünnermann21INNOVENT e.V., Prüssingstr. 27B, D-07745 Jena — 2Institut für Angewandte Physik, Friedrich-Schiller-Universität, Max-Wien Platz 1, D-07743 Jena — 3Guided Color Technologies GmbH, Göschwitzer Str. 25, D-07745 Jena

Lithium Niobate (LiNbO3) is one of the most extensively used dielectric material for optical waveguides at telecommunication wavelengths around 1.5 mm. Commonly LiNbO3 integrated optical devices for optical switches, modulators, second harmonic generation devices were fabricated by a combination of microfabrication techniques and metal diffusion (e.g. Ti) or ion-exchange (H+-ions) processes. Because of the considerably light-induced refractive index changes in the visible as well as at high power densities in the near-infrared spectral range only (damage-resistant) substituted LiNbO3 materials of reproducible high quality are usable for optical components exhibiting a well-defined performance. We prepared planar waveguides based on epitaxially grown zinc-substituted LiNbO3 by liquid phase epitaxy technology. We will report about film properties like surface morphology, crystalline perfection, homogeneity as well as about optical properties of the so obtained planar waveguides. Beside investigation of the film microstructure and waveguide properties results of ridge waveguide fabrication for the visible wavelength range and for application at high power densities will be reported. *

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