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26 July 1979 In-Plane Scattering In LiNbO3 Waveguides
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Proceedings Volume 0176, Guided Wave Optical Systems and Devices II; (1979) https://doi.org/10.1117/12.957220
Event: Technical Symposium East, 1979, Washington, D.C., United States
Abstract
Experimental observations of the in-plane scattered energy distribution in Ti-diffused LiNb03 waveguides have been performed with a view toward determining and subsequently eliminating sources of scattering in this material. Results suggest that scattering from refractive-index variations is more important than scattering from surface roughness in commercial samples. However, scattering from contaminants at or near the surface exists and can be reduced by using less Ti diffusant and/or by polishing the finished waveguide. Variations in scattering as a function of propagation direction and mode polarization suggest that the scattering centers are anisotropic with regard to either their refractive index, their shape or both. Diagnostic experiments to ascertain the nature of these scatterers, including electrooptic, photorefractive, and thermal studies, are described.
© (1979) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David W. Vahey "In-Plane Scattering In LiNbO3 Waveguides", Proc. SPIE 0176, Guided Wave Optical Systems and Devices II, (26 July 1979); https://doi.org/10.1117/12.957220
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