Waveguide Studies for Fiber Optics and Optical Signal Processing Applications

摘要

This report describes investigations of waveguide components for use in multimode fiber optics and in optical signal processing. Measurements of beam expansion and polarization properties of distributed Bragg deflectors are described. Measurements of the characteristics of DBR lasers are detailed, with emphasis on those properties which are relevant to their use as sources to couple to the waveguide beam expander. Studies of the mechanisms for loss in LiNbO3 waveguides are described and techniques to reduce the waveguide loss in LiNbO3 modulators are outlined. Finally, preliminary experiments on electro-thermal diffusion in LiNbO3 are described. (Author)