Abstract:In this work, a modal analysis of reverse rib waveguide (RRW) structures based on a silica-titania platform is carried out. The silica-titania waveguide-films can be deposited via the sol-gel method and dip-coating technique. To combine this low-cost deposition technique with the economical fabrication method, we propose to structure the samples via wet-chemical etching. Due to the isotropic nature of wet etching, the waveguide architecture with rounded side walls is considered to model RRW. Additionally, the … Show more
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