P04–Titanium Dioxide Waveguide Based Inverse Adiabatic Taper Coupler for Fiber-to-Chip Coupling

We present an efficient fiber-to-chip coupling method for polarization independent single mode titanium dioxide-TiO2 waveguide. The proposed inverse adiabatic taper coupler between a lensed fiber and waveguide consists of a spot size converter and allows coupling efficiency of around 85%.