Optical quantum Information Processing makes use of the quantum mechanical properties of single photons to achieve useful information processing functions. This talk will present work carried out at the University of Southampton on the fabrication of optical waveguide device to realize essential functions for all optical quantum information handling. Utilizing silica-on-silicon as a platform and direct UV writing of waveguides, the talk will present results on key elements including single photon sources, waveguide circuits and waveguide sensors.