%0 Journal Article %J Opt. Lett. %D 2012 %T Integrated TiO2 resonators for visible photonics %A J. Choy %A J. D.B. Bradley %A P. Deotare %A I. B. Burgess %A C. C. Evans %A Mazur, E. %A Loncar, M. %X We demonstrate waveguide-coupled titanium dioxide (TiO2) racetrack resonators with loaded quality factors of 2.2 × 104 for the visible wavelengths. The structures were fabricated in sputtered TiO2 thin films on oxidized silicon substrates using standard top-down nanofabrication techniques, and passively probed in transmission measure- ments using a tunable red laser. %B Opt. Lett. %V 37 %P 539–541 %G eng %U /files/mazur/files/rep_680.pdf %R 10.1364/OL.37.000539