Tellurium Oxide Thin Film Waveguides For Integrated Photonics

This paper reports the fabrication of Tellurium oxide films with deposited propagation losses that are sufficiently low to allow the fabrication of high quality planar integrated optical devices. Stoichiometric low loss films were produced by reactive magnetron RF sputtering and the effect of a wide range of sputtering parameters on stoichiometry, refractive index, Raman spectra and optical loss of thin films were investigated.