Determination of nonlinear refractive index in a Ta2O5 rib waveguide using self-phase modulation Tai, Chao-Yi ; Wilkinson, James S. ; Perney, Nicolas M. B. ; Netti, M. Caterina ; Cattaneo, F. ; Finlayson, Chris E. ; Baumberg, Jeremy J. Abstract Publication: Optics Express Pub Date: October 2004 DOI: 10.1364/OPEX.12.005110 Bibcode: 2004OExpr..12.5110T