Spectral broadening of femtosecond pulses in polycrystalline anatase titanium dioxide waveguides

We observe the first nonlinear spectral broadening of femtosecond pulses in singlemode anatase TiO2 waveguides at 793 and 1565 nm. The broad applicability and low two-photon absorption of TiO2 makes it a promising material for integrated photonics. © OSA 2012.