Observation of Raman scattering in glass integrated waveguides: a route towards supercontinuum generation

The development of pulsed lasers allows increasing the power density into integrated waveguides to a level compatible with the generation of nonlinear phenomena, opening the route to the realization of integrated supercontinuum sources. In this paper, we investigate the spectral broadening of a laser pulse through Raman scattering processes in normal dispersion regime with nanosecond pumping. The obtained experimental results are compared to an experimental model based on a single fiber with the same confinement and perspectives in terms of integrated broadband sources are presented.