The IceCube Neutrino Observatory, approximately 1 km^3 in size, is now
complete with 86 strings deployed in the Antarctic ice. IceCube detects the
Cherenkov radiation emitted by charged particles passing through or created in
the ice. To realize the full potential of the detector, the properties of light
propagation in the ice in and around the detector must be well understood. This
report presents a new method of fitting the model of light propagation in the
ice to a data set of in-situ light source events collected with IceCube. The
resulting set of derived parameters, namely the measured values of scattering
and absorption coefficients vs. depth, is presented and a comparison of IceCube
data with simulations based on the new model is shown.