  We study the Anderson localization in nonlinear systems by taking a nonlinear
transmission line realizing the Toda lattice. It is found that the randomness
in inductance induces the Anderson localization in the voltage propagation.
Furthermore, the nonlinearity enhances the Anderson localization. They are
understood in terms of attractive interactions to form a soliton in a nonlinear
system. Our results will be applicable in general to the Anderson localization
in nonlinear systems that have solitons.
