  The propagation of electromagnetic waves through disordered layered system is
considered in the paradigm of Maxwell's equations homogenization. In spite of
the impossibility to describe the system in terms of effective dielectric
permittivity and/or magnetic permeability the unified way to describe the
propagation and Anderson localization of electromagnetic waves is proposed in
terms of the introduced effective wave vector (effective refractive index). It
is demonstrated that both real and imaginary parts of the effective wave vector
(contrary to effective dielectric permittivity and/or magnetic permeability)
are the self-averaging quantities at any frequency. The introduced effective
wave vector is analytical function of frequency; corresponding Kramers-Kronig
relation generalizes the Jones-Herbert-Thouless formula.
