  We consider the Riemann problem of evolution of initial discontinuities for
the photon fluid propagating in a normal dispersion fiber with account of
self-steepening effects. The dynamics of light field is described by the
nonlinear Schroedinger (NLS) equation with self-steepening term appearing due
to retardation of the fiber material response to variations of the
electromagnetic signal. It is shown that evolution dynamics in this case is
much richer than that for the NLS equation. Complete classification of possible
wave structures is given for all possible jump conditions at the discontinuity.
