  We provide the classification of possible wave structures evolving from
initially discontinuous profiles for the photon fluid propagating in a normal
dispersion fiber. The dynamics of light field is described by the generalized
Chen-Lee-Liu equation, which belongs to the family of the nonlinear
Schr\"odinger equations with a self-steepening type term appearing due to
retardation of the fiber material response to variations of the electromagnetic
signal. This equation is also used in investigations of the dynamics of
modulated waves propagating through a single nonlinear transmission network. We
describe its periodic solutions and the corresponding Whitham modulation
equations. The wave patterns generated by the initial parameter profiles are
composed of different building blocks which are presented in detail. It is
shown that evolution dynamics in this case is much richer than that for the
nonlinear Schr\"odinger equation. Complete classification of possible wave
structures is given for all possible jump conditions at the discontinuity. Our
analytic results are confirmed by numerical simulations.
