arbitrary frequency-dependent nonlinearities. In particular, we focus on the effect of a zero-nonlinearity
wavelength within the spectral region of interest. … However, there are few works in the
literature on a complete analysis of these phenomena in the presence of a zero-nonlinearity
wavelength (ZNW) [3]. In this work, we present the first steps in this direction. First, we show
that new mathematical tools are needed, as the generalized nonlinear Schrödinger …