  In this note, we generalize the nonlinearity-recovery result in [7] for
classical cubic nonlinear Schr\"odinger equations to higher-order Schr\"odinger
equations with a more general nonlinearity. More precisely, we consider a
spatially-localized nonlinear higher-order Schr\"odinger equation and recover
the spatially-localized coefficient by the solutions with data given by
small-amplitude wave packets.
