Fig. 4: Hilbert-NLS soliton energy dependence on β1.
From: Nonlinear wave propagation governed by a fractional derivative

Average energy per soliton with np = 5 (orange circles) and np = 2 (blue diamonds) Hilbert-NLS solitons in the cavity versus dispersion coefficient β1. The straight lines are linear fits of the data. The error bars were derived from average power measurements.