137967.fig.002a
(a)
137967.fig.002b
(b)
Figure 2: Comparison of the theoretical Snell's law given by (15a) and (15b) (lines) against full numerical computations (points) for a unit-amplitude ( ) spatial soliton at a linear interface ( ) with and when (a) and (b) . Curves below (above) the line have ( ), so that the refraction is internal (external).