Figure 1

(a) Solid blue line: WA dispersion ${\kappa }_z$ vs $\kappa$. Dashed red line: $D_2$ vs $\kappa$, showing the two zero-diffraction points located at $\kappa =\pm \pi /2$. (b) Wave number ${\kappa }_{\mathrm{RR}}$ of the generated DifRR, as a function of the input soliton wave number ${\kappa }_0$. The red dashed line indicates the approximated formula ${\kappa }_{\mathrm{RR}}\simeq {\kappa }_0+3/\tan ({\kappa }_0)$ for the position of the resonant radiation, while the blue solid line is the result of the exact implicit formula given by Eqs. (6, 7). In both (a),(b) the gray shaded area indicates the region where bright solitons can propagate. (c),(d) Beam propagation in the ($n$, $z$) plane (c) and ($\kappa$, $z$) plane. (d) Parameters are $A_0=0.8$, $c=1.2$, ${\kappa }_0=0.7$, $N=100$.Reuse & Permissions