Supplemental Material: Optical frequency-dependent opposite effective acoustic velocity dispersion in stimulated Brillouin scattering

This Supplemental Material provides additional derivations, experimental data and simulation on the following topics: (I) exact expression of the acoustic wave propagation constant q; (II) effective refractive index recovered from the group refractive index; (III) statistical analysis of measured BFS; (IV) measuring results for high nonlinear fiber and (V) simulation.