We demonstrate theoretically that SBS threshold can be increased significantly by many-mode excitations in multimode fibers. We experimentally focus multimode excitation to a diffraction limited spot, leading to high SBS threshold with good beam quality.

We experimentally demonstrate efficient suppression of stimulated Brillouin scattering in multimode fibers. By distributing the power in a number of high-order modes, the SBS threshold is three times as much as that for fundamental-mode-only excitation.