Abstract
We have experimentally realized the self-generation of dense trains of spin-wave solitons in active magnetic-film ring resonators. The principle of the soliton auto-oscillator was based on the nonlinear interaction of two copropagating spin waves having the ratio between their group velocities equal to 2 and the transmission bands well separated in the frequency space. We show that under these conditions up to six dark solitons can simultaneously circulate in the active ring. The solitonic nature of the generated pulses is proven by the comparison of the obtained waveforms with those calculated on the basis of the nonlinear Schr\odinger equation model.
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