Breathing dynamics of symmetry-broken temporal cavity solitons in Kerr ring resonators

Gang Xu, Lewis Hill, Julien Fatome, Gian-Luca Oppo, Miro Erkintalo, Stuart G. Murdoch, Stéphane Coen

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14 Citations (Scopus)
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We investigate theoretically and experimentally the instabilities of symmetry-broken, vectorial, bright cavity solitons (CSs) of two-mode nonlinear passive Kerr resonators. Through comprehensive theoretical analyses of coupled Lugiato–Lefever equations, we identify two different breathing regimes where the two components of the vectorial CSs breathe respectively in-phase and out-of-phase. Moreover, we find that deep out-of-phase breathing can lead to intermittent self-switching of the two components, spontaneously transforming a soliton into its mirror-symmetric state. In this process, solitons are also sometimes observed to decay. All our theoretical predictions are confirmed in experiments performed in an optical fiber ring resonator, where CS symmetry breaking occurs across the polarization modes of the resonator. To the best of our knowledge, our study constitutes the first experimental report of breathing instabilities of multi-component optical solitons of driven nonlinear resonators.
Original languageEnglish
Pages (from-to)1486-1489
Number of pages4
JournalOptics Letters
Issue number6
Publication statusPublished - 14 Mar 2022


  • temporal cavity solitons
  • bright solitons
  • dissipative solitons
  • nonlinear optics
  • ring resonators
  • vector solitons


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