Self-switching Kerr oscillations of counterpropagating light in microresonators

Michael T.M. Woodley, Lewis Hill, Leonardo Del Bino, Gian-Luca Oppo, Pascal Del’Haye

Research output: Contribution to journalLetterpeer-review

4 Downloads (Pure)


We report the experimental and numerical observation of oscillatory antiphase switching between counterpropagating light beams in Kerr ring microresonators, where dominance between the intensities of the two beams is periodically or chaotically exchanged. Self-switching occurs in balanced regimes of operation and is well captured by a simple coupled dynamical system featuring only the self- and cross-phase Kerr nonlinearities. Switching phenomena are due to temporal instabilities of symmetry-broken states combined with attractor merging, which restores the broken symmetry on average. Self-switching of counterpropagating light is robust for realizing controllable, all-optical generation of waveforms, signal encoding, and chaotic cryptography.
Original languageEnglish
Article number043901
Number of pages5
JournalPhysical Review Letters
Publication statusPublished - 29 Jan 2021


  • Kerr effect
  • microresonators
  • bifurcation
  • oscillations


Dive into the research topics of 'Self-switching Kerr oscillations of counterpropagating light in microresonators'. Together they form a unique fingerprint.

Cite this