Vector Kerr cavity solitons in a pulse-pumped normal-dispersion fiber Kerr resonator
Phys. Rev. A 112, 023501 – Published 1 August, 2025
DOI: https://doi.org/10.1103/ck6k-db5z
Abstract
We demonstrate the formation of vector Kerr cavity solitons in a pulse-pumped normal dispersion fiber Kerr resonator. Such solitonic structures formed in normal-dispersion resonators typically manifest as flat-top solitonic pulses, known as platicons. The two orthogonally polarized modes inside the fiber resonator are pumped with the same conditions and the generation of vector platicons (VPs) is achieved via a spontaneous symmetry breaking (SSB) of the intracavity structures in a process when scanning the pump frequency from the blue-shift to the red-shift detuning side. The characteristics of the SSB are studied in detail. Also, the impact of the third-order dispersion (TOD) and the desynchronization on the VP dynamics are studied, revealing that the oscillating structure on the leading edge of VPs can be alleviated by introducing a desynchronization effect. What's interesting is that desynchronization can be used as an additional degree of freedom to control VP behaviors. For a small desynchronization, we observe the energy exchange between the two orthogonally polarized modes. For a large desynchronization, periodic and deterministic switching dynamics between the two orthogonally polarized modes can be obtained.
