A Kerr Polarization Controller
arXiv:2104.13892 · doi:10.1038/s41467-021-27933-x
Abstract
Kerr-effect-induced changes of the polarization state of light are well known in pulsed laser systems. An example is nonlinear polarization rotation, which is critical to the operation of many types of mode-locked lasers. Here, we demonstrate that the Kerr effect in a high-finesse Fabry-Pérot resonator can be utilized to control the polarization of a continuous wave laser. It is shown that a linearly-polarized input field is converted into a left- or right-circularly-polarized field, controlled via the optical power. The observations are explained by Kerr-nonlinearity induced symmetry breaking, which splits the resonance frequencies of degenerate modes with opposite polarization handedness in an otherwise symmetric resonator. The all-optical polarization control is demonstrated at threshold powers down to 7 mW. The physical principle of such Kerr effect-based polarization controllers is generic to high-Q Kerr-nonlinear resonators and could also be implemented in photonic integrated circuits. Beyond polarization control, the spontaneous symmetry breaking of polarization states could be used for polarization filters or highly sensitive polarization sensors when operated close to the symmetry-breaking point.
References in corpus (18)
- Spontaneous symmetry breaking in a quenched ferromagnetic spinor Bose condensate
- Experimental demonstration of spontaneous chirality in a nonlinear microresonator
- Ultralow-power chip-based soliton microcombs for photonic integration
- Spatial multiplexing of soliton microcombs
- Spontaneous symmetry breaking of dissipative optical solitons in a two-component Kerr resonator
- Spectral Extension and Synchronisation of Microcombs in a Single Microresonator
- Universal Symmetry Breaking Dynamics for the Kerr Interaction of Counter-Propagating Light in Dielectric Ring Resonators
- Asymmetric balance in symmetry breaking
- Effects of self- and cross-phase modulation on the spontaneous symmetry breaking of light in ring resonators
- Theory of Kerr frequency combs in Fabry-Perot resonators
- Self-switching Kerr oscillations of counter-propagating light in microresonators
- Counter-rotating cavity solitons in a silicon nitride microresonator
- Interplay of Polarization and Time-Reversal Symmetry Breaking in Synchronously Pumped Ring Resonators
- Logic Gates based on Interaction of Counterpropagating Light in Microresonators
- Dissipative polarization domain walls in a passive driven Kerr resonator
- Optical memories and switching dynamics of counterpropagating light states in microresonators
- Experimental observation of the spontaneous breaking of the time-reversal symmetry in a synchronously-pumped passive Kerr resonator
- Polarization modulation instability in a nonlinear fiber Kerr resonator