All-optical trapping of on-chip pure-chi3 parametric-cavity solitons: towards metrology applications

Parametric Cavity Solitons (PDCSs) are a new class of temporal cavity solitons arising from nonlinear interaction between driving fields at frequencies different from the soliton carrier's. Such PDCSs are readily foundry-compatible through pure-$\chi^{(3)}$ nonlinear interaction between two pump lasers. Despite their unique properties, pure-$\chi^{(3)}$ PDCSs remain largely unexplored, especially in metrology applications. Here, we demonstrate that the recent Kerr-induced synchronization (KIS) technique for cavity soliton all-optical trapping applies to PDCSs. PDCSs show similar behavior for microcomb disciplining and offer unique metrology features due to their parametric nature.