title: Spectro-temporal dynamics of Kerr combs with parametric seeding.
abstract: We report a joint theoretical and experimental investigation of the parametric seeding of a primary Kerr optical frequency comb. Electro-optic modulation sidebands matching multiple free-spectral ranges of an ultrahigh-Q millimeter-size magnesium fluoride disk resonator are used as seed signals. These seed signals interact through four-wave mixing with the spectral components of a stable primary comb and give rise to complex spectro-temporal patterns. We show that the new frequency combs feature multiscale frequency spacing, with major frequency gaps in the order of a few hundred gigahertz, and minor frequency spacing in the order of a few tens of gigahertz. The experimental results are in agreement with numerical simulations using the Lugiato-Lefever equation. We expect such versatile and coherent optical frequency combs to have potential applications in optical communications systems where frequency management assigns predefined spectral windows at the emitter stage.
authors.forename: Guoping
authors.initials: G
authors.lastname: Lin
authors.forename: Romain
authors.initials: R
authors.lastname: Martinenghi
authors.forename: Souleymane
authors.initials: S
authors.lastname: Diallo
authors.forename: Khaldoun
authors.initials: K
authors.lastname: Saleh
authors.forename: Aurélien
authors.initials: A
authors.lastname: Coillet
authors.forename: Yanne K
authors.initials: YK
authors.lastname: Chembo