Dissipative Kerr Soliton for Microcomb Optical Clock: from Dispersion Engineering to Nonlinear Synchronization

Frequency combs and an atomic-transition stabilized lasers are the two primary elements of an optical clock. We address the on-chip integration of the comb, including dispersion engineering, photonics' potential for flexible microcombs, and a novel technique for passively synchronizing the master laser and the microcomb.