Massively parallel coherent laser ranging using soliton microcombs

Symmetry protection of topological states in multimode photonic resonator chains

“…The shape of DKS is given by the balance between dispersion and Kerr nonlinearity which results (in the simplest case) in the characteristic hyperbolic secant profile on a continuous wave background, while its amplitude is fixed due to the balance between coupling losses and parametric gain [20][21][22]. The generation of DKS in passive microresonators [19] that can be integrated on chip [23], has triggered the development of compact broadband high-repetition frequency combs for applications ranging from dual-comb spectroscopy [24], multichannel optical communication [25], and distance metrology [26][27][28]. Even though AMXs have been successfully employed to trigger the nonlinear dynamics in normal dispersion resonators [29][30][31][32] and to control disorder in perfect bright soliton crystals [33], it remains an undesirable effect as it disrupts the DKS formation process [16] and can induce instabilities such as intermode breathing [34].…”