Fig. 6: Experimental zero-dispersion soliton formation, MR2.
From: Zero dispersion Kerr solitons in optical microresonators

a Experimental measurement of the resonator integrated dispersion Dint, and spectrally extended fitted solution. b ZDS(3) comb. c ZDS(2) combs, measured at maximum detuning using three pump powers, noted as effective average power coupled to ring (total power towards chip).