In this presentation, we will be reporting two recent results from our group: Drude soliton dynamics in silicon slow-light photonic crystals [1] and frequency comb dynamics in silicon nitride ring micro-resonators [2].In the first half of the presentation, we will report the first observations and ultrafast mapping of soliton dynamics in highly dispersive silicon photonic crystals with cross-correlation frequency-resolved optical gating spectroscopy and deterministic pulse recovery at 500 attojoule sensitivities and few femtosecond timing resolutions.