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. 2015 Aug 27;5:13355. doi: 10.1038/srep13355

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(a), Resonance frequency offsets of the second-order mode family with respect to the fundamental mode family (top) as well as the zoom-in view of the Kerr frequency comb (bottom). (b), Simulated Kerr frequency comb by solving the Lugiato-Lefever equation, also showing a 4-nm periodic spectral modulation when the local dispersion disruptions are included in the model.