Kerr combs from normal and anomalous dispersion silicon nitride microresonators

Nonlinear wave mixing in optical microresonators offers a route to chip-level optical frequency combs with many promising applications. The properties of the combs generated depend crucially on the interaction between nonlinearity and dispersion. This paper will discuss our research on Kerr comb generation in silicon nitride chip-scale microresonators, with an emphasis on distinct features observed in the normal and anomalous dispersion regimes. The topics covered include comb initiation, comb coherence and mode-locking, power conversion efficiency, and second-harmonic involved comb generation.

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