Scientific Results

Nonlinear dynamics of comb generation in optical microresonators

Year: 2014

Authors: Hansson T., Modotto D., Wabnitz S.

Autors Affiliation: Dipartimento di Ingegneria dell\’Informazione, Universit√† di Brescia, via Branze 38, 25123 Brescia, Italy

Abstract: Various aspects of the nonlinear dynamics of Kerr frequency comb generation in optical microresonators are considered. It is shown that the comb generation process can, for the case of a single continuous wave pump, be given a simple interpretation in terms of modulational instability and that the essential dynamics can be captured using a three wave mode truncation for the pump mode and the dominant sideband pair. This idea is also extended using a four wave model to analyze an alternative dual pump configuration, for which comb generation may occur without a pump intensity threshold in both the normal and the anomalous dispersion regime.

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KeyWords: Dynamics; Laser resonators; Modulation; Optical resonators, Coupled mode equation; Dinger equation; Dual frequency; Frequency combs; Lugiato-Lefever equation; Micro resonators; Modulational instability, Nonlinear equations
DOI: 10.1117/12.2036830

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