Higher order mode suppression in high-Q anomalous dispersion SiN microresonators for temporal dissipative Kerr soliton formation

Arne Kordts, M. H. P. Pfeiffer, Hairun Guo, V. Brasch, T. J. Kippenberg

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

High-Q silicon nitride (SiN) microresonators enable optical Kerr frequency comb generation on a photonic chip and have recently been shown to support fully coherent combs based on temporal dissipative Kerr soliton formation. For bright soliton formation, it is necessary to operate SiN waveguides in the multimode regime in order to produce waveguide induced anomalous group velocity dispersion. However, this regime can lead to local disturbances of the dispersion due to avoided crossings caused by coupling between different mode families and, therefore, prevent the soliton formation. Here, we demonstrate that a single-mode "filtering" section inside high-Q resonators enables efficiently suppression of avoided crossings, while preserving high quality factors (Q similar to 10(6)). We verify the approach by demonstrating single soliton formation in SiN resonators with a filtering section. (C) 2016 Optical Society of America
Original languageEnglish
JournalOptics Letters
Volume41
Issue number3
Pages (from-to)452-455
Number of pages4
ISSN0146-9592
DOIs
Publication statusPublished - 2016
Externally publishedYes

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