Stability analysis of mode-coupling-assisted microcombs in normal dispersion

Zong Ren Yang, Pei Hsun Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We theoretically study the stability of mode-coupling-assisted frequency comb generation in normal-dispersion microresonators. With the aid of mode coupling, quantitative analysis of the modulational instability is explored in the parameter space of pump power and detuning. By exploring the coupled mode number, dispersion, and coupling strength in the normalized Lugiato-Lefever model, the modulational stability gain exists and yields extended spatial structures within the regime of eigenvalue bifurcations. Moreover, the dynamics and efficiency of microcombs are discussed, providing the accessibility of high-efficient, stable, and controllable combs. This work offers universal guidelines for operating mode-coupling-assisted combs in a normal-dispersion system.

Original languageEnglish
Pages (from-to)37637-37647
Number of pages11
JournalOptics Express
Issue number21
StatePublished - 10 Oct 2022


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