Dependence of a microresonator Kerr frequency comb on the pump linewidth

Peicheng Liao, Changjing Bao, Arne Kordts, Maxim Karpov, Martin H. P. Pfeiffer, Lin Zhang, Amirhossein Mohajerin-Ariaei, Yinwen Cao, Ahmed Almaiman, Morteza Ziyadi, Steven R. Wilkinson, Moshe Tur, Tobias J. Kippenberg, Alan E. Willner

Research output: Contribution to journalJournal articleResearchpeer-review


We experimentally investigate the dependence of Kerr comb generation, comb linewidth, and coherent system performance on the pump linewidth in a microresonator. We find that the generation of the primary comb can have a larger tolerance to the pump linewidth compared with that of the low-phase-noise comb. In addition, the linewidths of the generated combs are almost linearly dependent on the pump linewidth in the primary and low-phase-noise states. Furthermore, the optical signal-to-noise ratio penalty between the pump and generated Kerr combs in a coherent communication system is less than 0.2 dB in both the primary and low-phase-noise states, showing that Kerr frequency combs in these two states can have similar coherent system performance to the pump.
Original languageEnglish
JournalOptics Letters
Issue number4
Pages (from-to)779-782
Number of pages4
Publication statusPublished - 2017
Externally publishedYes


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