期刊
OPTICS EXPRESS
卷 24, 期 25, 页码 28795-28804出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.24.028794
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资金
- Air Force Office of Scientific Research (AFOSR) [FFA9550-15-1-0303]
- Advanced Research Projects Agency-Energy (ARPA-E) [DE-AR0000720]
- National Science Foundation (NSF) [ECS-0335765]
We experimentally and theoretically investigate the dynamics of microresonator-based frequency comb generation assisted by mode coupling in the normal group-velocity dispersion (GVD) regime. We show that mode coupling can initiate intracavity modulation instability (MI) by directly perturbing the pump-resonance mode. We also observe the formation of a low-noise comb as the pump frequency is tuned further into resonance from the MI point. We determine the phase-matching conditions that accurately predict all the essential features of the MI and comb spectra, and extend the existing analogy between mode coupling and high-order dispersion to the normal GVD regime. We discuss the applicability of our analysis to the possibility of broadband comb generation in the normal GVD regime. (C) 2016 Optical Society of America
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