28 THz soliton frequency comb in a continuous-wave pumped fiber Fabry–Pérot resonator

Abstract

We report the generation of an optical frequency comb featuring a 28 THz bandwidth, sustained by a single 80 fs cavity soliton recirculating in a fiber Fabry–Pérot resonator. This large spectrum is comparable to frequency combs obtained with microresonators operating in the anomalous dispersion regime. Thanks to the compact design and the easy coupling of the resonator, cavity solitons can be generated in an all-fiber experimental setup with a continuous wave pumping scheme. We also observe the generation of a dispersive wave at higher frequencies, which is supported by higher-order dispersion. These observations align remarkably well with both numerical simulations and the established theory of cavity solitons.

Unexpected phase-locked Brillouin Kerr Frequency comb in fiber Fabry Perot resonators

“…For clarity and consistency throughout the text, they are referred to as cavity #1, #2 and #3 and their parameters are listed in Table I. As reported, these devices are very practical for generating OFCs in the GHz range [12,25,[45][46][47]. Nonetheless, due to their few cm length, these systems are sensitive to mechanical and acoustical vibration, and thermal fluctuations, requiring a stabilization or isolation.…”

“…Nonetheless, due to their few cm length, these systems are sensitive to mechanical and acoustical vibration, and thermal fluctuations, requiring a stabilization or isolation. For this study, we employed an active laser stabilization system to counteract cavity resonance variations, a technique that has shown excellent results in previous studies [15,43,46]. The FFP resonators are exploited in the experimental setup described in Fig.…”