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arXiv · 2104.13351

Dark-Bright Soliton Bound States in a Microresonator

Shuangyou Zhang·Toby Bi·George N. Ghalanos·Niall P. Moroney·Leonardo. Del Bino·Pascal Del'Haye
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Abstract

The recent discovery of dissipative Kerr solitons in microresonators has facilitated the development of fully coherent, chip-scale frequency combs. In addition, dark soliton pulses have been observed in microresonators in the normal dispersion regime. Here, we report bound states of mutually trapped dark-bright soliton pairs in a microresonator. The soliton pairs are generated seeding two modes with opposite dispersion but with similar group velocities. One laser operating in the anomalous dispersion regime generates a bright soliton microcomb, while the other laser in the normal dispersion regime creates a dark soliton via Kerr-induced cross-phase modulation with the bright soliton. Numerical simulations agree well with experimental results and reveal a novel mechanism to generate dark soliton pulses. The trapping of dark and bright solitons can lead to light states with the intriguing property of constant output power while spectrally resembling a frequency comb. These results can be of interest for telecommunication systems, frequency comb applications, ultrafast optics and soliton states in atomic physics.

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Shuangyou Zhang, Toby Bi, George N. Ghalanos, Niall P. Moroney, Leonardo. Del Bino, Pascal Del'Haye. 2021-04-27. Dark-Bright Soliton Bound States in a Microresonator. https://doi.org/10.1103/physrevlett.128.033901

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