Kavli Affiliate: Kerry Vahala
| First 5 Authors: Qing-Xin Ji, Qing-Xin Ji, , ,
| Summary:
In microcombs, solitons can drive non-soliton-forming modes to induce optical
gain. Under specific conditions, a regenerative secondary temporal pulse
coinciding in time and space with the exciting soliton pulse will form at a new
spectral location. A mechanism involving Kerr-induced pulse interactions has
been proposed theoretically, leading to multicolor solitons containing
constituent phase-locked pulses. However, the occurrence of this phenomenon
requires dispersion conditions that are not naturally satisfied in conventional
optical microresonators. Here, we report the experimental observation of
multicolor pulses from a single optical pump in a way that is closely related
to the concept of multicolor solitons. The individual soliton pulses share the
same repetition rate and could potentially be fully phase-locked. They are
generated using interband coupling in a compound resonator.
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