Abstract
The generation of temporal cavity solitons in microresonators results in coherent low-noise optical frequency combs that are critical for applications in spectroscopy, astronomy, navigation or telecommunications. Breather solitons also form an important part of many different classes of nonlinear wave systems, manifesting themselves as a localized temporal structure that exhibits oscillatory behaviour. To date, the dynamics of breather solitons in microresonators remains largely unexplored, and its experimental characterization is challenging. Here we demonstrate the excitation of breather solitons in two different microresonator platforms based on silicon nitride and on silicon. We investigate the dependence of the breathing frequency on pump detuning and observe the transition from period-1 to period-2 oscillation. Our study constitutes a significant contribution to understanding the soliton dynamics within the larger context of nonlinear science.
Highlights
The generation of temporal cavity solitons in microresonators results in coherent low-noise optical frequency combs that are critical for applications in spectroscopy, astronomy, navigation or telecommunications
The Lugiato– Lefever equation (LLE) allows for modelling of rich cavity dynamics, including a variety of instabilities and in particular, predicts the existence of persistent breathing cavity solitons (CSs) in optical resonators pumped by a continuous-wave laser[20,21,32,33]
We present the evolution of the optical spectrum and the cavity transmission in Fig. 1c,d, respectively, as D is ramped up from À 2.9 to 12, this time seeding the simulation with a noise corresponding to one photon per frequency mode
Summary
The generation of temporal cavity solitons in microresonators results in coherent low-noise optical frequency combs that are critical for applications in spectroscopy, astronomy, navigation or telecommunications. We present the evolution of the optical spectrum and the cavity transmission in Fig. 1c,d, respectively, as D is ramped up from À 2.9 to 12, this time seeding the simulation with a noise corresponding to one photon per frequency mode.
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