Abstract
We experimentally investigate the nonlinear dynamics of two coupled fiber ring resonators, coherently driven by a single laser beam. We comprehensively explore the optical switching arising when scanning the detuning of the undriven cavity, and show how the driven cavity detuning dramatically changes the resulting hysteresis cycle. By driving the photonic dimer out-of-equilibrium, we observe the occurrence of stable self-switching oscillations near avoided resonance crossings. All results agree well with the driven-dissipative Bose-Hubbard dimer model in the weakly coupled regime.
Highlights
The spontaneous emergence of sustained periodic oscillations is a fascinating and ubiquitous phenomenon arising in nonlinear systems
Coupled ring resonators host rich nonlinear dynamics and have recently attracted a lot of attention for frequency-comb generation in microresonators. In this Research Letter, we report the observation of the spontaneous emergence of sustained oscillations induced by nonlinear self-interactions, between light beams propagating in two linearly coupled Kerr resonators
The bifurcation analysis of the driven-dissipative Bose-Hubbard (DDBH) dimer model predicts that continuous solutions unstable against periodic perturbations can be encountered for L 2.1 and that the instability leads to the emergence of stable oscillations
Summary
The spontaneous emergence of sustained periodic oscillations is a fascinating and ubiquitous phenomenon arising in nonlinear systems. The experimental investigation of the nonlinear dynamics of DDBH dimers is performed with two fiber cavities coupled by a 95/5 coupler.
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