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Synchronization of gigahertz core resonances in multiple photonic crystal fiber cores by timing-modulated harmonic mode locking

MPS-Authors
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Yeh,  Dung-Han
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander Universität Erlangen-Nürnberg;

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He,  Wenbin
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Pang,  Meng
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
External;

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Jiang,  Xin
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Russell,  Philip St.J.
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Yeh, D.-H., He, W., Pang, M., Jiang, X., & Russell, P. S. (2021). Synchronization of gigahertz core resonances in multiple photonic crystal fiber cores by timing-modulated harmonic mode locking. Optica, 8(12), 1581-1585. doi:10.1364/OPTICA.442423.


Cite as: https://hdl.handle.net/21.11116/0000-0008-9165-2
Abstract
Synchronization of mechanical oscillators by optical forces is a topic that has been much explored in recent years, for example, in the context of SiN microdisk resonators. Here we report stable long-term synchronization of the core vibrations of three different photonic crystal fibers, driven intra-cavity by a 2 GHz train of timing-modulated pulses in a high harmonic opto-acoustically mode-locked fiber laser. The core resonances are equally spaced in frequency and are coupled purely by the optical field. Under the correct conditions, they become stably synchronized, being simultaneously driven by the timing-modulated pulse train. Floquet–Bloch theory, in which the pulses are treated as particles trapped in potential wells and coupled by optomechanical back-action, describes the complex temporal dynamics observed in the experiments. This unique system provides a novel means of modifying the temporal structure of pulse trains running at few-gigahertz repetition rates.