<ul><li>Abnormal versions of synchronization patterns known as “Arnold’s tongues” have been observed in a femtosecond fibre laser that generates oscillating light pulses.</li><li>Arnold’s tongues are found in all real-world synchronized systems, and they are an important indicator of synchronization.</li><li>In the new work, researchers studied Arnold’s tongue patterns in a laser that emits solitons and found unusual shapes instead of the typical triangular patterns.</li><li>The researchers also explored the effects of holes within the ray-shaped tongue regions, which can destabilize the synchronized system and impact practical applications.</li></ul>

Abnormal ‘Arnold’s tongue’ patterns appear in a real oscillating system

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