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multicore waveguide 1nonlinear dynamics 1photonic molecules 1self-phase modulation 1supercontinuum generation 1

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physics.optics2026

Extreme sensitivity of nonlinear trajectories enhances optical spectral broadening

Jiachen Wang, Koorosh Sadri, Mikael C. Rechtsman

The paper demonstrates that a waveguide made of multiple coupled cores (a photonic molecule) produces stronger self‑phase modulation and broader supercontinuum spectra than a singl…