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arXiv · 2307.03939

On-Chip Phase-Shift Induced Control of Supercontinuum Generation in a Dual-Core Si$\mathbf{_{3}}$N$\mathbf{_{4}}$ Waveguide

Lisi Xia·Peter J. M. van der Slot·Maximilian Timmerkamp·Bert Bastiaens·Carsten Fallnich·Klaus J. Boller
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Abstract

We investigate on-chip spectral control of supercontinuum generation, taking advantage of the additional spatial degree of freedom in strongly-coupled dual-core waveguides. Using numerical integration of the multi-mode generalized nonlinear Schr\"odinger equation, we show that, with proper waveguide cross-section design, selective excitation of supermodes can vary the dispersion to its extremes, i.e., all-normal or anomalous dispersion can be selected via phase shifting in a Mach-Zehnder input circuit. The resulting control allows to provide vastly different supercontinuum spectra with the same waveguide circuit.

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Lisi Xia, Peter J. M. van der Slot, Maximilian Timmerkamp, Bert Bastiaens, Carsten Fallnich, Klaus J. Boller. 2023-07-08. On-Chip Phase-Shift Induced Control of Supercontinuum Generation in a Dual-Core Si$\mathbf{_{3}}$N$\mathbf{_{4}}$ Waveguide. https://doi.org/10.1364/oe.501938

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