On-chip phase-shift induced control of supercontinuum generation in a dual-core Si3N4 waveguide

L Xia*, PJM van der Slot, M Timmerkamp, HMJ Bastiaens, C Fallnich, KJ Boller

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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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 Schrödinger 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.
Original languageEnglish
Pages (from-to)37472-37482
Number of pages11
JournalOptics express
Volume31
Issue number23
Early online date23 Oct 2023
DOIs
Publication statusPublished - 6 Nov 2023

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