C. Kruckel, A. Fülöp, P. Andrekson, V. Torres‐Company
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Bandgap engineering in nonlinear silicon nitride waveguides
We show that controlling the bandgap of SiN provides an additional degree of freedom for engineering waveguides for nonlinear optics. We show an optimized structure with γ· max Leff = 0.17 rad/W and absence of nonlinear loss.