Fig. 5: The topological boundary state tuned by the Kerr nonlinearity. | Nature Communications

Fig. 5: The topological boundary state tuned by the Kerr nonlinearity.

From: A topological nonlinear parametric amplifier

Fig. 5

a Band diagram of the topological waveguide for different input power. Distribution of the wave function for the b boundary mode, c left-hand edge mode, and d the right-hand edge mode. e Amplitude variation induced by the Kerr perturbation for v/w = 0.17 (Blue) and v/w = 0.7 (Magenta).

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