Extended Data Fig. 2: Structure of a programmable nonlinear channel waveguide.
a, SEM image of the cross-section of a programmable nonlinear channel waveguide. We highlight the boundaries between different materials with dashed lines. Scale bar, 2 μm. b, Numerically simulated distribution of the vertical electric field Ey of the fundamental TM mode at wavelengths of 1,560 nm (left) and 780 nm (right). Scale bar, 1 μm. The simulation was performed with EMpy (ref. 52).
