Fig. 3: Wavelength dependence of the edge states.
From: Topological state engineering via supersymmetric transformations
Experimentally observed output intensities for different wavelengths (500 nm ≤ λ ≤ 720 nm) obtained by exciting (a) the nontopological and (b) the topological edge states of the SP1 lattice, schematically represented in c. The red dots indicate the excited waveguides. The relation between the wavelength used and its intensity measured at the output is represented in the inset. The total length of the sample is L = 10 cm and the SP1 lattice is composed of N = 49 waveguides.
