In a defected dimer waveguide lattice, fourth-order diffraction enlarges the band gap and reshapes the stability regions of topological edge and defect gap solitons.
Reflection-free one-way edge modes in a gyromagnetic photonic crystal
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Topological linear and nonlinear gap modes in defected dimer lattice with fourth-order diffraction
In a defected dimer waveguide lattice, fourth-order diffraction enlarges the band gap and reshapes the stability regions of topological edge and defect gap solitons.