期刊
LASER & PHOTONICS REVIEWS
卷 13, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201900223
关键词
gap soliton; kerr nonlinearity; nonlinear dynamics; optical lattice; topological edge state; topological photonics
资金
- Australian Research Council
- Strategic Fund of the Australian National University [DE190100430]
- Russian Foundation for Basic Research [18-02-00381, 19-52-12053]
- Institute for Basic Science in Korea [IBS-R024-Y1]
Topological photonics has emerged recently as a novel approach for realizing robust optical circuitry, and the study of nonlinear effects in topological photonics is expected to open the door for tunability of photonic structures with topological properties. Here, the topological edge states and topological gap solitons which reside in the same band gaps described by the nonlinear Dirac model are studied, in both one and two dimensions. Strong nonlinear interactions between these dissimilar topological modes, manifested in the efficient excitation of topological edge states by scattered traveling gap solitons are revealed. Nonlinear tunability of localized states is explicated with exact analytical solutions for the two-component spinor wave function. Our studies are complemented by spatiotemporal numerical modeling of the nonlinear scattering in 1D and 2D photonic lattices.
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