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Proceedings Paper

Gap solitons in partially parity-time-symmetric optical lattices
Author(s): Lijuan Ge
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Paper Abstract

The existence and stability of gap solitons are investigated in the semi-infinite gap of a partially parity-timesymmetric two-dimensional periodic potential (optical lattice), which is invariant under complex conjugation and reflection in a single spatial direction. Firstly we study the Bloch bands and band gaps of this partially parity-time-symmetric optical lattice. We find the partially parity-time-symmetric optical lattice can still possess all-real spectra and the phase transition point remains unchangeable. Secondly, we investigate the fundamental solitons in the semi-infinite gap of the partially parity-time-symmetric optical lattice. We get the continuous families of fundamental solitons, which own the same partial parity-time-symmetry as the partially parity-timesymmetric optical lattice. Thirdly, we study the linear stability of the fundamental solitons we have got. We also investigate nonlinear evolution of the partially parity-time solitons under perturbation. It has been found that the stable domains of fundamental solitons in the partially parity-time-symmetric optical lattices are bigger than those in parity-time-symmetric optical lattices.

Paper Details

Date Published: 28 February 2017
PDF: 8 pages
Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 1025606 (28 February 2017); doi: 10.1117/12.2268780
Show Author Affiliations
Lijuan Ge, Suzhou Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10256:
Second International Conference on Photonics and Optical Engineering
Chunmin Zhang; Anand Asundi, Editor(s)

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