期刊
PHYSICAL REVIEW A
卷 85, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.85.013831
关键词
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资金
- National Natural Science Foundation of China [11174061]
- Guangdong Province Natural Science Foundation of China [S2011010005471]
- CNCS-UEFISCDI [PN-II-ID-PCE-2011-3-0083]
We report the existence and stability of lattice solitons in parity-time (PT)-symmetric mixed linear-nonlinear optical lattices in Kerr media. We focus on studying the characteristic effects on soliton propagation in the semi-infinite gap if we consider different amplitudes of real and imaginary parts of both the linear refractive index modulation profile and of periodic nonlinearity-modulation spatial distribution. It was found that the combination of PT-symmetric linear and nonlinear lattices can stabilize lattice solitons and can provide unique soliton properties. It is revealed that the parameters of the linear lattice periodic potential play a significant role in controlling the extent of the stability domains and that the lattice solitons can stably propagate only in the low-power regime.
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