Multipeaked Solitons in Parity-Time Complex Superlattice with Dual Periods
WANG Hong-Cheng1 , LING Dong-Xiong1** , HE Ying-Ji2
1 College of Electronic Engineering, Dongguan University of Technology, Dongguan 5238082 School of Electronics and Information, Guangdong Polytechnic Normal University, Guangzhou 510665
Abstract ：The existence and stability of multipeaked solitons are investigated in a parity-time symmetric superlattice with dual periods under both self-focusing and self-defocusing nonlinearity. For self-defocusing nonlinearity, dipole solitons with low power and all the odd-peak solitons can exist stably in the first gap, while dipole solitons with high power and even-peak (except two) solitons are unstable. For self-focusing nonlinearity, even-peak out-of-phase solitons can propagate stably in the infinite gap, while odd-peak in-phase solitons are unstable.
收稿日期: 2015-02-24
出版日期: 2015-07-30
:
42.65.Tg
(Optical solitons; nonlinear guided waves)
42.65.Jx
(Beam trapping, self-focusing and defocusing; self-phase modulation)
42.65.Wi
(Nonlinear waveguides)
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2015, Vol. 32 
