The interaction of in-band and in-gap lattice soliton trains in optically induced two-dimensional photonic lattices

doi:10.1088/1674-1056/19/6/065203

Abstract We demonstrate the coherent interactions of lattice soliton trains, including in-band solitons (IBSs) and gap soliton trains (GSTs), in optically induced two-dimensional photonic lattices with self-defocusing nonlinearity. It is revealed that the $\pi$-staggered phase structures of the lattice soliton trains will lead to anomalous interactions. Solely by changing their initial separations, the transition between attractive and repulsive interaction forces or reversion of the energy transfer can be obtained. The `negative refraction' effect of the soliton trains on the interaction is also discussed. Moreover, two interacting IBSs can merge into one GST when attraction or energy transfer happens.

Keywords: soliton interaction in-band soliton gap soliton train photonic lattice

Received: 16 October 2009
Accepted manuscript online:

PACS:	42.65.Tg	(Optical solitons; nonlinear guided waves)
	42.70.Qs	(Photonic bandgap materials)

Fund: Project supported by the Northwestern Polytechnical University (NPU) Foundation for Fundamental Research and the Doctorate Foundation of NPU (Grant No.~CX200914).

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Liu Sheng(刘圣), Zhang Peng(张鹏), Xiao Fa-Jun(肖发俊), Gan Xue-Tao(甘雪涛), and Zhao Jian-Lin(赵建林) The interaction of in-band and in-gap lattice soliton trains in optically induced two-dimensional photonic lattices 2010 Chin. Phys. B 19 065203

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The interaction of in-band and in-gap lattice soliton trains in optically induced two-dimensional photonic lattices

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