Fig. 1. Profiles of singl-hump gap solitons of the cubic-quintic GPE ( ): (a), (b) = 0.1; (c), (d) = 0.99. Shaded regions represent lattice sites, i.e., regions of low potential values . 3−5次GPE的单峰带隙孤子( )　(a), (b) ; (c), (d) . 阴影部分表示外势 低处

Fig. 2. Amplitudes of single-hump gap solitons v.s. nonlinear interaction strength.单峰带隙孤子的振幅随相互作用强度的变化( )

Fig. 3. The ratio of three-body energy to two-body energy for on-site solitons with different interaction strength.on-site孤子三体相互作用能量和两体相互作用能量的比

Fig. 4. Profiles of double-hump gap solitons of the cubic-quintic GPE ( ) (a), (b) = 0.1; (c), (d) = 0.99. Shaded regions represent lattice sites, i.e., regions of low potential values . 3−5次GPE的同相偶极孤子和异相偶极孤子( )　(a), (b) (c), (d) . 阴影部分表示外势 低处

Fig. 5. Contour plots of for perturbed gap solitons: (a) On-site soliton; (b) in-phase dipole soliton; (c), (d) out-phase dipole soliton. 不同类型带隙孤子的动力学演化　(a) on-site孤子; (b) 同相偶极孤子; (c), (d) 异相偶极孤子

Fig. 6. (a), (c) Profiles of sub-fundamental gap solitons (red lines) lie in the first bandgap. The solid blue lines denote the external potential; (b), (d) contour plots of for perturbed gap solitons. (a), (c) 第一带隙中的亚基本带隙孤子(红色). 蓝线表示外势; (b), (d) 亚基本带隙孤子的动力学演化

Fig. 7. Contour plots of for in-phase dipole solitons lie in the first bandgap with (a) and (b) . 第一带隙中同相偶极孤子　(a) 和(b) 时的动力学演化