非局域空间光孤子相互作用受到很多因素的影响,通过数值模拟和实验方法讨论了相位和外置偏压对向列相液晶中空间光孤子相互作用的影响.基于向列相液晶中的非局域非线性薛定谔方程,利用分步傅里叶变换算法进行数值求解,分析了相位对非局域空间光孤子相互作用的影响；另外,实验上在不同的入射条件下,研究了向列相液晶中双孤子的相互作用性质,得到了向列相液晶中两束光交叉点的位置与偏置电压的关系.

There are many factors influencing the interactions between nonlocal spatial solitons.It is showed that the interactions of two spatial solitons in nematic liquid crystals are dependent on phase and bias voltage by numerical simulation and experimental tests.Based on the nonlocal nonlinear Schro?dinger equation (NNLSE),numerical calculation is carried out by Fourier transform method.And then the influence of phase difference on interactions between nonlocal spatial solitons is analyzed in detail.By experimentally investigating the interaction properties of two solitons in nematic liquid crystals in different incident conditions,the relationship between the position of crosspoint and the bias voltage are got.