研究了主客体式光折变聚合物中空间明孤子的动态演化特性 ,讨论了振幅微扰和宽度微扰对其传播特性的影响 .结果表明 ,入射波为明孤子波时 ,能够在聚合物中稳定直线传播 ;在较小微扰情况下 ,孤子波经短距离传播后能够演化为明孤子波 ;当微扰比较大时 ,光波不能在聚合物中稳定传播 ,而是呈现周期性震荡现象 The dynamic evolution characteristics of the space bright solitons in host-guest photorefractive polymers are investigated. The effects of amplitude perturbation and width perturbation on their propagation properties are discussed. The results show that when the incident wave is a bright soliton wave, In the case of small perturbation, the soliton wave can evolve into a bright soliton wave after it propagates over a short distance. When the perturbation is relatively large, the light wave can not stably propagate in the polymer, but presents the phenomenon of periodic oscillations