基于运动光栅光折变双光束耦合的刚性全息明孤子的动态演化

研究基于运动光栅双光束耦合的耗散光折变系统中的空间光孤子的动态演化问题.数值计算 表明，系统参数同这种孤子的稳定性密切相关.在某组系统参数下，孤子可以在晶体内稳定 传播足够远的距离.双光束耦合的相位与强度耦合系数之比越大，孤子的稳定性越好.讨论了 将这种系统应用于光学开关、中继及分路器件的可能性. 关键词： 空间光孤子 光折变非线性光学 耗散系统 全息光栅

Dynamical evolution of rigid holographic bright solitons based on photorefractive two-wave mixing with moving grating

It has been investigated that dynamical evolutions of spatial optical solitons i n dissipative photorefractive systems based on two-wave mixing with a moving gra ting. Numerical results show that the stability of rigid photorefractive hologra phic solitons in such systems depends strongly on the system parameters. The sol iton for some sets of system parameters can propagate stably in the crystal over a distance that is long enough. The larger the ratio of the phase to intensity coupling coefficient of two-wave mixing, the better the stability of solitons. P otential application in optical switches, repeaters or splitters is discussed.