有偏压的光伏光折变空间孤子波方程的数值处理

Numerical method on wave equation of spatial solitons in biased photorefractive photovoltaic media

利用类Crank-Nicholson格式数值分析方法研究了有偏压的光伏光折变空间孤子的动态演化,数值模拟结果表明:亮孤子可以克服一定的微扰,而暗孤子克服微扰的能力较差.实践证明,类Crank-Nicholson格式数值分析方法求解光折变空间孤子波方程具有较高的运算效率和很好的稳定性.

The dynamical evolution of spatial solitons in biased photorefractive photovoltaic media is investigated by using a Crank-Nicholson-like approach.The numerical study indicates that the bright solitons are stable against small perturbations,while the dark ones are not.The practice demonstrates that the Crank-Nicholson-like approach has higher efficiency and better stability than others in solving the equation of photorefractive spatial solitonic wave.