饱和非线性波导阵列的离散孤子

Discrete Soliton in a Waveguide Array with Saturable Nonlinearity

利用扩展的双曲函数展开法,对饱和离散非线性波导阵列模型离散非线性薛定谔方程进行了研究,获得了多组新的精确解析局域解,包括亮孤子解、暗孤子解,以及亮、暗复合孤子解等,并给出了这些解存在对方程系数的特殊约束关系.

By applying extended hyperbolic function method,we study the saturable discrete nonlinear Schrodinger equation and obtained a number of new exact localized solutions,including discrete bright soliton solution,dark soliton solution,bright and dark soliton solution,and provide that a special relation is bound on the coefficients of the equation among the solutions obtained