中文摘要：

研究了布拉格光栅中光波和声波的相互作用.利用多重尺度方法,将光声耦合方程约化为非线性薛定谔方程,并给出了单光声孤子和双光声孤子近似解析解.进一步讨论了光声孤子抑制光速的机理和双光声孤子的相互作用性质.

英文摘要：

We investigate the interaction between acoustic and optical signals in Bragg gratings.Using the multiple-scale method,we convert the optoacoustic coupled mode equations into a standard nonlinear Schrdinger equation.Thus,we obtain approximate solutions of the optoacoustic coupled mode equations,such as the single-soliton solutions and multiple-soliton solutions.Furthermore,we discuss the properties of slowing light of optoacoustic solitons and the interaction of two-soliton solutions.