光纤非线性孤立子通信

在单模光纤异常色散区,当非线性与色散平衡时,初始注入的光脉冲演化形成光孤立子。利用光孤立子可实现无畸变传输,大大提高光纤通信系统的容量和中继距离。本文简述了光孤立子产生的机理,用一种简明通用的方法求得了多种形式的光纤非线性传输方程,给出了无损耗非线性传输方程基态孤立子解完整的一般表示式,同时对孤立子系统设计进行了讨论。

OPTICAL FIBER NONLINEAR SOLITON COMMUNICATION

In anomalous dispersion of monomode optical fiber, an optical soliton is evolved from an optical pulse in the fiber when the nonlinearity is balanced by dispersion. Transmission without distortion, which can greatly improve the capacity and relaying distance of the optical communication system, can be realized by using optical solitons. The mechanism of the generation of optical solitons is expounded. Afew forms of nonlinear transmission equation are obtained by using a simple and clear method. The general complete expression of elementary soliton solution of the nonlinear transmission equation without losses is given, and the design of the soliton transmission system is discussed.