单模光纤中光孤子与准光孤子传输特性研究

Research on characteristics about optical soliton and quasi soliton transmitting in SMF

阐述了光学孤子的产生背景和基本理论,着重论述了光孤子形成的机理和光孤子的基本性质。分析了光孤子传输时所服从的标准非线性薛定谔方程和修正的非线性薛定谔方程并进行了数值模拟,得出了一些非常有意义的结果。最后系统地研究了Hasegawa等人提出的准光孤子概念,给出了准光孤子通信系统的组成、原理及影响光孤子通信的诸多因素并给出了相应地解决办法。

In this paper, the background of the discover of optical soliton is introduced, the basic theory about optical soliton and the mechanism of how the optical soliton exists and the basic qualities are emphatically expressed. The evolution of optical soliton that obey the nonlinear Sehr6dinger equation and the modified nonlinear SehrSdinger equation is studied. Through the numerical simulation, some important results are obtained. Then the quasi soliton named by Hasegawa et al. is studied, the parts and principle of quasi optical soliton communication system are demonstrated, and varieties of factors that affect the transmission of optical solitons is discussed, then the corresponding methods of how to resolve or reduce these are pointed out.