一种光纤通信系统中非线性克尔效应抑制新方法

本文从非线性薛定鄂方程出发,提出了一种全光学的相位预加重来抑制非线性克尔效应的新方法,通过在发射端将输入光脉冲的初始相位上叠加一个平方相位值,改变光脉冲的初始相位值,从而提高光脉冲在光纤传输中抗非线性克尔效应能力.通过理论研究,仿真分析以及实验验证了该方法的可行性,实验验证在接收端可以提高误码率2个数量级以上.在长距离大容量光纤通信系统中有很好的应用前景.

A novel simple fiber nonlinearity suppression method in fiber-optic transmission systems using an all optical phase pre-emphasis

In this paper we propose, simulate and experimentally verify a novel and simple optical phase pre-emphasis method, which is capable of mitigating fiber nonlinearity in dense wavelength division mult-DWDM optical translation systems. In our simple method, each transmitted wavelength is modulated by a phase modulator driven by a periodic parabolic electric driving signal. Both of the simulations and experimental results verify that the proposed method can effectively mitigate the fiber Kerr nonlinearity.