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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.
Based on the nonlinear Schrödinger equation, a new method of all-optical phase pre-emphasis to suppress the nonlinear Kerr effect is proposed. The optical pulse is changed by superimposing a square phase value on the initial phase of the input light pulse at the transmitting end. Which can improve the anti-nonlinear Kerr effect of optical pulses in fiber transmission.Through theoretical research, simulation analysis and experimental verification of the feasibility of the method, experimental verification at the receiving end can improve the error rate of two orders of magnitude In the long-distance high-capacity optical fiber communication system has a very good application prospects.