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提出了一种基于全光分数阶傅里叶变换(optical fractional fourier transformation,OFRFT)的关于色散和自相位调制对光脉冲传输影响的分析方法,并基于该方法给出了一种新的光脉冲在光纤中传输最小损伤的方法,通过在发射端将输入的高斯光脉冲做OFRFT然后再送入到光纤中去传输,可以提高光脉冲抵抗色散和非线性的能力,仿真发现当色散占主要作用的时候,负阶数的分数阶傅里叶变换可以很大程度上减小光脉冲的展宽;当自相位调制作用占主要的时候,正阶数的分数阶傅里叶变换可以消除自相位调制作用的脉冲分裂效应.该方法在高速光纤通信中有应用意义.
An analysis method based on optical fractional fourier transformation (OFRFT) on the influence of dispersion and self-phase modulation on optical pulse transmission is proposed. Based on this method, a new optical pulse The method of transmitting the least damage in the optical fiber can improve the ability of the optical pulse to resist dispersion and nonlinearity by transmitting the input Gaussian optical pulse as OFRFT at the transmitting end and then into the optical fiber. The simulation shows that when dispersion plays a major role When the fractional Fourier transform of negative order can greatly reduce the pulse broadening, when the self-phase modulation plays a dominant role, the fractional Fourier transform of positive order can eliminate the self-phase modulation The pulse splitting effect.This method has the application significance in the high speed optical fiber communication.