论文部分内容阅读
理论分析了信号在频域中的相位共轭变换,分析表明,当输入信号取频域相位共轭后,其输出信号相当于输入信号时域包络的相位共轭和时间反转.在此基础上,分析了在双折射光纤中基于频域相位共轭技术的偏振信号失真的抑制和补偿机理,数值模拟了偏振孤子信号和偏振Gauss信号在中距相位共轭光纤系统中的传输演化过程.结果表明,利用频域相位共轭技术能够准确复原双折射光纤系统中的初始输入偏振信号,同时能够补偿色散和复原非线性效应所导致的信号失真.
The phase conjugation transformation of the signal in the frequency domain is analyzed theoretically. The analysis shows that when the input signal takes the phase conjugation of the frequency domain, the output signal is equivalent to the phase conjugation and the time reversal of the time envelope of the input signal Based on the analysis of the suppression and compensation mechanism of polarization signal distortion based on frequency-domain phase conjugation in birefringent fiber, the propagation evolution of polarization soliton signal and polarization Gauss signal in mid-pitch phase conjugate fiber system is numerically simulated The results show that the phase - conjugation technique can accurately recover the initial input polarization signal in the birefringent fiber system and can compensate the signal distortion caused by the dispersion and restoring nonlinear effects.