自傅里叶信号在光纤中的传输特性

Transmission properties of self-Fourier signal in the optical fiber

提出了自傅里叶孤子概念。对自傅里叶孤子信号及自傅里叶高斯信号在光纤中的演变和传输进行了数值模拟和时频分析。结果表明,输入自傅里叶高斯信号,将演变成一类非自傅里叶孤子;三阶色散效应会影响由自傅里叶高斯信号所演变的孤子的震荡传输幅度,且引起孤子时域延迟、频谱不对称.

A new concept of self-Fourier soliton is proposed. The evolution and transmission of self-Fourier Gauss signal and self-Fourier soliton in optical fibers are studied numerically. The characteristics of signal evolution and transmission are studied analytically in both time domain and frequency domain. The results show that a class of non-self-Fourier soliton is obtained from inputting self-Fourier Gauss signals, and the amplitude of the soliton from the self-Fourier Gauss signal could be influenced by the effect of third-order dispersion on propagation. The effect of third-order dispersion also results in the time delay of the soliton and spectrum asymmetry of the soliton.