基于脉冲对交叉相位调制的亮脉冲的压缩  

Compression of Bright Optical Pulse by Pulse Pair in the Cross-phase Modulation

作　　者：李科[1] 余震虹[1] 

机构地区：[1]江南大学物联网工程学院

出　　处：《光谱实验室》2013年第2期661-664,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：江苏省气体传感器工程技术研究中心

摘　　要：提出了一种利用色散位移光纤(DSF)压缩波长位于光纤正常色散区的亮脉冲的方法。即让亮脉冲与一个中心波长位于光纤反常色散区的强脉冲对在光纤中共同传输,在适当条件下,交叉相位调制(XPM)效应会导致亮脉冲的压缩。通过分步傅里叶方法(SSFM)对这一压缩过程进行数值模拟和分析,结果表明高斯脉冲的脉宽被压缩了9.8倍,峰值功率增加了6.5倍,且该方法可以有效地避免脉冲走离效应,使脉冲获得更好的压缩效果。A method that can lead to bright optical pulse compression in the normal-dispersion region of dispersion-shifted fiber （DSF） is proposed. It consists of co-propagating a bright pulse with an intense pulse pair, the center wavelength of which is in the anomalous-dispersion region of the fiber. Under appropriate conditions, the bright pulse compression that caused by cross-phase modulation （XPM） effect is studied numerically by split-step Fourier method （SSFM）. The results indicate that the pulse-width of Gaussian pulse has been compressed by 9.8-fold and the peak power has been increased by 6.5 times. It is found that this method can avoid pulse walk-off effect effectively and achieve better compression of bright pulse.

关 键 词：非线性光学 脉冲压缩 交叉相位调制 色散位移光纤 

分 类 号：TN929.11[电子电信—通信与信息系统]