fs光孤子脉冲传输过程中四阶色散研究  

Study for Fourth-order Dispersion of fs Soliton Pulse Propagation

作　　者：谢小平[1] 赵尚弘[1] 董淑福[1] 夏贵进[1] 战胜宝[1] 武自录[2] 

机构地区：[1]空军工程大学电讯工程学院 [2]中国科学院西安光学精密机械研究所,西安710068

出　　处：《光电子．激光》2002年第4期368-370,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目 (60 0 0 70 0 3 );国家重点实验室开放基金资助项目 (YAK2 0 0 0 4)

摘　　要：给出了考虑四阶色散的飞秒光孤子传输方程 ,从脉冲形状和脉冲频谱两个方面数值分析了四阶色散带来的影响 ,得到四阶色散使脉冲展宽 ,并使脉冲光谱出现旁瓣的结论。提出了用异常二阶色散和余弦调制进行相位综合补偿的方法 ,得到了脉冲相位在 2 2 0 ps时间宽度上能保持平滑 。The transmission equation of femtosecond soliton is given considering the effects of fourth order dispersion,and its effects on pulse shape and pulse spectra are analyzed numerically.The conclusion show that the pulse width is expanded and the side spectra on caused by fourth order dispersion were obtained.The method to compensate the pulse phase by the unusual second order dispersion and cosine phase modulation have been given.The result that pulse phase can be kept smoothness in 220 ps time sect and the pulse width can be kept the original size.

关 键 词：光孤子脉冲传输过程 四阶色散 光纤通信 余弦调制 飞秒 相位补偿 

分 类 号：TN929.11[电子电信—通信与信息系统]