摘要
文章从包含高阶效应的非线性薛定谔方程出发 ,基于一种二阶和三阶色散都作了完全补偿 (零路径平均色散 )的光纤级联系统模型 ,用数值法对亚皮秒 (几百飞秒 )高斯光脉冲在密集色散管理光纤 (放大周期远远大于色散补偿周期 ,La >>Lc)中的传输特性做了研究。结果表明 :啁啾化亚皮秒光脉冲在短周期色散补偿光纤中可以实现稳定传输。色散管理的密集化程度越高 ,即色散补偿周期越短 ,光脉冲在光纤中传输时的呼吸度越小 ,前后脉冲间的相互作用也越弱 ,有利于提高光纤传输系统的性能。此外 ,由于色散管理孤子的系统功率较小 ,因此高阶非线性项的影响不大。
Starting from the higher-order nonlinear schroedinger equation (HNLSE), a gaussian sub-picosecond optical pulse is transmitted in zero-path-averaged second- and third-order dispersion-managed fiber, and the dispersion compensation cell is very shorter than optical amplification period (L c<<L a). It demonstrates that, the chirped sub-picosecond optical pulse can realize stable transmission by using the technology of dense dispersion-managed. Dense dispersion management can reduce the breathing degree of optical pulse during transmitting, and also can weaken the interaction between neighboring optical pulses. Furthermore, the influence of the higher-order nonlinear effect is very weak under lower system power in dispersion-managed systems.
出处
《量子光学学报》
CSCD
2002年第2期81-84,共4页
Journal of Quantum Optics
