基于微结构光纤自相位调制效应全光再生研究

利用微结构光纤作为非线性介质,实现了基于自相位调制(SPM)效应的全光再生.分析了脉冲峰值功率、脉冲宽度和滤波器参量对再生特性的影响,比较了具有正常色散和反常色散的2种微结构光纤的光再生效果.结果表明:采用具有正常色散或反常色散的微结构光纤均可以实现较好的光再生效果,但正常色散可以降低展宽频谱中的震荡结构,获得更好的传输函数;输入光纤的峰值功率必需达到一定的强度值,同时选择好滤波器的中心波长和滤波带宽才能得到满意的再生效果,通过优化这些参量将会获得更好的光再生效果.

Investigation of All-Optical Regeneration Based on Self-Phase Modulation Effect in Microstructured Fiber

All-optical regeneration based on self-phase modulation in microstructured fiber is studied. The effects of pulse peak power into the fiber,pulse width and filter parameters on the regenerator performance are investigated. The influences of normal dispersion and anomalous dispersion of the microstructured fiber on optical regeneration are compared. The numerical results show that good optical regeneration performance can he obtained by using a microstructured fiber with normal dispersion or anomalous dispersion,but the normal dispersion decreases the oscillatory structure of the broadening spectra and obtains a better regenrator transfer function. In order to achieve optical regeneration,the input peak power into the microstructured fiber,pulse width and filter parameters need to meet certain requirements. By optimizing those parameters, a better regeneration result can be obtained.