周期线性变化光子晶体用于色散补偿的研究

Study of dispersion compensation of 1-D photonic crystals with periodically linear variations

文章研究了周期线性变化的一维光子晶体的色散补偿特性。根据周期性介质中电磁场在界面处的传递规律,利用传输矩阵方法分析了不同频率的光波在周期线性变化的一维光子晶体中的反射特性,结果表明这种光子晶体对于不同频率的光波成分具有不同的延时,利用这种延时特性,可以制作用于密集波分复用(DWDM)系统的色散补偿器件。

The dispersion compensation of one-dimensional （1-D） photonic crystals is studied in this paper. According to the transfer law of the electromagnetic field at the interface of periodic media, the reflectivity of optical waves at different frequencies in 1-D photonic crystals with periodically linear variations is analyzed by using transfer matrix method. The result shows that such photonic crystals have different delay characteristics for optical wave components at different wavelengths. On the basis of such delay characteristics, a novel dispersion compensator for DWDM systems can be manufactured.