低损耗平坦零色散光子晶体光纤的研究

摘要

设计了一种波长在800nm处具有低损耗平坦零色散特性的光子晶体光纤结构,应用多极法研究了结构参量空气孔直径d、孔距A对色散特性的影响和最外层空气孔直径对损耗的影响.该结构光纤在771 ～831nm波长范围内色散绝对值小于2ps/(nm·km),800nm处损耗为0.72dB/km.%A photonic crystal fiber structure with low loss and flattened zero dispersion was designed at 800nm, the effects of hole diameter d, hole distance A on dispersion properties and the diameter of the outside layer on loss properties were studied by the multipole method.The absolute value of dispersion coefficient of the PCF was less than 2ps/(nm · km) between 771nm and 83 lnm , and the loss was merely 0.72dB/km at 800nm.