近零超平坦色散液体填充光子晶体光纤的设计

Design of liquid-filled photonic crystal fibers with nearly zero ultra-flattened dispersion

建立填充高折射率温度系数液体的六边形折射率引导型光子晶体光纤的数值模型,利用矢量光束传输法研究该类光纤的几何和光学参数对色散的影响,通过对孔径、孔间距等结构参数进行优化调整,设计出在1.46～1.65μm内色散系数介于0±0.5ps/(nm.km)之间的超平坦色散光子晶体光纤.

The numerical model of an index-guiding hexagonal photonic crystal fibers filled by liquid with high refractive index and sensitive to temperature was set up and the influence of the geometrical and optical parameters of this kind of fibers on the dispersion was investigated by using the vectorial beam propagation method.The photonic crystal fibers with ultra-flattened and near zero dispersion were designed by adjusting the diameters of air holes and their pitch,their absolute value of dispersion being less than 0.5ps/（nm·km） for wave length between 1.46 μm and 1.65 μm.