【作者】 梁健； 云茂金； 孔伟金； 孙欣； 张文飞； 席思星； 尹霞； 杨学宗；

【机构】 青岛大学物理科学学院；

【摘要】 通过在纤芯引入两个小空气孔以及将包层的第一环和中间一行变为椭圆空气孔来造成光纤模式的不对称性,获得了高双折射光子晶体光纤。利用全矢量平面波展开法对所设计的光子晶体光纤的模式双折射、色散及模场特性进行了分析。结果表明,该结构光子晶体光纤可以在较宽的波长范围内产生10-3量级的模式双折射。通过对该光子晶体光纤的进一步优化,可以在获得高双折射的同时实现超平坦色散及小模场特性。更多还原

【Abstract】 A highly birefringent index-guiding photonic crystal fibers with flattened dispersion and low effective area is proposed by introducing elliptical air holes in the cladding and small holes both in the core area and cladding.With the plane wave expansion (PWE) method,the birefringent,dispersion and effective area of the fundamental modes in such photonic crystal fibers are analyzed in detail.The simulation result shows that high birefringence with a magnitude of the order of 10-3,flattened chromatic dispersion from 1100nm to 1800nm and low effective area (which mean high nonlinearity) are obtained.Furthermore,the influences on the birefringence and dispersion by geometrical parameters have also been discussed and a modest number of design parameters are given.更多还原