中文摘要：

采用全矢量平面波展开法,以聚合物PMMA为基材,研究了椭圆芯非六角对称聚合物光子晶体光纤（Photonic Crystal Fibers,PCFs）的传输模场和偏振特性,从理论上分析了其模式双折射和光纤结构参量的关系.研究结果表明,该PCFs基模的两个正交偏振态不再简并,模场呈现明显的椭圆并具有较强的线偏振特性;另外,该光纤的模式双折射强烈地依赖于光纤的结构参量,通过适当调节光纤的相对孔间距比,有望在给定波长范围内实现更高双折射单模运行.

英文摘要：

The polarization properties of polymer photonic crystal fibers with elliptical core non-hexangular symmetry were investigated by adopting Full Vectorial Plane-Wave Expansion based on polymer PMMA. The dependence of modal birefringence and the fiber parameter has been numerically analyzed. According to the theory results,the two orthogonal polarized states of the fundamental mode become non-degenerate in this PCFs and appear strongly linear polarization. Another, the modal birefringence is strongly dependent on structure parameters of the fibers, and the high birefringence can been obtained at a given wavelength through choosing a suitable relative holes-spacing rate. These results are a foundation theoretically to fabricate high birefringence polymer photonics crystal polarization maintaining fibers.