论文部分内容阅读
针对六边形晶格微结构光纤,采用有限差分波束传播法对多孔光纤的模式双折射特性进行数值模拟,分析了横截面结构参数的变化对模式双折射的影响。得到了两组合适的光纤结构参数,其偏振拍长可以在较宽的波长范围内基本保持稳定,具有较好的消色差特性:一种结构的偏振拍长在1310nm波长附近的工作带宽可达200nm;另一种结构的偏振拍长在1550nm波长附近的工作带宽可达260nm。这两种结构的光纤均适合制作宽带稳定的消色差波片。
For the hexagonal lattice microstructured fiber, the finite difference beam propagation method is used to simulate the mode birefringence of porous optical fiber. The effect of the change of cross-sectional structural parameters on the mode birefringence is analyzed. Two sets of suitable optical fiber structure parameters are obtained. The polarization beat length can be kept stable in a wide wavelength range and has better achromatic characteristics. The polarization bandwidth of a structure is about 1310 nm and the working bandwidth is up to 200nm; another structure of the polarization beat length in the vicinity of 1550nm wavelength bandwidth up to 260nm. Both types of fibers are suitable for broadband broadband achromatic wave plates.