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提出了一种新的高双折射光子晶体光纤结构.应用全矢量频域有限差分方法所做的数值分析表明:该结构光纤基模的两个正交偏振态不再简并,其模式呈现很强的线偏振特性,并且模式双折射与结构参数设置有密切关系.通过选择合适的结构参数,可以使之达到10-2量级,比传统的D型和熊猫型保偏光纤高出2个数量级.合理设计光纤包层的几何结构,可以取得理想的色散效果.这种结构的光子晶体光纤可用于制作具有适当色散特性或偏振特性的保偏光纤及相关光纤器件.
A new high-birefringence photonic crystal fiber structure is proposed.The numerical analysis of the finite-difference method using full-vector frequency domain shows that the two orthogonal polarization states of the fiber base are no longer degenerate, Strong linear polarization, and mode birefringence and structure parameters are closely related to the configuration by selecting the appropriate structural parameters, you can make it up to 10-2 orders of magnitude higher than the traditional D-type and panda-type polarization-maintaining fiber 2 Order of magnitude.A reasonable design of the optical fiber cladding geometry can achieve the desired dispersion effect.The photonic crystal fiber of this structure can be used to make polarization-maintaining fiber and related fiber optic devices with proper dispersion or polarization characteristics.