An all-solid dispersion-compensating photonic crystal fiber based on mode coupling mechanism in dual-concentric core has been proposed. The mode coupling characteristics, dispersion, confinement loss of the fiber, and the influence on dispersion of some structure parameters are simulated by full-vector finite element method. By using the relationship between phase matching wavelengths and coupling strength with the change of fiber microstructure parameters, an all-solid dual-concentric-core dispersion-compensating photonic crystal fiber is presented. The structure parameters on dispersion characteristic are investigated. The results demonstrate that the proposed fiber has a large negative dispersion value 8465 ps/(nm·km) at 1550 nm. The effective mode area and the splicing loss to the standard single mode fiber are 12.8 μm² and 1.89 dB at 1550 nm, respectively. At 1550 nm, the confinement loss is less than 1 × 10⁻³dB/km and the bending loss with 2 cm bending diameter is less than 1 × 10⁻²dB/km.

中文翻译：

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基于双同轴芯模耦合机制的全固态色散补偿光子晶体光纤

提出了一种基于双同轴芯模耦合机制的全固态色散补偿光子晶体光纤。利用全矢量有限元方法模拟了光纤的模耦合特性，色散，禁闭损耗以及对某些结构参数的色散的影响。通过利用相位匹配波长与耦合强度之间的关系以及纤维微结构参数的变化，提出了一种全固态双同心色散补偿光子晶体光纤。研究了有关色散特性的结构参数。结果表明，所提出的光纤在1550 nm处具有较大的负色散值8465 ps /（nm·km）。有效模式面积和到标准单模光纤的熔接损耗为 12.8μ在1550 nm处分别为m ²和1.89 dB。在1550 nm处，限制损耗小于1×10 ^-3 dB / km，弯曲直径为2 cm的弯曲损耗小于1×10 ^-2 dB / km。