全固态双层芯结构色散补偿微结构光纤

发布时间：2018-08-02 15:07

【摘要】：提出了一种全固态双层芯结构色散补偿微结构光纤。该光纤以纯石英材料为基底,通过引入一种掺锗高折射率石英柱和两种掺氟/硼的低折射率石英柱,对端面折射率分布进行调节,以形成双芯结构。在对此光纤模式演化及耦合特性理论分析的基础上,利用多极法对其模式耦合位置与强度随光纤结构参数变化的关系进行了分析,对色散特性与光纤结构参数之间的变化关系进行了研究。通过优化光纤结构参数,设计出两种光纤:光纤1在1550nm处色散值达-8465ps/(nm·km),与SMF-28单模光纤熔接损耗仅为1.89dB,可对长度为其500倍的SMF-28单模光纤的色散值进行补偿;光纤2与SMF-28单模光纤的熔接损耗仅为1.41dB,可对长度为其15.5倍的SMF-28单模光纤在C波段的色散值进行补偿,最大残余色散绝对值仅为1.38ps/nm。与石英-空气孔微结构光纤相比,所提出的全固态色散补偿微结构光纤易制备且易与传统通信光纤熔接。
[Abstract]:An all-solid-state fiber with double-layer core structure for dispersion compensation is proposed. This fiber is based on pure quartz material. By introducing a germanium doped silica column with high refractive index and two low refractive index quartz columns doped with fluorine / boron, the refractive index distribution of the end face is adjusted to form a double core structure. Based on the theoretical analysis of the mode evolution and coupling characteristics of the fiber, the relationship between the mode coupling position and the strength of the fiber with the fiber structure parameters is analyzed by using the multipole method. The relationship between dispersion characteristics and fiber structure parameters is studied. By optimizing the structure parameters of the fiber, two kinds of optical fibers are designed. The dispersion value of fiber 1 reaches -8465ps/ (nm km), at 1550nm and the fusion loss of SMF-28 single-mode fiber is only 1.89dB. it can compensate the dispersion value of SMF-28 single-mode fiber whose length is 500 times. The fusion loss between fiber 2 and SMF-28 single mode fiber is only 1.41 dB, which can compensate the dispersion value of SMF-28 single mode fiber 15.5 times its length in C band. The maximum residual dispersion absolute value is only 1.38 ps.nmm. Compared with quartz air pore microstructured fiber, the proposed all-solid-state dispersion compensation micro-structure fiber is easy to fabricate and weld with traditional communication fiber.
【作者单位】：燕山大学信息科学与工程学院;河北省特种光纤与光纤传感重点实验室;
【基金】：国家自然科学基金(61405173,61405172) 河北省自然科学基金(F2014203194) 河北省教育厅科学研究计划(QN20131044) 燕山大学青年自主研究计划(13LGB017) 河北省高等学校科学技术研究项目(BJ2017108)
【分类号】：TN253

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