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Study on ultralow bending loss of bend-insensitive single mode optical fiber

机译：对弯曲不敏感的单模光纤的超低弯曲损耗的研究

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摘要

A novel bend-insensitive single mode fiber is proposed in this paper. A finite element method with a perfectly matched layer boundary is used to analyze characteristics of the mode field distribution, effective area and bending loss. To achieve the proposed fiber with a low bending loss, a symmetrical distribution of air holes on a doped trench is designed. The effects of structural parameters on the bending loss and effective area are discussed. The numerical results show that this structure can achieve a low bending loss and effective model area with smaller bend radius at a wavelength of 1550 nm. The bending loss is only 2.13 x 10(-5) dB/m and the mode field diameter (MFD) is 8.71 mu m, which can provide a good match with the single mode fiber (SMF). The simulation results show that the existence of air holes in the trenched layer can exist minimum point of bending loss with increasing the values of c, which is different from previous studies. Compared with a single mode fiber-28 (SMF-28) and a trench-assistant fiber (TAP), this structure still has an ultralow bending loss and a smaller effective area with a low-bend radius of 3 mm at a wavelength of 1550 nm. The proposed fiber may be preferable for optical connection.
机译：本文提出了一种新型的弯曲不敏感的单模光纤。使用层边界完全匹配的有限元方法来分析模场分布，有效面积和弯曲损耗的特征。为了实现所提出的具有低弯曲损耗的光纤，设计了在掺杂沟槽上的气孔对称分布。讨论了结构参数对弯曲损耗和有效面积的影响。数值结果表明，该结构可以在1550 nm波长处实现低弯曲损耗和较小弯曲半径的有效模型区域。弯曲损耗仅为2.13 x 10（-5）dB / m，模场直径（MFD）为8.71μm，可以与单模光纤（SMF）很好地匹配。仿真结果表明，随着c值的增加，沟槽层中存在气孔可以存在最小的弯曲损耗点，这与以往的研究有所不同。与单模光纤28（SMF-28）和沟槽辅助光纤（TAP）相比，该结构仍具有超低的弯曲损耗和更小的有效面积，在1550波长处的低弯曲半径为3 mm纳米提出的光纤对于光学连接可能是优选的。

著录项

  • 来源
    《Optical fiber technology》 |2019年第7期|225-232|共8页
  • 作者

    She Yu-Lai; Zhou De-Jian; Chen Xiao-Yong; Xia An-Si;

  • 作者单位

    Guilin Univ Elect Technol, Sch Mech & Elect Engn, Guilin 541004, Peoples R China;

    Guilin Univ Elect Technol, Sch Mech & Elect Engn, Guilin 541004, Peoples R China;

    Guilin Univ Elect Technol, Sch Mech & Elect Engn, Guilin 541004, Peoples R China|Guangxi Key Lab Mfg Syst & Adv Mfg Technol, Guilin 541004, Peoples R China;

    Guilin Univ Elect Technol, Sch Mech & Elect Engn, Guilin 541004, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bend-insensitive single mode optical fiber; Bending loss; Effective area; Finite element method (FEM);

    机译：弯曲不敏感的单模光纤;弯曲损耗;有效面积;有限元法（FEM）;

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