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Optical Performance Study of Duplex Y-branch Coupler with Different Structures

机译：不同结构的双Y型分支耦合器的光学性能研究

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摘要

As the increase of environment and conservation consciousness in recent years, green-lighting concept begins attracting much attention of the people in our country; particularly, the exploration of daylight lighting system is an obvious example. However, in this nature-light lighting system, versatile optical couplers are required to guide and dissipate sunlight into different indoor spaces to produce assistant illumination, and their coupling efficiencies directly affect the whole efficiency of the lighting system. Thus, they play an important role in the daylight lighting system. To obtain high efficient optical couplers, this thesis, other than investigating various used Y-branch couplers, proposes another new type of coupler, which has a positive- or negative-arc Y-branch structure to split a light-beam into two beams or to combine two light-beams into one beam with high efficient light output. From optical simulation results, it can be seen that the output efficiency of this symmetrical Y-branch coupler with positive or negative arc can reach above 90%, no matter it is used as a combiner or splitter. Furthermore, this thesis also goes through an investigation of the Y-branch output field distribution and an improved arc design; the coupling efficiency between the coupler and an externally connected optical fiber can be promoted.
机译：近年来，随着环境和保护意识的增强，绿色照明的概念开始引起我国人民的广泛关注。特别是，日光照明系统的探索就是一个明显的例子。然而，在这种自然光照明系统中，需要通用的光耦合器将阳光引导和消散到不同的室内空间中以产生辅助照明，并且它们的耦合效率直接影响照明系统的整体效率。因此，它们在日光照明系统中起着重要的作用。为了获得高效的光耦合器，除了研究各种二手的Y分支耦合器之外，本论文还提出了另一种新型的耦合器，该耦合器具有正弧形或负弧形Y分支结构，可将光束分成两束或两束。将两个光束组合成一个光束，并具有高效的光输出。从光学仿真结果可以看出，这种对称的带有正或负电弧的Y分支耦合器的输出效率都可以达到90％以上，无论它用作组合器还是分离器。此外，本文还研究了Y分支输出场的分布和改进的电弧设计。可以提高耦合器与外部连接的光纤之间的耦合效率。

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  • 来源
    《Optical design and testing VI》|2014年|92720Y.1-92720Y.8|共8页
  • 会议地点 Beijing(CN)
  • 作者

    Kuang-Lung Huang; Te-Shu Liu; Jei Ding; Jin-Jia Chen;

  • 作者单位

    Department of Materials Science and Energy Engineering, Mingdao University, Taiwan;

    Department of Electrical Engineering, National Changhua University of Education, Taiwan;

    Department of Electrical Engineering, National Changhua University of Education, Taiwan;

    Department of Electrical Engineering, National Changhua University of Education, Taiwan;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Light coupler; Y-branch structure; beam-splitter; beam-combiner;

    机译：光耦合器Y分支结构；分束器;光束合成器;

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