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Propagation of fundamental mode in regularly bending multi-mode waveguides

机译：基本模式在定期弯曲多模波导中的传播

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摘要

Transmission of the fundamental mode in multi-mode waveguides is an effective scheme for a silicon-based platform to reduce scattering loss. However, the application of the scheme is usually limited to straight waveguides and restricted in multi-mode bending waveguides. This is because the fundamental mode of a straight waveguide is seriously disordered after passing the bend. In this work, we have presented a "matched bending radius" approach, by which an ultra-low loss and negligible modal disorder have been demonstrated in the Si and Si_3N_4 multi-mode waveguides. The estimated TE_0 mode transmission factor is almost 0 dB at the matched bending radius, indicating that the fundamental mode can be re-generated after passing the multi-mode bending waveguide. The proposed approach will contribute to applying the low loss scheme in large-scale photonic integrated circuits.
机译：多模波导中的基本模式传输是基于硅的平台的有效方案，以减少散射损耗。 然而，该方案的应用通常限于直波导并限制在多模弯曲波导中。 这是因为在通过弯曲后，直波导的基本模式严重紊乱。 在这项工作中，我们提出了一种“匹配的弯曲半径”方法，通过该方法，在Si和Si_3N_4多模波导中已经证明了超低损失和可忽略的模态障碍。 估计的TE_0模式传输因子在匹配的弯曲半径处几乎为0 dB，表明在通过多模式弯曲波导之后可以重新生成基本模式。 该拟议的方法将有助于在大型光子集成电路中应用低损耗方案。

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  • 来源
    《Optical and quantum electronics》 |2021年第7期|408.1-408.7|共7页
  • 作者

    Hongyan Yu; Xinyu Sun; Dasai Ban; Feng Qiu;

  • 作者单位

    Zhejiang University Hangzhou 310027 Zhejiang Province China Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China Institute of Advanced Technology Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China;

    Zhejiang University Hangzhou 310027 Zhejiang Province China Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China Institute of Advanced Technology Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China;

    Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China Institute of Advanced Technology Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China;

    Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering Westlake University 18 Shilongshan Road Hangzhou 310024 Zhejiang Province China Institute of Advanced Technology Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou 310024 Zhejiang Province 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

    Multi-mode waveguides; Bending waveguides; Photonic integrated circuits;

    机译：多模波导;弯曲波导;光子集成电路;

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