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Funnel-shaped waveguides for semiunidirectional optical transmission

机译：半单向光传输的漏斗形波导

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摘要

A structure comprising a funnel-shaped waveguide (FSW) is proposed to achieve semiunidirectional transmissions of light. When light is coupled from the wide end and propagates to the fine end of the FSW, the output light in the fine end will be condensed; when light is coupled in the fine end and propagates to the wide end of the FSW, the output light in the wide end will be diffused. Therefore, output lights from different ends of the FSW will have different optical intensities. Furthermore, an array of the FSWs can be used to construct a thin film, which has the semiunidirectional transmission function, as the coupled lights and output lights from the two sides of the film are different. The semiunidirectional propagation and optical imaging of the FSWs have been verified with simulations. The FSWs have compact structure and can be integrated in photonic chips and optical information processing system. The FSW film can be also used for the one-way light shielding in privacy protection.
机译：提出了一种包括漏斗形波导（FSW）的结构，以实现光的半单向传输。当光从广角端耦合并传播到FSW的细端时，细端的输出光将被会聚；当光在细端耦合并传播到FSW的宽端时，在宽端的输出光将被散射。因此，来自FSW不同端的输出光将具有不同的光强度。此外，FSW的阵列可以用于构造具有半单向透射功能的薄膜，因为来自薄膜两侧的耦合光和输出光是不同的。 FSW的半单向传播和光学成像已通过仿真验证。 FSW具有紧凑的结构，可以集成在光子芯片和光学信息处理系统中。 FSW膜还可以用于隐私保护中的单向光屏蔽。

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  • 来源
    《Optical engineering》 |2019年第6期|067101.1-067101.5|共5页
  • 作者

    Lan Zhao; Tian Xia; Shaohua Tao;

  • 作者单位

    Central South University, School of Physics and Electronics, Changsha, China;

    Central South University, School of Physics and Electronics, Changsha, China;

    Central South University, School of Physics and Electronics, Changsha, China,Central South University, Hunan Key Laboratory of Super Microstructure and Ultrafast Process, Changsha, 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

    funnel-shaped waveguide; unidirectional transmission; optical component; optical transmission;

    机译：漏斗形波导单向传输光学元件光传输;

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