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首页> 外文期刊>Optical Engineering >Design of a transverse electric-pass/transverse magnetic-splitting three-guide directional coupler composed of two slot waveguides and one silicon wire
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Design of a transverse electric-pass/transverse magnetic-splitting three-guide directional coupler composed of two slot waveguides and one silicon wire

机译：Design of a transverse electric-pass/transverse magnetic-splitting three-guide directional coupler composed of two slot waveguides and one silicon wire

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摘要

A three-guide directional coupler composed of two slot waveguides and one silicon wire with a function of transverse electric (TE)-pass/transverse magnetic (TM)-splitting is proposed and designed using a modified 3-D full-vectorial beam propagation method. In our design, quasi-TE modes fed in the middle silicon wire pass through without coupling, whereas quasi-TM modes fed in the same channel are evenly split into the outer slot waveguides. With properly chosen parameters, a TE-pass/TM-splitting directional coupler with a length of 22.6 μm, including the straight coupling region and the S-bends, is achieved with the crosstalk of -31 and -35 dB for quasi-TE and quasi-TM modes, respectively. In addition, the tolerances to the structural parameters and operating wavelength are also investigated in detail.

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  • 来源
    《Optical Engineering》 |2012年第9期|094602-1-094602-6|共6页
  • 作者

    Jiayuan Wang; Jinbiao Xiao; Xiaohan Sun;

  • 作者单位

    Southeast University, Laboratory of Photonics and Optical Communications, School of Electronic Science and Technology, Nanjing 210096, 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 英语
  • 中图分类 计量学;
  • 关键词

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