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首页> 外文期刊>American journal of applied sciences >Design and Optimization of a 1.55 μm Waveguide Based on Silicon Planar Photonic Crystals
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Design and Optimization of a 1.55 μm Waveguide Based on Silicon Planar Photonic Crystals

机译：基于硅平面光子晶体的1.55μm波导的设计与优化

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摘要

Background: Silicon based Planar Photonic Crystals (PPC) are used for the design of a 1.55 μm waveguide. Line defects are then formed in the PPC structures, by removing rows of holes, to obtain a Planar Photonic Crystal Waveguide (PPCW). Objective: First, we varied the thickness of the Silicon slab and the pore radius in order to obtain optimum design parameters leading to a large and complete bandgap. Next, we present a study of the guided modes in the PPCW for different widths of the waveguide by removing 1, 2 and 3 rows (W1, W2 and W3) of holes from the crystal. Methodology: Band structure calculations were performed using a block-iterative frequency-domain code to find the design parameters of both triangular and square photonic crystal slab lattices of air holes. The frequency domain method for Maxwell's equations in a plane-wave basis was used to calculate the dispersion relations for the guided modes for several widths of the waveguides. Results: The structure with the larger width has a much more complicated dispersion diagram. The most important difference between the three structures (W1, W2 and W3) is that in the case of the wider waveguide, several modes exist at all bandgap frequencies. Conclusion: The structures with a single line defect (W1), there are no leaky modes in the frequency range in which modes become guided. This result indicates that this structure is most preferable.
机译：背景：硅基平面光子晶体（PPC）用于设计1.55μm波导。然后，通过去除成排的孔，在PPC结构中形成线缺陷，以获得平面光子晶体波导（PPCW）。目的：首先，我们改变硅板的厚度和孔半径，以获得最佳设计参数，从而获得较大且完整的带隙。接下来，我们通过从晶体中去除1、2和3行（W1，W2和W3）孔来研究PPCW中波导宽度不同的导模。方法：使用块迭代频域代码执行能带结构计算，以找到气孔的三角形和正方形光子晶体平板晶格的设计参数。在平面波的基础上，使用麦克斯韦方程的频域方法来计算波导在几种宽度下的导模的色散关系。结果：宽度较大的结构具有更复杂的色散图。三种结构（W1，W2和W3）之间最重要的区别是，在波导较宽的情况下，在所有带隙频率下都存在几种模式。结论：具有单线缺陷（W1）的结构在模式被引导的频率范围内没有泄漏模式。该结果表明该结构是最优选的。

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  • 来源
    《American journal of applied sciences》 |2010年第1期|P.77-80|共4页
  • 作者

    R. Bchir; A. Bardaoui; M. Machhout; R. Chtourou; H. Ezzaouia;

  • 作者单位

    Laboratory of Photovoltaic, Semiconductors and Nanostructures, Energy Center (CRTEn), Route Tourisitique Soliman, BP 95 Hammam-Lif 2050, Tunisia;

    Laboratory of Photovoltaic, Semiconductors and Nanostructures, Energy Center (CRTEn), Route Tourisitique Soliman, BP 95 Hammam-Lif 2050, Tunisia;

    Laboratory of Electronic and Microelectronic, Faculty of Sciences of Monastir, Tunisia;

    rnLaboratory of Photovoltaic, Semiconductors and Nanostructures, Energy Center (CRTEn), Route Tourisitique Soliman, BP 95 Hammam-Lif 2050, Tunisia;

    Laboratory of Photovoltaic, Semiconductors and Nanostructures, Energy Center (CRTEn), Route Tourisitique Soliman, BP 95 Hammam-Lif 2050, Tunisia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    planar photonic crystal (PPC); band structure; planar photonic crystal waveguide (PPCW); guided modes;

    机译：平面光子晶体（PPC）;带结构;平面光子晶体波导（PPCW）;引导模式;

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