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Passive components for dense optical integration based on high index-contrast

机译:基于高折射率对比度的密集光学集成的无源元件

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摘要

This work presents a theoretical and numerical investigation of high index-contrast passive components that can serve as building blocks at the end-pointsand nodes of WDM communications systems. The main characteristic of these structures is their miniature size (on the order of the optical wavelength), and their low radiation loss due to the strong light confinement in high index-contrast systems. Thus large scale, high density optical integration may be possible with the associated advantages of increased functionality, compactness and low-cost. Novel devices for filtering, optical interconnections and coupling to fibers are presented, specifically: a class of resonant add/drop filters that rely on symmetry and degeneracy of modes, low-loss right-angle bends, splitters, crossings based on transmission cavities, and fiber-chip couplers based on cascades of resonators or lensing mechanisms. Their operating principles are explained and an approximate analysis is obtained by analytical methods such as coupled-mode theory and gaussian/ray optics. For accurate analysis and optimized design, extensive numerical simulations are performed using the Finite Difference Time Domain method. The numerical results are in good agreement with the experimental data obtained for bends that were farbricated and tested at MIT. Issues that remain to be addressed for this technology to be viable and possible future directions are also discussed.
机译:这项工作提出了对高折射率对比的无源组件的理论和数值研究,这些组件可以作为WDM通信系统的端点和节点的构建块。这些结构的主要特征是它们的微型尺寸(在光学波长的数量级),以及由于在高折射率对比系统中的强光限制而导致的低辐射损耗。因此,大规模,高密度的光学集成可能具有增加的功能性,紧凑性和低成本的相关优点。提出了用于滤波,光学互连和耦合到光纤的新型设备,特别是:一类基于模式的对称性和简并性,低损耗直角弯曲,分离器,基于传输腔的交叉的谐振分插滤波器,以及基于谐振器或透镜机构级联的光纤芯片耦合器。解释了它们的工作原理,并通过分析方法(例如耦合模式理论和高斯/射线光学)获得了近似分析。为了进行准确的分析和优化的设计,使用时域有限差分法进行了广泛的数值模拟。数值结果与在麻省理工学院进行分叉和测试的弯头获得的实验数据非常吻合。还讨论了该技术可行并仍需解决的问题,以及可能的未来方向。

著录项

  • 作者

    Manolatou Christina;

  • 作者单位
  • 年度 2001
  • 总页数
  • 原文格式 PDF
  • 正文语种 en_US
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