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首页> 外文学位 >Design and demonstration of a novel optical true time delay technique using polynomial cells based on white cells.
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Design and demonstration of a novel optical true time delay technique using polynomial cells based on white cells.

机译：一种基于白细胞的多项式细胞的新型光学实时延时技术的设计和演示。

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摘要

This dissertation presents the design of an octic-style optical true-time delay cell and a proof-of-concept experimental demonstration of a subset of it. The octic cell is a "polynomial" cell, which is one of two classes of true time delay cells being designed by our group. The octic cell is designed to produce a maximum of 6399 sequential delays (or more than 12 bits of delay) in 17 bounces for a given light beam through the apparatus with a unit delay of 3ps. The largest delay in the octic cell is 19.197 ns. We use both glass blocks for small delays and lens trains for the longer delays. The octic cell is designed to use a micro-electrical mechanical systems or MEMS device, which consists of tip/tilt micromirror array to direct the light beams in various directions on each bounce. White cells of different lengths are set up in each of these different directions. By forcing the light to travel the different lengths, we are able to obtain different delays.; For our proof-of-concept experiment, we set up only six of the ten arms of the octic cell (arms C, D, J and K and the null arms A and B) as a planar quartic cell.; With the use of a CalientRTM MEMS device, we were able to demonstrate switching of light between the different arms by just tipping the right micro mirrors. The experimental results also proved that it is possible to use glass blocks as delays elements for short delays with lens trains for longer delays. We were able to measure delays with an accuracy of 0.5ps with a E8320B Network Analyzer.; In this dissertation, the architecture of the cell is described along with a discussion of how to select the mirror progressions, how the optics were chosen including a detailed description of the design technique used to determine the focal lengths, positions and diameters of the optics of the cell. A detailed step-by-step description of the alignment procedure used in the setting up of the quartic cell has also been described in the dissertation. Finally, a simulation of the quartic cell in OSLO showed that the quartic cell using a single field lens tends to suffer from spherical aberrations. Further simulations showed that by using separate field lenses we are able to rid the cell of spherical aberrations.
机译：本文提出了一种椭圆型光学实时延迟盒的设计及其子集的概念验证实验。 octic单元是一个“多项式”单元，它是我们小组设计的两类真实时间延迟单元之一。对于通过设备的给定光束，octic电池被设计为以17个反弹产生最多6399个连续延迟（或超过12位延迟），单位延迟为3ps。卵细胞的最大延迟为19.197 ns。我们将玻璃块用于较小的延迟，将透镜架用于较长的延迟。 octic电池被设计为使用微电子机械系统或MEMS设备，该设备由尖端/倾斜微镜阵列组成，以在每次反射时将光束沿各个方向引导。在这些不同方向的每个方向上设置了不同长度的白电池。通过强迫光线传播不同的长度，我们可以获得不同的延迟。对于我们的概念验证实验，我们仅将octic cell的十个臂中的六个臂（C，D，J和K臂以及无效的A和B臂）设置为平面四边形单元。通过使用CalientRTM MEMS器件，我们只需倾斜合适的微镜就可以演示不同臂之间的光切换。实验结果还证明，可以将玻璃块用作短延迟的延迟元件，而将透镜列用于较长的延迟。使用E8320B网络分析仪，我们能够以0.5ps的精度测量延迟。在本文中，将描述该单元的结构，并讨论如何选择反射镜级数，如何选择光学系统，以及对用于确定光学系统的焦距，位置和直径的设计技术的详细说明。细胞。论文中还详细描述了用于建立四元细胞的对准程序的详细步骤。最后，在OSLO中对四方晶胞进行仿真显示，使用单场镜的四方晶胞容易遭受球差的影响。进一步的仿真表明，通过使用单独的场镜，我们能够消除球面像差的像元。

著录项

  • 作者

    Mital, Rashmi.;

  • 作者单位

    The Ohio State University.;

  • 授予单位 The Ohio State University.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 208 p.
  • 总页数 208
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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