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Multidimensional signal processing in spatial-spectral holographic media.

机译:空间光谱全息媒体中的多维信号处理。

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摘要

In this thesis I present the analyses, simulations and demonstrations of a number of novel optical signal processing systems, which are designed to explore the large bandwidths (10's--100's of GHz), time-bandwidth products (105 and greater) and massive spatial parallelism that spatial-spectral holography and photon-echo (PE) processing can provide. The systems investigated include RF spectrum analyzers, a time-integrating correlator, an RF-array multibeam imager, and a high-bandwidth LIDAR range-Doppler processor, all of which were built around a Tm3+:YAG crystal as the spatial-spectral holographic (SSH) medium. The time-integrating correlator (TIC) is the first SSH experiment that illustrates spatial coherence across parallel channels of PE processors. In this experiment, ∼150 SSH gratings with linearly increasing time-delays are recorded in the SSH, which, when read out, result in the scanned output required for the TIC. In the high-bandwidth RF spectrum analyzer; the spectral components from an RF signal are modulated onto an optical carrier and burned into the spectrally selective absorption band of the SSH. This altered absorption profile is then recovered by a frequency-swept source and a high dynamic range, low bandwidth detector. This is the first experimental SSH system to process RF signals with bandwidths in excess of 10 GHz, and was enabled by a novel linearized readout technique. In the LIDAR experiment, the Doppler and range information of targets is encoded in the position and spectral period of sinusoidal SSH gratings. These gratings (spanning ∼16 GHz) are snapped out with the linearized readout technique and post processed to recover the Doppler and range of the targets. The required experimental infrastructure and the spectrally-linearized chirped readout laser are discussed in detail.
机译:在本文中,我将介绍许多新颖的光信号处理系统的分析,仿真和演示,这些系统旨在探索大带宽(GHz的10's--100's),时间带宽乘积(105及更高)和巨大的空间空间光谱全息术和光子回波(PE)处理可以提供的并行性。所研究的系统包括RF频谱分析仪,时间积分相关器,RF阵列多光束成像仪和高带宽LIDAR范围多普勒处理器,所有这些系统均围绕Tm3 +:YAG晶体作为空间光谱全息图( SSH)介质。时间积分相关器(TIC)是第一个SSH实验,它说明了PE处理器并行通道之间的空间一致性。在该实验中,在SSH中记录了约150个具有线性增加的时延的SSH光栅,这些光栅在读出时会产生TIC所需的扫描输出。在高带宽射频频谱分析仪中; RF信号的光谱成分被调制到光载波上,并被烧入SSH的光谱选择性吸收带中。然后,通过频率扫描源和高动态范围,低带宽检测器来恢复这种变化的吸收曲线。这是第一个实验性SSH系统,可处理带宽超过10 GHz的RF信号,并通过一种新颖的线性读出技术实现。在LIDAR实验中,目标的多普勒和距离信息被编码在正弦SSH光栅的位置和光谱周期中。这些光栅(跨度约为16 GHz)通过线性读出技术被捕捉出来,并经过后处理以恢复多普勒和目标范围。详细讨论了所需的实验基础设施和光谱线性化chi读出激光器。

著录项

  • 作者

    Schlottau, Friso.;

  • 作者单位

    University of Colorado at Boulder.;

  • 授予单位 University of Colorado at Boulder.;
  • 学科 Physics Optics.; Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2006
  • 页码 240 p.
  • 总页数 240
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光学;无线电电子学、电信技术;
  • 关键词

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