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<p>Digital micromirror devices are widely used for the optical processing of graphic information, including the problem of construction of holographic display systems and adaptive formation of light beams. Modulators are also used for the creation of diffraction neuron-like systems. The demand for modulators of this type is explained by the unique, for optical systems, combination of high switching speed with high spatial resolution. We present the results of experimental investigations of an HDSLM54D67e (UPO Labs, China) digital micromirror device, which, as indicated by the manufacturer, has advanced characteristics for this class of devices. The true values of its spatial and velocity parameters are estimated by displaying binary computer-synthesized Fourier holograms and two-dimensional distributions in the form of geometric primitives. We revealed an abnormal modulation of the left half of the micromirror matrix leading to the parasitic doubling of images reconstructed from the holograms. The analysis of the causes of the indicated distortions is carried out and their relationship with specific features of the modulator control unit is revealed. The restrictions imposed on the applicability of this digital micromirror device model are determined with regard for the detected spatial limitations (the use of only a&#xa0;half of the micromirror matrix with a&#xa0;resolution of 1358 × 1600 pixels). We also formulate our proposals concerning the possibility of optimal integration of the modulator into the optical system. The application of the modulator is possible but the maximum bandwidth becomes twice smaller than the maximum theoretical value. The results of investigations can be used in subsequent optical experiments carried out with the analyzed digital micromirror device, including the task of construction of diffraction neural networks.</p>

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Application of a digital micromirror device in diffraction optical neural networks: space-time characteristics and restrictions

  • 期刊论文

  • 发表日期：

    2026年5月6日

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  • A. S. Ovchinnikov,
  • A. A. Volkov,
  • A. V. Shifrina,
  • E. K. Petrova,
  • V. A. Nebavskiy,
  • R. S. Starikov

摘要

Digital micromirror devices are widely used for the optical processing of graphic information, including the problem of construction of holographic display systems and adaptive formation of light beams. Modulators are also used for the creation of diffraction neuron-like systems. The demand for modulators of this type is explained by the unique, for optical systems, combination of high switching speed with high spatial resolution. We present the results of experimental investigations of an HDSLM54D67e (UPO Labs, China) digital micromirror device, which, as indicated by the manufacturer, has advanced characteristics for this class of devices. The true values of its spatial and velocity parameters are estimated by displaying binary computer-synthesized Fourier holograms and two-dimensional distributions in the form of geometric primitives. We revealed an abnormal modulation of the left half of the micromirror matrix leading to the parasitic doubling of images reconstructed from the holograms. The analysis of the causes of the indicated distortions is carried out and their relationship with specific features of the modulator control unit is revealed. The restrictions imposed on the applicability of this digital micromirror device model are determined with regard for the detected spatial limitations (the use of only a half of the micromirror matrix with a resolution of 1358 × 1600 pixels). We also formulate our proposals concerning the possibility of optimal integration of the modulator into the optical system. The application of the modulator is possible but the maximum bandwidth becomes twice smaller than the maximum theoretical value. The results of investigations can be used in subsequent optical experiments carried out with the analyzed digital micromirror device, including the task of construction of diffraction neural networks.