Direct generation of 2D arrays of random numbers for high-fidelity optical ghost diffraction and information transmission through scattering media

Yonggui Cao, Yin Xiao, Zilan Pan, Lina Zhou, Wen Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

In this paper, we propose a new approach for high-fidelity optical ghost diffraction and information transmission through scattering media in free space using a series of 2D arrays of random numbers as information carriers. A series of 2D arrays of random numbers are directly generated to encode the ghosts, i.e., original signals or images. The generated 2D arrays of random numbers are sequentially embedded into amplitude-only spatial light modulator (SLM), and are illuminated to propagate through scattering media in free space. Experimental results show feasibility and effectiveness of the proposed method, and different types of ghosts (e.g., analog signals and grayscale images) can be encoded and retrieved with high fidelity. In addition, comparisons using different algorithm parameters and different experimental parameters (e.g., different diffraction distances and wavelengths) are conducted to analyze and illustrate performance of the proposed method. It is found that the proposed method possesses high robustness against scattering media, and can realize high-fidelity ghost diffraction and optical information transmission. The proposed high-fidelity optical ghost diffraction could open up an avenue for many applications, e.g., free-space optical transmission through scattering media. @ 2022.

Original languageEnglish
Article number107141
Pages (from-to)1-8
Number of pages8
JournalOptics and Lasers in Engineering
Volume158
DOIs
Publication statusPublished - Nov 2022

Keywords

  • 2D arrays of random numbers
  • Free-space optical data transmission
  • Ghost diffraction
  • Scattering media

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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