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Optical operations based on speckle modulation by using a photorefractive crystal

Authors
Journal
Optics Communications
0030-4018
Publisher
Elsevier
Publication Date
Volume
168
Identifiers
DOI: 10.1016/s0030-4018(99)00304-1
Keywords
  • Optical Image Processing
  • Multiplexing
  • Speckle
  • Photorefractive Crystal

Abstract

Abstract An image multiplexing technique, based on the internal modulation of speckle grains by using different multiple aperture pupils during exposure, is proposed. A BSO crystal is employed as the recording medium. A theoretical analysis of the multiplexing procedures is outlined. Selective retrieving of each encoded image and the superposition of several images is discussed. Experimental results in connection with image binary operations are presented.

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