Spatial-polarization state scrambling for image encryption obtained with subwavelength gratings

Gabriel Biener, Avi Niv, Vladimir Kleiner, Erez Hasman

Research output: Contribution to specialist publicationArticle

2 Scopus citations


The demand for better and faster security devices is a result of the problems created by unauthorized users and commercial spies gaining access to communication networks. One of the processes that has been extensively investigated is the optical encryption technique. Complex polarization-state manipulation by using computer-generated space-variant subwavelength gratings was observed. It was also observed that such polarization-state manipulations inevitably lead to a phase modification of geometrical origin. Geometrical phase encryption, which is realized by using an SWG, results in a robust and stable encryption scheme.

Original languageEnglish
Number of pages1
Specialist publicationOptics and Photonics News
StatePublished - 1 Jan 2005
Externally publishedYes

ASJC Scopus subject areas

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


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