Title :
Spatial-polarization state scrambling for image encryption obtained with subwavelength gratings
Author :
Biener, Gabriel ; Niv, Avi ; Kleiner, Vladimir ; Hasman, Erez
Author_Institution :
Opt. Eng. Lab., Israel Inst. of Technol., Haifa, Israel
Abstract :
We present an optical encryption/decryption methods based on geometrical phase produced by space-variant polarization manipulation. The elements are formed by use of computer-generated space-variant subwavelength dielectric gratings.
Keywords :
cryptography; dielectric devices; diffraction gratings; image coding; light polarisation; computer-generated subwavelength grating; geometrical phase; image encryption; optical decryption method; optical encryption method; space-variant polarization manipulation; space-variant subwavelength dielectric grating; spatial-polarization state scrambling; Cryptography; Data security; Geometrical optics; Gratings; Laboratories; Optical polarization; Optical retarders; Optical surface waves; Periodic structures; Reluctance generators;
Conference_Titel :
Lasers and Electro-Optics, 2005. (CLEO). Conference on
Print_ISBN :
1-55752-795-4
DOI :
10.1109/CLEO.2005.202018
