In this Letter, we present to the best of our knowledge a new all-optical technique for multiple-image encryption and multiplexing, based on fractal encrypting masks. The optical architecture is a joint transform correlator. The multiplexed encrypted data are stored in a photorefractive crystal. The fractal parameters of the key can be easily tuned to lead to a multiplexing operation without cross talk effects. Experimental results that support the potential of the method are presented.
© 2012 Optical Society of America
Fourier Optics and Signal Processing
Original Manuscript: March 5, 2012
Revised Manuscript: April 27, 2012
Manuscript Accepted: May 22, 2012
Published: July 11, 2012
John F. Barrera, Myrian Tebaldi, Dafne Amaya, Walter D. Furlan, Juan A. Monsoriu, Néstor Bolognini, and Roberto Torroba, "Multiplexing of encrypted data using fractal masks," Opt. Lett. 37, 2895-2897 (2012)