Artículo
Experimental opto-digital processing of multiple data via modulation, packaging and encryption
Fecha de publicación:
03/2014
Editorial:
IOP Publishing
Revista:
Journal of Optics
ISSN:
2040-8978
e-ISSN:
2040-8986
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A new opto-digital protocol to handle multiple data in an efficient and secure way is proposed and experimentally demonstrated. In this method, the optical processor is a 2f system with a ground glass located in its input plane. The 2f system is placed in one arm of a Mach–Zehnder interferometer. The optically processed data are holographically stored and then filtered, theta modulated and multiplexed to obtain a single package containing all processed data. During the filtering procedure, the non-relevant information contained in the holograms is eliminated. Otherwise, these non-relevant data will introduce noise over the output plane affecting the retrieved objects. In this case, the theta modulation process performed with a grating allows recovering all data without superposition. In order to get the encrypted package a second random phase masks multiplies the package. The recovering procedure consists in multiplying the encrypted package by the complex conjugate of the random phase mask, an after a Fourier transform operation all data are retrieved. In this way, an authorized user recovers all data with a single operation, in the same plane and at the same time without noise or superposition. Experimental results demonstrate the validity and applicability of the proposal.
Palabras clave:
Image Processing
,
Optical Packaging
,
Theta Modulation
,
Encryption
Archivos asociados
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Identificadores
Colecciones
Articulos(CIOP)
Articulos de CENTRO DE INVEST.OPTICAS (I)
Articulos de CENTRO DE INVEST.OPTICAS (I)
Citación
Trejo, Sorayda; Barrera, John Fredy; Tebaldi, Myriam Cristina; Torroba, Roberto Daniel; Experimental opto-digital processing of multiple data via modulation, packaging and encryption; IOP Publishing; Journal of Optics; 16; 5; 3-2014; 55402-55410
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