0000000000981389

AUTHOR

Myrian Tebaldi

showing 2 related works from this author

Optical-data storage-readout technique based on fractal encrypting masks

2009

We propose the use of fractal structured diffractive masks as keys in secure storage-readout systems. A joint transform correlator based on a photorefractive crystal in the Fourier domain is implemented to perform encryption and decryption. We discuss the advantages of encrypting information using this kind of deterministic keys in comparison to conventional random phase masks. Preliminary experimental results are presented to demonstrate the effectiveness of the proposed system.

3D optical data storageComputer sciencebusiness.industryOptical storageDiffraction efficiencyEncryptionAtomic and Molecular Physics and OpticsFractalOpticsEncoding (memory)Computer data storagebusinessJoint (audio engineering)Computer Science::Cryptography and SecurityOptics Letters
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Parallel fractional correlation: an optical implementation

2008

An optical setup to obtain all the fractional correlations of a one-dimensional input in a single display is implemented. The system works as a multichannel parallel correlator for a continuous set of fractional orders and presents a variable shift variance. Some experimental results together with computer simulations are performed to illustrate the performance of our proposal.

Computer simulationbusiness.industryComputer scienceMaterials Science (miscellaneous)Industrial and Manufacturing EngineeringPtychographySet (abstract data type)symbols.namesakeFourier transformOpticssymbolsBusiness and International ManagementOptical filterbusinessImage resolutionFresnel diffractionVariable (mathematics)Applied Optics
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