OSA's Digital Library

Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 17 — Sep. 1, 2006
  • pp: 2562–2564

Optical encryption using phase-shifting interferometry in a joint transform correlator

Cecilia La Mela and Claudio Iemmi  »View Author Affiliations


Optics Letters, Vol. 31, Issue 17, pp. 2562-2564 (2006)
http://dx.doi.org/10.1364/OL.31.002562


View Full Text Article

Enhanced HTML    Acrobat PDF (213 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We propose an optical encryption technique where the encrypted field and the decrypting key are obtained by three-step phase-shifting interferometry and registered as digital Fresnel holograms in a joint transform correlator architecture. Decryption can be achieved by digital or optical means. The technique allows the complete process to be achieved at high speed and data to be transfered via digital communication channels. Experimental implementation is performed in a system based on a programmable liquid-crystal TV display working in pure phase mode to represent the input data and to introduce the required phase shifts. A CCD is used to register the output data.

© 2006 Optical Society of America

OCIS Codes
(070.4560) Fourier optics and signal processing : Data processing by optical means
(090.2880) Holography : Holographic interferometry
(100.3010) Image processing : Image reconstruction techniques
(100.4550) Image processing : Correlators
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Fourier Optics and Optical Signal Processing

History
Original Manuscript: April 3, 2006
Revised Manuscript: May 16, 2006
Manuscript Accepted: May 23, 2006
Published: August 9, 2006

Citation
Cecilia La Mela and Claudio Iemmi, "Optical encryption using phase-shifting interferometry in a joint transform correlator," Opt. Lett. 31, 2562-2564 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-17-2562


Sort:  Author  |  Year  |  Journal  |  Reset  

References

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Figures

Fig. 1 Fig. 2 Fig. 3
 
Fig. 4
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited