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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 26 — Sep. 10, 2001
  • pp: 4721–4727

Improvement in holographic storage capacity by use of double-random phase encryption

Xiaodi Tan, Osamu Matoba, Tsutomu Shimura, and Kazuo Kuroda  »View Author Affiliations


Applied Optics, Vol. 40, Issue 26, pp. 4721-4727 (2001)
http://dx.doi.org/10.1364/AO.40.004721


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Abstract

We show that a double-random encryption technique can improve the storage capacity of an angular-multiplexed holographic memory system. In the holographic memory system, input binary images are encrypted into white-noise-like images by use of two random phase masks located at the input and the Fourier planes. These encrypted images are stored as holograms in a photorefractive medium by use of angular multiplexing. All the images are encrypted by different sets of random phase masks. Even when the angle separation between adjacent images is small enough to cause cross talk between adjacent images, original binary data can be recovered with the correct phase mask; the other reconstructed images remain white-noise-like images because incorrect masks are used. Therefore the capacity of the proposed system can be larger than that of a conventional holographic memory system without the random phase encryption technique. Numerical evaluation and experimental results are presented to confirm that the capacity of the system with random phase masks is larger than that of the conventional memory system.

© 2001 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.4560) Fourier optics and signal processing : Data processing by optical means
(090.4220) Holography : Multiplex holography
(190.0190) Nonlinear optics : Nonlinear optics
(210.0210) Optical data storage : Optical data storage

History
Original Manuscript: December 13, 2000
Revised Manuscript: May 10, 2001
Published: September 10, 2001

Citation
Xiaodi Tan, Osamu Matoba, Tsutomu Shimura, and Kazuo Kuroda, "Improvement in holographic storage capacity by use of double-random phase encryption," Appl. Opt. 40, 4721-4727 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-26-4721


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References

  1. J. F. Heanue, M. C. Bashaw, L. Hesselink, “Volume holographic storage and retrieval of digital data,” Science 265, 749–752 (1994). [CrossRef] [PubMed]
  2. H. Coufal, D. Psaltis, G. Sincerbox, Holographic Data Storage (Springer-Verlag, Berlin, 2000). [CrossRef]
  3. S. S. Orlov, W. Phillips, E. Bjornson, L. Hesselink, “10 gigabit/second sustained optical data transfer rate from a holographic disk digital data storage system,” presented at the Optical Society of America Annual Meeting and Exhibit 2000 and 16th Interdisciplinary Laser Science Conference, Providence, Rhode Island, 22–26 October 2000.
  4. B. Javidi, J. L. Horner, “Optical pattern recognition for validation and security verification,” Opt. Eng. 33, 1752–1756 (1994). [CrossRef]
  5. P. Réfrégier, B. Javidi, “Optical image encryption based on input plane and Fourier plane random encoding,” Opt. Lett. 20, 767–769 (1995). [CrossRef] [PubMed]
  6. O. Matoba, B. Javidi, “Encrypted optical memory system using three-dimensional keys in the Fresnel domain,” Opt. Lett. 24, 762–764 (1999). [CrossRef]
  7. O. Matoba, B. Javidi, “Encrypted optical storage with angular multiplexing,” Appl. Opt. 38, 7288–7293 (1999). [CrossRef]
  8. X. Tan, O. Matoba, T. Shimura, K. Kuroda, B. Javidi, “Secure holographic memory that uses fully phase encryption,” Appl. Opt. 39, 6689–6694 (2000). [CrossRef]
  9. B. Javidi, G. Zhang, J. Li, “Encrypted optical memory using double-random phase encoding,” Appl. Opt. 36, 1054–1058 (1997). [CrossRef] [PubMed]
  10. P. J. van Heerden, “Theory of optical information storage in solids,” Appl. Opt. 2, 393–400 (1963). [CrossRef]
  11. B. Javidi, N. Towghi, N. Maghzi, S. Verrall, “Error-reduction techniques and error analysis for fully phase and amplitude-based encryption,” Appl. Opt. 39, 4117–4130 (2000). [CrossRef]
  12. N. Towghi, B. Javidi, Z. Luo, “Fully phase encrypted image processor,” J. Opt. Soc. Am. A 16, 1915–1927 (1999). [CrossRef]
  13. Q. Gao, R. Kostuk, “Improvement to holographic digital data-storage systems with random and pseudorandom phase masks,” Appl. Opt. 36, 4853–4861 (1997). [CrossRef] [PubMed]
  14. J. Yang, L. M. Bernardo, Y-S. Bae, “Improving holographic data storage by use of an optimized phase mask,” Appl. Opt. 38, 5641–5645 (1999). [CrossRef]
  15. H. W. Kogelnik, “Coupled wave theory for think hologram gratings,” Bell Syst. Tech. J. 48, 2909–2947 (1969). [CrossRef]
  16. C. Gu, J. Hong, I. McMichael, R. Saxena, F. H. Mok, “Cross-talk-limited storage capacity of volume holographic memory,” J. Opt. Soc. Am. A 9, 1978–1983 (1992). [CrossRef]
  17. Y. Taketomi, J. E. Ford, H. Sasaki, J. Ma, Y. Fainman, S. H. Lee, “Incremental recording for photorefractive hologram multiplexing,” Opt. Lett. 16, 1774–1776 (1991). [CrossRef] [PubMed]

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