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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 1 — Jan. 1, 2009
  • pp: 55–63

Improved data search by zero-order (dc) peak filtering in a defocused volume holographic content-addressable memory

Bhargab Das, Joby Joseph, and Kehar Singh  »View Author Affiliations


Applied Optics, Vol. 48, Issue 1, pp. 55-63 (2009)
http://dx.doi.org/10.1364/AO.48.000055


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Abstract

Defocusing the recording material away from the Fourier plane is necessary to reduce the strong dc component and produce a more homogeneous object beam distribution in the hologram plane in volume holographic digital data-storage systems with amplitude-modulated data pages. However, content- addressable searching with defocused recording results in higher cross-correlation peak intensities. We present a method for performing a faithful content-addressable search in a defocused volume holographic data-storage system. A new dc-filtered content-addressable search method for defocused volume holographic data-storage systems with binary data pages is demonstrated. Both simulation and experimental results are presented. The experimental results show good discrimination capability and confirm the feasibility of the proposed technique.

© 2008 Optical Society of America

OCIS Codes
(090.4220) Holography : Multiplex holography
(200.4540) Optics in computing : Optical content addressable memory processors
(210.2860) Optical data storage : Holographic and volume memories

ToC Category:
Optical Data Storage

History
Original Manuscript: July 3, 2008
Revised Manuscript: October 26, 2008
Manuscript Accepted: November 11, 2008
Published: December 17, 2008

Citation
Bhargab Das, Joby Joseph, and Kehar Singh, "Improved data search by zero-order (dc) peak filtering in a defocused volume holographic content-addressable memory," Appl. Opt. 48, 55-63 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-1-55


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References

  1. H. J. Coufal, D. Psaltis, and G. T. Sincerbox, eds., Holographic Data Storage (Springer-Verlag, 2000).
  2. S. S. Orlov, W. Phillips, E. Bjornson, Y. Takashima, P. Sundaram, L. Hesselink, R. Okas, D. Kwan, and R. Snyder, “High-transfer-rate high-capacity holographic disk data-storage system,” Appl. Opt. 43, 4902-4914 (2004). [CrossRef] [PubMed]
  3. G. W. Burr, S. Kobras, H. Hanssen, and H. Coufal, “Content-addressable data storage by use of volume holograms,” Appl. Opt. 38, 6779-6784 (1999). [CrossRef]
  4. F. Grawert, G. W. Burr, S. Kobras, H. Hanssen, M. Riedel, C. M. Jefferson, M. Jurich, and H. Coufal, “Content-addressable holographic databases,” Proc. SPIE 4109, 177-188 (2000). [CrossRef]
  5. G. A. Betzos, A. Lasisné, and P. A. Mitkas, “Improved associative recall of binary data in volume holographic memories,” Opt. Commun. 171, 37-44 (1999). [CrossRef]
  6. Y. Liao, Y. Guo, L. Cao, X. Ma, Q. He, and G. Jin, “Experiment on parallel correlated recognition of 2030 human faces based on speckle modulation,” Opt. Express 12, 4047-4052 (2004). [CrossRef] [PubMed]
  7. R. K. Kostuk, M. P. Bernal Artajona, and Q. Gao, “Beam conditioning techniques for holographic recording systems,” in Holographic Data Storage, H. J. Coufal, D. Psaltis, and G. T. Sincerbox, eds. (Springer-Verlag, 2000), pp. 259-269.
  8. J. Joseph and D. A. Waldman, “Homogenized Fourier transform holographic data storage using phase spatial light modulators and methods for recovery of data from the phase image,” Appl. Opt. 45, 6374-6380 (2006). [CrossRef] [PubMed]
  9. L. Domjan, P. Koppa, G. Szarvas, and J. Remenyi, “Ternary phase-amplitude modulation with twisted nematic liquid crystal displays for Fourier-plane homogenization in holographic data storage,” Optik (Jena) 113, 382-390 (2002). [CrossRef]
  10. B. Das, J. Joseph, and K. Singh, “Performance analysis of content-addressable search and bit-error rate characteristics of a defocused volume holographic data storage system,” Appl. Opt. 46, 5461-5470 (2007). [CrossRef] [PubMed]
  11. B. Das, J. Joseph, and K. Singh, “Material saturation in photopolymer holographic data recording and its effects on bit-error-rate and content-addressable search,” Opt. Commun. 282, 177-184 (2009).
  12. B. M. King and M. A. Neifeld, “Sparse modulation coding for increased capacity in volume holographic storage,” Appl. Opt. 39, 6681-6687 (2000). [CrossRef]
  13. B. M. King, G. W. Burr, and M. A. Neifeld, “Experimental demonstration of gray-scale sparse modulation codes in volume holographic storage,” Appl. Opt. 42, 2546-2559 (2003). [CrossRef] [PubMed]
  14. B. J. Goertzen and P. A. Mitkas, “Volume holographic storage for large relational databases,” Opt. Eng. 35, 1847-1853 (1996). [CrossRef]
  15. D. A. Waldman and J. Joseph, “Method and apparatus for phase-encoded homogenized Fourier transform holographic data storage and recovery,” U.S. patent 7,411,708 (12 August 2008).
  16. J. W. Goodman, Introduction to Fourier Optics, 2nd ed. (McGraw-Hill, 1996).
  17. M. J. O'Callaghan, “Sorting through the lore of phase mask options: performance measures and practical commercial designs,” Proc. SPIE 5362, 150-159 (2004). [CrossRef]
  18. J.-S. Jang and D.-H. Shin, “Optical representation of binary data based on both intensity and phase modulation with a twisted-nematic-liquid-crystal display for holographic digital data storage,” Opt. Lett. 26, 1797-1799 (2001). [CrossRef]
  19. R. John, J. Joseph, and K. Singh, “Content-addressable holographic digital data storage based on hybrid ternary modulation with a twisted-nematic liquid-crystal spatial light modulator,” Opt. Rev. 12, 155-160 (2005). [CrossRef]
  20. R. John, J. Joseph, and K. Singh, “An input-data page modulation scheme for content-addressable holographic digital data storage,” Opt. Commun. 249, 387-395 (2005). [CrossRef]

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