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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 11 — Jun. 1, 2008
  • pp: 1252–1254

Overloaded phase-code multiplexing for volume holographic storage

Gernot Berger, Mathias Dietz, and Cornelia Denz  »View Author Affiliations

Optics Letters, Vol. 33, Issue 11, pp. 1252-1254 (2008)

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Overloaded phase codes for volume holographic data storage are introduced. In contrast to any previous phase-code design, overloaded phase codes enable multiplexing of a number of data pages that exceeds the number of utilized reference beams. In this way the achievable data capacity can be augmented. Overloaded codes are generated by extending multilevel phase codes based on the discrete Fourier transform. We demonstrate multiplexing of 70 analog pages by means of 64 reference beams. The analysis of reconstructed digital data pages suggests that a capacity gain of up to 15% is reasonable.

© 2008 Optical Society of America

OCIS Codes
(210.2860) Optical data storage : Holographic and volume memories
(210.1635) Optical data storage : Coding for optical storage

ToC Category:
Optical Data Storage

Original Manuscript: March 19, 2008
Revised Manuscript: April 25, 2008
Manuscript Accepted: April 28, 2008
Published: May 30, 2008

Gernot Berger, Mathias Dietz, and Cornelia Denz, "Overloaded phase-code multiplexing for volume holographic storage," Opt. Lett. 33, 1252-1254 (2008)

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