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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 1 — Jan. 1, 2014
  • pp: 1–8

Orthogonal reference pattern multiplexing for collinear holographic data storage

Liangcai Cao, Jinqiu Liu, Jianhua Li, Qingsheng He, and Guofan Jin  »View Author Affiliations


Applied Optics, Vol. 53, Issue 1, pp. 1-8 (2014)
http://dx.doi.org/10.1364/AO.53.000001


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Abstract

An orthogonal reference pattern multiplexing (ORPM) method for collinear holographic data storage (CHDS) is investigated to increase the data storage density and realize parallel optical image superimposition. Holograms are multiplexed in the same volume of the recording medium with multiple orthogonal reference patterns (RPs). The physical principle of this method is analyzed based on scalar diffraction theory. The orthogonal condition of the RPs is derived in order to suppress the interpage cross talk. The parameters of the radial-line RP have significant influence on the signal-to-noise ratio (SNR) of the reconstructed data page. They are optimized to reduce the intrapage cross talk. With a random binary phase mask (RBPM) located closely before the spatial light modulator, SNR of the reconstructed data page is seven times the SNR without the RBPM. Three data pages are multiplexed in the same volume of the medium using the ORPM method. The reconstructed data pages for the CHDS system show the effectiveness of the RBPM in suppressing the intrapage and interpage cross talk.

© 2013 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(090.4220) Holography : Multiplex holography
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(210.2860) Optical data storage : Holographic and volume memories

ToC Category:
Holography

History
Original Manuscript: October 4, 2013
Manuscript Accepted: November 23, 2013
Published: December 23, 2013

Citation
Liangcai Cao, Jinqiu Liu, Jianhua Li, Qingsheng He, and Guofan Jin, "Orthogonal reference pattern multiplexing for collinear holographic data storage," Appl. Opt. 53, 1-8 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-1-1

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