Abstract

We propose and analyze a novel recording and reading scheme for cross-talk noise reduction in volume holographic data storage. Each hologram is recorded with a slightly focused Gaussian reference beam and can be read out by use of the same Gaussian reference. The waist of the reference Gaussian profile can be adjusted based on the required signal–noise ratio and the storage density. Simulation results show the reduced cross-talk noise yielded by the proposed scheme.

© 1997 Optical Society of America

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References

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  1. C. Gu and F. Dai, Opt. Lett. 20, 2336 (1995).
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1997 (1)

F. Dai and C. Gu, Opt. Eng. 36, 1691 (1997).
[CrossRef]

1996 (3)

1995 (1)

1992 (2)

Barbastathis, G.

Chang, T. Y.

Christian, W.

Dai, F.

F. Dai and C. Gu, Opt. Eng. 36, 1691 (1997).
[CrossRef]

C. Gu and F. Dai, Opt. Lett. 20, 2336 (1995).
[CrossRef]

Gu, C.

Hong, J.

Levene, M.

Leyva, V.

McDonald, M.

McMichael, I.

Mok, F.

Neifeld, A.

Pletcher, D.

Psaltis, D.

Rakulie, S. G.

Saxena, R.

Yariv, A.

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Figures (3)

Fig. 1
Fig. 1

Reference amplitude profile at the center of the recording medium.

Fig. 2
Fig. 2

Selectivity response versus the normalized reading reference position t/λ/yi/f. X2=Y2=0, Ym=0, M=1, θ=90°. Reading and writing are done with the same Gaussian references.

Fig. 3
Fig. 3

Interpage cross-talk noise-to-signal ratio (NSR) versus the total number of stored pages for different recording references. 2M+1, i=0.9M, Y2=0.1, λ/t=10-4, and Ym=Dλ/t. The holograms are read out with planar references.

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

IY2m=-MM-rectztTzexpiξzdz2,
IY2m=-MMn=-NNFmYm+nΔYmsinctλYm+nΔYm-Yi1-12Y2Ym+nΔYm+Yi2
IYin=-NNj=-JJsinctλYi+ρwπjJ-nN×exp-ρjJ-ρnN22,

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