Abstract

We introduce a two-dimensional interleaving method to improve the output accuracy of volume holographic correlators. The method redistributes the pattern of every input and stored image without changing their inner products, so it can eliminate the impact of correlation pattern difference on calculated inner product values. Experimental tests show that this method can achieve more accurate output intensity for every channel, which agrees much better with the theoretical value than without this method.

© 2007 Optical Society of America

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References

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2006 (2)

A. Heifetz, J. T. Shen, J. K. Lee, R. Tripathi, and M. S. Shahriar, Opt. Eng. 45, 025201 (2006)
[CrossRef]

Z. Zalevsky, A. Rubner, J. García, P. Garcia-Martinez, C. Ferreira, and E. Marom, Appl. Opt. 45, 7325 (2006).
[CrossRef] [PubMed]

2004 (1)

2003 (2)

2000 (1)

F. Grawert, S. Kobras, G. W. Burr, H. Coufal, H. Hanssen, M. Riedel, C. Michael Jefferson, and M. Juric, Proc. SPIE 4109, 177 (2000).
[CrossRef]

1999 (1)

1997 (1)

A. Pu, R. Denkewalter, and D. Psaltis, Opt. Eng. 36, 2737 (1997).
[CrossRef]

1995 (2)

C. Gu, H. Fu, and J. R. Lien, J. Opt. Soc. Am. A 12, 861 (1995).
[CrossRef]

D. K. McMillen, C. G. Zabel, P. S. Erbach, and D. A. Gregory, Opt. Eng. 34, 2232 (1995).
[CrossRef]

1994 (1)

G. W. Burr, F. H. Mok, and D. Psaltis, Proc. SPIE 2297, 402 (1994).
[CrossRef]

Appl. Opt. (2)

J. Opt. Soc. Am. A (1)

Opt. Eng. (3)

A. Heifetz, J. T. Shen, J. K. Lee, R. Tripathi, and M. S. Shahriar, Opt. Eng. 45, 025201 (2006)
[CrossRef]

A. Pu, R. Denkewalter, and D. Psaltis, Opt. Eng. 36, 2737 (1997).
[CrossRef]

D. K. McMillen, C. G. Zabel, P. S. Erbach, and D. A. Gregory, Opt. Eng. 34, 2232 (1995).
[CrossRef]

Opt. Express (1)

Opt. Lett. (1)

Proc. SPIE (3)

F. Grawert, S. Kobras, G. W. Burr, H. Coufal, H. Hanssen, M. Riedel, C. Michael Jefferson, and M. Juric, Proc. SPIE 4109, 177 (2000).
[CrossRef]

G. W. Burr, Proc. SPIE 5181, 70 (2003).
[CrossRef]

G. W. Burr, F. H. Mok, and D. Psaltis, Proc. SPIE 2297, 402 (1994).
[CrossRef]

Other (2)

S. Kobras, 'Associative recall of digital data in volume holographic storage systems,' Master's thesis (Technische Universität München, 1998).

G. C. Clark,Jr., and J. Bibb Cain, Error-Correction Coding for Digital Communications (Plenum, 1981).

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Figures (7)

Fig. 1
Fig. 1

(a) For uninterleaved images, correlation patterns are different. (b) For interleaved images, correlation patterns are similar.

Fig. 2
Fig. 2

Experimental setup for testing the effect of 2D interleaving. PBS, polarizing beam splitter; SLM, spatial light modulator; S, shutter; L 1 , L 2 , L 3 , and L 4 , lenses; M, mirror; λ 2 , half-wave-plate.

Fig. 3
Fig. 3

Test images. (a) Uninterleaved; (b) interleaved by computer. A small area is magnified to show the fine structure of the interleaved images.

Fig. 4
Fig. 4

Output correlation spots. (a) Uninterleaved; (b) interleaved.

Fig. 5
Fig. 5

Spot brightness of the fifth column in Figs. 4a, 4b. (a) Uninterleaved; (b) interleaved; (c) theoretical.

Fig. 6
Fig. 6

Real car test images. (a) The stored image; (b) five input images.

Fig. 7
Fig. 7

Calculated inner products between Figs. 6a, 6b. (a) Using the uninterleaved images in Fig. 6; (b) using the interleaved version of Fig. 6.

Equations (1)

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I 1 I 2 = P { I 1 } P { I 2 } ,

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