Abstract

We present experimental results from an all-optical associative memory that combines holography and phase conjugation. The device has the capability to recall a complete image when merely a portion of the stored image is input to the system. Multiple superimposed two-dimensional images with gray scale can be stored and recalled. In addition, we have demonstrated the system's invariance to translation of the input images.

© 1987 Optical Society of America

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References

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  1. T. Kohonen, Self Organization and Associative Memory (Springer-Verlag, New York, 1984).
  2. J. Hopfield, Proc. Natl. Acad. Sci. USA 79, 2554 (1982).
    [CrossRef] [PubMed]
  3. R. Athale, H. Szu, C. Friedlander, Opt. Lett. 11, 482 (1968).
    [CrossRef]
  4. A. Fisher, C. L. Giles, J. Lee, J. Opt. Soc. Am. A 1, 1337 (1984).
  5. G. Eichmann, H. J. Caulfield, Appl. Opt. 24, 2051 (1985).
    [CrossRef] [PubMed]
  6. N. Farhat, D. Psaltis, A. Prata, E. Paek, Appl. Opt. 24, 1469 (1985).
    [CrossRef] [PubMed]
  7. D. Anderson, Opt. Lett. 11, 45 (1986).
    [CrossRef]
  8. H. J. Caulfield, Opt. Commun. 55, 80 (1985).
    [CrossRef]
  9. M. Cohen, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 214 (1986).
  10. G. J. Dunning, E. Marom, Y. Owechko, B. H. Soffer, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 205 (1986),
  11. B. H. Soffer, G. J. Dunning, Y. Owechko, E. Marom, Opt. Lett. 11, 118 (1986).
    [CrossRef] [PubMed]
  12. M. Kim, C. Guest, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 174 (1986).
  13. H. Mada, Appl. Opt. 24, 2063 (1985).
    [CrossRef] [PubMed]
  14. A. Yariv, S. Kwong, Opt. Lett. 11, 186 (1986).
    [CrossRef] [PubMed]
  15. A. Yariv, S. Kwong, K. Kyuma, Appl. Phys. Lett. 48, 1114 (1986).
    [CrossRef]
  16. M. Levenson, K. Johnson, V. Hanchett, K. Chaing, J. Opt. Soc. Am. 71, 737 (1981).
    [CrossRef]

1986 (7)

M. Cohen, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 214 (1986).

G. J. Dunning, E. Marom, Y. Owechko, B. H. Soffer, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 205 (1986),

M. Kim, C. Guest, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 174 (1986).

A. Yariv, S. Kwong, K. Kyuma, Appl. Phys. Lett. 48, 1114 (1986).
[CrossRef]

D. Anderson, Opt. Lett. 11, 45 (1986).
[CrossRef]

B. H. Soffer, G. J. Dunning, Y. Owechko, E. Marom, Opt. Lett. 11, 118 (1986).
[CrossRef] [PubMed]

A. Yariv, S. Kwong, Opt. Lett. 11, 186 (1986).
[CrossRef] [PubMed]

1985 (4)

1984 (1)

A. Fisher, C. L. Giles, J. Lee, J. Opt. Soc. Am. A 1, 1337 (1984).

1982 (1)

J. Hopfield, Proc. Natl. Acad. Sci. USA 79, 2554 (1982).
[CrossRef] [PubMed]

1981 (1)

1968 (1)

Anderson, D.

Athale, R.

Caulfield, H. J.

Chaing, K.

Cohen, M.

M. Cohen, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 214 (1986).

Dunning, G. J.

G. J. Dunning, E. Marom, Y. Owechko, B. H. Soffer, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 205 (1986),

B. H. Soffer, G. J. Dunning, Y. Owechko, E. Marom, Opt. Lett. 11, 118 (1986).
[CrossRef] [PubMed]

Eichmann, G.

Farhat, N.

Fisher, A.

A. Fisher, C. L. Giles, J. Lee, J. Opt. Soc. Am. A 1, 1337 (1984).

Friedlander, C.

Giles, C. L.

A. Fisher, C. L. Giles, J. Lee, J. Opt. Soc. Am. A 1, 1337 (1984).

Guest, C.

M. Kim, C. Guest, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 174 (1986).

Hanchett, V.

Hopfield, J.

J. Hopfield, Proc. Natl. Acad. Sci. USA 79, 2554 (1982).
[CrossRef] [PubMed]

Johnson, K.

Kim, M.

M. Kim, C. Guest, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 174 (1986).

Kohonen, T.

T. Kohonen, Self Organization and Associative Memory (Springer-Verlag, New York, 1984).

Kwong, S.

A. Yariv, S. Kwong, Opt. Lett. 11, 186 (1986).
[CrossRef] [PubMed]

A. Yariv, S. Kwong, K. Kyuma, Appl. Phys. Lett. 48, 1114 (1986).
[CrossRef]

Kyuma, K.

A. Yariv, S. Kwong, K. Kyuma, Appl. Phys. Lett. 48, 1114 (1986).
[CrossRef]

Lee, J.

A. Fisher, C. L. Giles, J. Lee, J. Opt. Soc. Am. A 1, 1337 (1984).

Levenson, M.

Mada, H.

Marom, E.

B. H. Soffer, G. J. Dunning, Y. Owechko, E. Marom, Opt. Lett. 11, 118 (1986).
[CrossRef] [PubMed]

G. J. Dunning, E. Marom, Y. Owechko, B. H. Soffer, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 205 (1986),

Owechko, Y.

G. J. Dunning, E. Marom, Y. Owechko, B. H. Soffer, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 205 (1986),

B. H. Soffer, G. J. Dunning, Y. Owechko, E. Marom, Opt. Lett. 11, 118 (1986).
[CrossRef] [PubMed]

Paek, E.

Prata, A.

Psaltis, D.

Soffer, B. H.

G. J. Dunning, E. Marom, Y. Owechko, B. H. Soffer, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 205 (1986),

B. H. Soffer, G. J. Dunning, Y. Owechko, E. Marom, Opt. Lett. 11, 118 (1986).
[CrossRef] [PubMed]

Szu, H.

Yariv, A.

A. Yariv, S. Kwong, Opt. Lett. 11, 186 (1986).
[CrossRef] [PubMed]

A. Yariv, S. Kwong, K. Kyuma, Appl. Phys. Lett. 48, 1114 (1986).
[CrossRef]

Appl. Opt. (3)

Appl. Phys. Lett. (1)

A. Yariv, S. Kwong, K. Kyuma, Appl. Phys. Lett. 48, 1114 (1986).
[CrossRef]

J. Opt. Soc. Am. (1)

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

A. Fisher, C. L. Giles, J. Lee, J. Opt. Soc. Am. A 1, 1337 (1984).

Opt. Commun. (1)

H. J. Caulfield, Opt. Commun. 55, 80 (1985).
[CrossRef]

Opt. Lett. (4)

Proc. Natl. Acad. Sci. USA (1)

J. Hopfield, Proc. Natl. Acad. Sci. USA 79, 2554 (1982).
[CrossRef] [PubMed]

Proc. Soc. Photo-Opt. Instrum. Eng. (3)

M. Cohen, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 214 (1986).

G. J. Dunning, E. Marom, Y. Owechko, B. H. Soffer, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 205 (1986),

M. Kim, C. Guest, Proc. Soc. Photo-Opt. Instrum. Eng. 625, 174 (1986).

Other (1)

T. Kohonen, Self Organization and Associative Memory (Springer-Verlag, New York, 1984).

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Figures (3)

Fig. 1
Fig. 1

Schematic diagram of an all-optical associative memory incorporating holography and phase conjugation. BS, beam splitter; f, focal length.

Fig. 2
Fig. 2

Photographs of experimental results: (a) image stored in memory; (b) incomplete input image; (c) associated output image (inversion due to mirror reflection).

Fig. 3
Fig. 3

Photographs of multiple-image experimental results. Left to right: images stored in memory shown displaced, superimposed images stored in memory as recorded, partial input images, and corresponding associated output images (inversion due to mirror reflection).

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