Abstract

We implement optical logic operations, using a polarization-encoding architecture based on digital speckle pattern interferometry (DSPI). The method is based on the intensity dependence of DSPI on the rotation of the polarization direction in the paths of the interferometer between acquisition of frames. The 16 two-input logic operations can be achieved and stored in a host computer. This scheme also offers the possibility of creating dynamic logic gates.

© 1996 Optical Society of America

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References

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1996 (3)

R. Henao, J. Pomarico, N. Russo, R. Torroba, M. Trivi, Opt. Eng. 35, 26 (1996).
[CrossRef]

R. Henao, H. Rabal, A. Tagliaferri, R. Torroba, Opt. Eng. 35, 63 (1996).
[CrossRef]

R. Henao, A. Tagliaferri, R. Torroba, Opt. Commun. 127, 14 (1996).
[CrossRef]

1995 (3)

J. Pomarico, R. Torroba, N. Bolognini, Optik 99, 89 (1995).

W. Wu, S. Campbell, P. Yeh, Opt. Lett. 20, 79 (1995).
[CrossRef] [PubMed]

M. Lehman, J. Pomarico, R. Torroba, Opt. Eng. 34, 1148 (1995).
[CrossRef]

1994 (1)

1993 (2)

1990 (2)

1984 (2)

Bartelt, H. O.

Bolognini, N.

J. Pomarico, R. Torroba, N. Bolognini, Optik 99, 89 (1995).

Campbell, S.

Henao, R.

R. Henao, A. Tagliaferri, R. Torroba, Opt. Commun. 127, 14 (1996).
[CrossRef]

R. Henao, H. Rabal, A. Tagliaferri, R. Torroba, Opt. Eng. 35, 63 (1996).
[CrossRef]

R. Henao, J. Pomarico, N. Russo, R. Torroba, M. Trivi, Opt. Eng. 35, 26 (1996).
[CrossRef]

Joenathan, C.

Kumar, G. R.

Lehman, M.

M. Lehman, J. Pomarico, R. Torroba, Opt. Eng. 34, 1148 (1995).
[CrossRef]

Lohmann, A. W.

Pomarico, J.

R. Henao, J. Pomarico, N. Russo, R. Torroba, M. Trivi, Opt. Eng. 35, 26 (1996).
[CrossRef]

M. Lehman, J. Pomarico, R. Torroba, Opt. Eng. 34, 1148 (1995).
[CrossRef]

J. Pomarico, R. Torroba, N. Bolognini, Optik 99, 89 (1995).

Rabal, H.

R. Henao, H. Rabal, A. Tagliaferri, R. Torroba, Opt. Eng. 35, 63 (1996).
[CrossRef]

Rac, K. D.

Russo, N.

R. Henao, J. Pomarico, N. Russo, R. Torroba, M. Trivi, Opt. Eng. 35, 26 (1996).
[CrossRef]

Sharma, K. K.

Sicre, E. E.

Singh, B. P.

Tagliaferri, A.

R. Henao, H. Rabal, A. Tagliaferri, R. Torroba, Opt. Eng. 35, 63 (1996).
[CrossRef]

R. Henao, A. Tagliaferri, R. Torroba, Opt. Commun. 127, 14 (1996).
[CrossRef]

Torroba, R.

R. Henao, A. Tagliaferri, R. Torroba, Opt. Commun. 127, 14 (1996).
[CrossRef]

R. Henao, H. Rabal, A. Tagliaferri, R. Torroba, Opt. Eng. 35, 63 (1996).
[CrossRef]

R. Henao, J. Pomarico, N. Russo, R. Torroba, M. Trivi, Opt. Eng. 35, 26 (1996).
[CrossRef]

M. Lehman, J. Pomarico, R. Torroba, Opt. Eng. 34, 1148 (1995).
[CrossRef]

J. Pomarico, R. Torroba, N. Bolognini, Optik 99, 89 (1995).

C. Joenathan, R. Torroba, Opt. Lett. 15, 1159 (1990).
[CrossRef] [PubMed]

Trivi, M.

R. Henao, J. Pomarico, N. Russo, R. Torroba, M. Trivi, Opt. Eng. 35, 26 (1996).
[CrossRef]

Weigelt, J.

A. W. Lohmann, J. Weigelt, Opt. Commun. 52, 255 (1984).
[CrossRef]

Wu, W.

Yeh, P.

Zhou, S.

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

Opt. Commun. (2)

A. W. Lohmann, J. Weigelt, Opt. Commun. 52, 255 (1984).
[CrossRef]

R. Henao, A. Tagliaferri, R. Torroba, Opt. Commun. 127, 14 (1996).
[CrossRef]

Opt. Eng. (3)

M. Lehman, J. Pomarico, R. Torroba, Opt. Eng. 34, 1148 (1995).
[CrossRef]

R. Henao, J. Pomarico, N. Russo, R. Torroba, M. Trivi, Opt. Eng. 35, 26 (1996).
[CrossRef]

R. Henao, H. Rabal, A. Tagliaferri, R. Torroba, Opt. Eng. 35, 63 (1996).
[CrossRef]

Opt. Lett. (6)

Optik (1)

J. Pomarico, R. Torroba, N. Bolognini, Optik 99, 89 (1995).

Other (1)

P. Yeh, Introduction to Photorefractive Nonlinear Optics (Wiley, New York, 1993).

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Figures (3)

Fig. 1
Fig. 1

DSPI setup: BS, beam splitter; M1, M2, mirrors; HWP, polarization rotator; SF’s, beam expanders; A, B, input objects; S, reference diffusing surface; CCD, charge-coupled device camera.

Fig. 2
Fig. 2

Half-wave plate cell arrays in the input objects. (a), (b) Two-input objects. (c) Cell placed in one path of the interferometer. The curved arrows represent the sense of rotation induced by the half-wave plate.

Fig. 3
Fig. 3

Scheme showing how to perform all 16 logical operations and the corresponding experimental results.

Equations (1)

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I ( x , y ) = 4 A 2 sin 2 Δ θ cos φ ( x , y ) ,

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