Abstract

In this Letter, we present to the best of our knowledge a new all-optical technique for multiple-image encryption and multiplexing, based on fractal encrypting masks. The optical architecture is a joint transform correlator. The multiplexed encrypted data are stored in a photorefractive crystal. The fractal parameters of the key can be easily tuned to lead to a multiplexing operation without cross talk effects. Experimental results that support the potential of the method are presented.

© 2012 Optical Society of America

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References

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2011 (1)

2010 (1)

2009 (2)

2007 (1)

Z. Liu and S. Liu, Opt. Commun. 275, 324 (2007).
[CrossRef]

2006 (2)

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 259, 532 (2006).
[CrossRef]

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 261, 29 (2006).
[CrossRef]

2005 (1)

2004 (1)

2000 (2)

1999 (2)

1995 (1)

Barrera, J. F.

F. Mosso, J. F. Barrera, M. Tebaldi, N. Bolognini, and R. Torroba, Opt. Express 19, 5706 (2011).

R. Henao, E. Rueda, J. F. Barrera, and R. Torroba, Opt. Lett. 35, 333 (2010).
[CrossRef]

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 259, 532 (2006).
[CrossRef]

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 261, 29 (2006).
[CrossRef]

Bolognini, N.

F. Mosso, J. F. Barrera, M. Tebaldi, N. Bolognini, and R. Torroba, Opt. Express 19, 5706 (2011).

M. Tebaldi, W. D. Furlan, R. Torroba, and N. Bolognini, Opt. Lett. 34, 316 (2009).
[CrossRef]

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 259, 532 (2006).
[CrossRef]

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 261, 29 (2006).
[CrossRef]

Chang, H. T.

Furlan, W. D.

Henao, R.

R. Henao, E. Rueda, J. F. Barrera, and R. Torroba, Opt. Lett. 35, 333 (2010).
[CrossRef]

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 261, 29 (2006).
[CrossRef]

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 259, 532 (2006).
[CrossRef]

Hwang, H. E.

Javidi, B.

Joseph, J.

Lie, W. N.

Liu, S.

Z. Liu and S. Liu, Opt. Commun. 275, 324 (2007).
[CrossRef]

Liu, Z.

Z. Liu and S. Liu, Opt. Commun. 275, 324 (2007).
[CrossRef]

Matoba, O.

Monsoriu, J. A.

Mosso, F.

Nomura, T.

T. Nomura and B. Javidi, Opt. Eng. 39, 2031 (2000).
[CrossRef]

Refregier, P.

Rueda, E.

Saavedra, G.

Singh, K.

Situ, G.

Tebaldi, M.

F. Mosso, J. F. Barrera, M. Tebaldi, N. Bolognini, and R. Torroba, Opt. Express 19, 5706 (2011).

M. Tebaldi, W. D. Furlan, R. Torroba, and N. Bolognini, Opt. Lett. 34, 316 (2009).
[CrossRef]

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 261, 29 (2006).
[CrossRef]

J. F. Barrera, R. Henao, M. Tebaldi, R. Torroba, and N. Bolognini, Opt. Commun. 259, 532 (2006).
[CrossRef]

Torroba, R.

Unnikrishnan, G.

Zhang, J.

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Figures (3)

Fig. 1.
Fig. 1.

(a) Fractal Cantor set (N=4) developed up to level S=2, constructed from the initiator segment S=0, and the generator S=1 [13] and (b) resulting FZP structured mask for S=2.

Fig. 2.
Fig. 2.

Experimental arrangement: (a) write-in step and (b) read-out step (He–Ne laser, λ=632.8nm), L1 and L2: lenses with focal lengths of 100 and 50 mm, respectively). The multiplexed joint power spectrum is stored in a BTO crystal.

Fig. 3.
Fig. 3.

Upper row shows the fractal masks with parameters N=4, S=2, γ=1/7, and lacunarity (a) ε=0.01, (b) ε=0.07, and (c) ε=0.19. Bottom row, (d), (e), (f), corresponding decrypted objects.

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