1 October 2004 Phase-only optical decryption in a planar integrated micro-optics system
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Optical Engineering, 43(10), (2004). doi:10.1117/1.1782613
Abstract
We present a compact optical decryption system using the generalized phase contrast (GPC) method implemented in a planar integrated micro-optical (PO) device. An encrypted phase pattern is deciphered by the application of a decrypting phase key and visualized using a miniaturized implementation of the GPC method. The current proof-of-principle demonstration makes use of a PO device composed of diffractive micro-optical elements to form a 4-f lens imaging setup with a spatial phase-only filter at the Fourier plane. Successful decryption of a 17×9-pixel encrypted phase mask is achieved with high-contrast visualization of the original pattern.
Vincent Ricardo Daria, Peter John L. Rodrigo, Stefan Sinzinger, Jesper Glückstad, "Phase-only optical decryption in a planar integrated micro-optics system," Optical Engineering 43(10), (1 October 2004). http://dx.doi.org/10.1117/1.1782613
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KEYWORDS
Visualization

Integrated optics

Spatial light modulators

Micro optics

Image encryption

Optical components

Phase contrast

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