1 June 2003 Fully phase encryption using fractional Fourier transform
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Abstract
We implement a fully phase encryption system, using fractional Fourier transform to encrypt and decrypt a 2-D phase image obtained from an amplitude image. The encrypted image is holographically recorded in a barium titanate crystal and is then decrypted by generating through phase conjugation, a conjugate of the encrypted image. The decrypted phase image is converted into an amplitude image by the phase contrast technique using an electrically addressed spatial light modulator. Experimental results in support of the proposed idea are presented.
Naveen Kumar Nishchal, Joby Joseph, Kehar Singh, "Fully phase encryption using fractional Fourier transform," Optical Engineering 42(6), (1 June 2003). https://doi.org/10.1117/1.1570429
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