Fully phase encryption using fractional Fourier transform

Naveen Kumar Nishchal; Joby Joseph; Kehar Singh

doi:10.1117/1.1570429

1 June 2003 Fully phase encryption using fractional Fourier transform

Naveen Kumar Nishchal, Joby Joseph, Kehar Singh

Optical Engineering, Vol. 42, Issue 6, (June 2003). https://doi.org/10.1117/1.1570429

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.

©(2003) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Naveen Kumar Nishchal, Joby Joseph, and Kehar Singh "Fully phase encryption using fractional Fourier transform," Optical Engineering 42(6), (1 June 2003). https://doi.org/10.1117/1.1570429

Published: 1 June 2003

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