Share Email Print

Optical Engineering

Fully phase encryption using fractional Fourier transform
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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.

Paper Details

Date Published: 1 June 2003
PDF: 6 pages
Opt. Eng. 42(6) doi: 10.1117/1.1570429
Published in: Optical Engineering Volume 42, Issue 6
Show Author Affiliations
Naveen Kumar Nishchal, Indian Institute of Technology Delhi (India)
Joby Joseph, Indian Institute of Technology Delhi (India)
Kehar Singh, Indian Institute of Technology Delhi (India)

© SPIE. Terms of Use
Back to Top