Share Email Print
cover

Proceedings Paper

Encryption for security using optical fractional Fourier transform
Author(s): Z. Lizarazo; Yezid M. Torres Moreno
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In this work we proposed one optical setup for encryption based in the fractional Fourier Transform. The Fourier transform of fractional order add another degree of freedom, of course the degree fractional used, for the optical encryption realization. The inverse fractional Fourier transform is perform by phase conjugation. This technique allows use the optical setup for encryption and decryption simultaneously. Based in experimental results and numerical simulations we find that is not arbitrary the use of the keys for encryption and decryption operations. The optical fractional Fourier transform has been obtained using the Lohmann type I configuration and a photorefractive crystal BGO working as mirror phase conjugation has been used.

Paper Details

Date Published: 21 October 2004
PDF: 6 pages
Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); doi: 10.1117/12.591976
Show Author Affiliations
Z. Lizarazo, Univ. Industrial de Santander (Colombia)
Yezid M. Torres Moreno, Univ. Industrial de Santander (Colombia)


Published in SPIE Proceedings Vol. 5622:
5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications
Aristides Marcano O.; Jose Luis Paz, Editor(s)

© SPIE. Terms of Use
Back to Top