Share Email Print
cover

Proceedings Paper

Physical Fourier encoding and compacting of optical data
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A simple way to make physical encoding of data is to use some common Fourier optics tools, like lenses and some more sophisticated ones like a digital matrix detector (CCD, Charged Coupled Devices), as in Fig. 1. Except now the encoding and the compacting of the data is not made using Hadamard transform but a Fourier transform, which has less compacting power. There is however the big advantage of physically encrypting the data instead of manually or digitally doing the computation. The input data may be anything, a note, a picture, a diagram, anything at all. It may come at a moment notice and does not require any special preparation on the part of the operator. One can accomplish real-time encoding. It may require, however that the message data to be made available in a specific format, independent of the contents of the message. For instance it may have to be inscribed on a transparency and to have certain dimensions.

Paper Details

Date Published: 20 February 2015
PDF: 7 pages
Proc. SPIE 9258, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII, 925810 (20 February 2015); doi: 10.1117/12.2071912
Show Author Affiliations
Petre Catalin Logofatu, National Institute for Laser, Plasma and Radiation Physics (Romania)
Florin Garoi, National Institute for Laser, Plasma and Radiation Physics (Romania)
Victor Damian, National Institute for Laser, Plasma and Radiation Physics (Romania)
Cristian Udrea, National Institute for Laser, Plasma and Radiation Physics (Romania)


Published in SPIE Proceedings Vol. 9258:
Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VII
Ionica Cristea; Marian Vladescu; Razvan Tamas, Editor(s)

© SPIE. Terms of Use
Back to Top