Document Type
Article
Publication Date
12-2014
Publication Source
Optical Engineering
Abstract
Using intensity feedback, the closed-loop behavior of an acousto-optic hybrid device under profiled beam propagation has been recently shown to exhibit wider chaotic bands potentially leading to an increase in both the dynamic range and sensitivity to key parameters that characterize the encryption. In this work, a detailed examination is carried out vis-à-vis the robustness of the encryption/decryption process relative to parameter mismatch for both analog and pulse code modulation signals, and bit error rate (BER) curves are used to examine the impact of additive white noise.
The simulations with profiled input beams are shown to produce a stronger encryption key (i.e., much lower parametric tolerance thresholds) relative to simulations with uniform plane wave input beams. In each case, it is shown that the tolerance for key parameters drops by factors ranging from 10 to 20 times below those for uniform plane wave propagation.
Results are shown to be at consistently lower tolerances for secure transmission of analog and digital signals using parameter tolerance measures, as well as BER performance measures for digital signals. These results hold out the promise for considerably greater information transmission security for such a system.
Inclusive pages
126102-1 to 126102-8
ISBN/ISSN
0091-3286
Document Version
Published Version
Copyright
Copyright © 2014, Society of Photo-optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited.
Publisher
Society of Photo-optical Instrumentation Engineers
Volume
53
Peer Reviewed
yes
Issue
12
eCommons Citation
Almehmadi, Fares S. and Chatterjee, Monish Ranjan, "Improved Performance of Analog and Digital Acousto-Optic Modulation with Feedback under Profiled Beam Propagation for Secure Communication using Chaos" (2014). Electrical and Computer Engineering Faculty Publications. 333.
https://ecommons.udayton.edu/ece_fac_pub/333
Included in
Computer Engineering Commons, Electrical and Electronics Commons, Electromagnetics and Photonics Commons, Optics Commons, Other Electrical and Computer Engineering Commons, Systems and Communications Commons
Comments
This document is provided for download in compliance with the publisher's policy on self-archiving. Permission documentation is on file.
DOI: http://dx.doi.org/10.1117/1.OE.53.12.126102