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Title: Encoding and decoding messages with chaotic lasers

Abstract

We investigate the structure of the strange attractor of a chaotic loss-modulated solid-state laser utilizing return maps based on a combination of intensity maxima and interspike intervals, as opposed to those utilizing Poincar{acute e} sections defined by the intensity maxima of the laser ({dot I}=0,{umlt I}{lt}0) alone. We find both experimentally and numerically that a simple, intrinsic relationship exists between an intensity maximum and the pair of preceding and succeeding interspike intervals. In addition, we numerically investigate encoding messages on the output of a chaotic transmitter laser and its subsequent decoding by a similar receiver laser. By exploiting the relationship between the intensity maxima and the interspike intervals, we demonstrate that the method utilized to encode the message is vital to the system{close_quote}s ability to hide the signal from unwanted deciphering. In this work alternative methods are studied in order to encode messages by modulating the magnitude of pumping of the transmitter laser and also by driving its loss modulation with more than one frequency. {copyright} {ital 1997} {ital The American Physical Society}

Authors:
 [1]; ;  [2]; ;  [3]
  1. High Performance Computing Center, University of New Mexico, 1601 Central NE, Albuquerque, New Mexico 87131 (United States)
  2. Nonlinear Optics Center, Phillips Laboratory, 3550 Aberdeen Avenue SE, Kirtland Air Force Base, New Mexico 87117-5776 (United States)
  3. School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430 (United States)
Publication Date:
OSTI Identifier:
550480
Resource Type:
Journal Article
Journal Name:
Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Additional Journal Information:
Journal Volume: 56; Journal Issue: 6; Other Information: PBD: Dec 1997
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; SOLID STATE LASERS; FREQUENCY MODULATION; NEODYMIUM; ATTRACTORS; LOSSES; NUMERICAL ANALYSIS

Citation Formats

Alsing, P M, Gavrielides, A, Kovanis, V, Roy, R, and Thornburg, Jr, K S. Encoding and decoding messages with chaotic lasers. United States: N. p., 1997. Web. doi:10.1103/PhysRevE.56.6302.
Alsing, P M, Gavrielides, A, Kovanis, V, Roy, R, & Thornburg, Jr, K S. Encoding and decoding messages with chaotic lasers. United States. https://doi.org/10.1103/PhysRevE.56.6302
Alsing, P M, Gavrielides, A, Kovanis, V, Roy, R, and Thornburg, Jr, K S. 1997. "Encoding and decoding messages with chaotic lasers". United States. https://doi.org/10.1103/PhysRevE.56.6302.
@article{osti_550480,
title = {Encoding and decoding messages with chaotic lasers},
author = {Alsing, P M and Gavrielides, A and Kovanis, V and Roy, R and Thornburg, Jr, K S},
abstractNote = {We investigate the structure of the strange attractor of a chaotic loss-modulated solid-state laser utilizing return maps based on a combination of intensity maxima and interspike intervals, as opposed to those utilizing Poincar{acute e} sections defined by the intensity maxima of the laser ({dot I}=0,{umlt I}{lt}0) alone. We find both experimentally and numerically that a simple, intrinsic relationship exists between an intensity maximum and the pair of preceding and succeeding interspike intervals. In addition, we numerically investigate encoding messages on the output of a chaotic transmitter laser and its subsequent decoding by a similar receiver laser. By exploiting the relationship between the intensity maxima and the interspike intervals, we demonstrate that the method utilized to encode the message is vital to the system{close_quote}s ability to hide the signal from unwanted deciphering. In this work alternative methods are studied in order to encode messages by modulating the magnitude of pumping of the transmitter laser and also by driving its loss modulation with more than one frequency. {copyright} {ital 1997} {ital The American Physical Society}},
doi = {10.1103/PhysRevE.56.6302},
url = {https://www.osti.gov/biblio/550480}, journal = {Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics},
number = 6,
volume = 56,
place = {United States},
year = {Mon Dec 01 00:00:00 EST 1997},
month = {Mon Dec 01 00:00:00 EST 1997}
}