Employing Bessel-Gaussian Beams to Improve Physical-Layer Security in Free-Space Optical Communications
AffiliationUniv Arizona, Coll Opt Sci
Univ Arizona, Dept Elect & Comp Engn
MetadataShow full item record
CitationT. Wang, J. A. Gariano and I. B. Djordjevic, "Employing Bessel-Gaussian Beams to Improve Physical-Layer Security in Free-Space Optical Communications," in IEEE Photonics Journal, vol. 10, no. 5, pp. 1-13, Oct. 2018, Art no. 7907113. doi: 10.1109/JPHOT.2018.2867173
JournalIEEE PHOTONICS JOURNAL
RightsCopyright © 2018, IEEE
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractPhysical-layer security in free-space optical communications channels can be compromised when an eavesdropper performs optical beam-splitting attacks over an atmospheric channel. Previous simulations have shown that Laguerre-Gaussian orbital angular momentum-carrying beams can provide higher secrecy capacities compared to that of ordinary Gaussian beams. In this paper, we determine if Bessel-Gaussian beams can provide further improvement over their corresponding Laguerre-Gaussian counterparts. Using computer simulations and experiments with spatial light modulators, an increase in secrecy capacity of 10 to 30 bits/sec/Hz in the weak to medium turbulence regimes is demonstrated. This verifies that Bessel-Gaussian beams have more resiliency to atmospheric turbulence effects than Laguerre-Gaussian beams. Furthermore, research on optimizing the quality of these beams can help to realize a practical system for more secure communications.
NoteOpen access journal.
VersionFinal published version
SponsorsONR MURI program [N00014-13-1-0627]