Security Enhancement in Free-Space Optics Using Acousto-Optic Deflectors

Eghbal, Mina; Abouei, Jamshid

doi:10.1364/jocn.6.000684

Cited by 41 publications

(24 citation statements)

References 20 publications

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“…the lower most layer of the OSI reference model. A proposed novel security mechanism and hardware design for beam transmission in physical layer of a FSO communication is discussed in [7]. The transmitter in FSO sends consecutive packets through diverse beam paths between transmitter and receiver using acousto-optic deflector (AOD) [7].…”

Section: Acousto-optic Deflectormentioning

confidence: 99%

“…Hence, this increases the opportunity of eavesdropping in case of long transmission links. Thus to overcome this disadvantage a proposed novel physical layer design is developed to improve the security of the system [7].…”

Section: Physical Network Securitymentioning

confidence: 99%

“…In the proposed novel [7] design of physical layer, the beam transmission is done through different paths, i.e. the packets of data is transmitted from transmitter to receiver via successive different paths between transmitter aperture (TA) and receiver aperture (RA) using acousto-optic deflector (AOD).…”

Section: Fig 7 Conventional Fso Linkmentioning

confidence: 99%

“…When the parallel beam travels straight through the partial mirror BS1 and passes through the concave lens, it diverges from the axis I. As the focal points of concave lens and convex lens 2 are same, when the diverged beam passes through convex lens 2 it causes the beam to propagate again in parallel with the optical axis I and is incident on AOD2 or AOD3 depending on beam path selected [7].…”

Section: Fig 7 Conventional Fso Linkmentioning

confidence: 99%

See 3 more Smart Citations

Enhancement in Free Space Optical Communication: A Review

Gursale¹,

Patil²,

Kakade³

2016

International Journal of Advanced Research in Computer and Comm

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Abstract:In recent year, technology development has taken place in communication standards such as fourth generation (4G) or fifth generation (5G) and we are experiencing a rapid growth in information and communication technologies. Moreover, the demand of higher data rates has been increasing with development in technology. Free Space Optic (FSO) connections are becoming an enchanting alternative for copper, RF and fiber optic communication techniques, in terms of speed, costing, distance and mobility. Higher data rate demands higher data security as well as reliability. Optical communication security is important not only at the management layer but also at the physical layer. The following article focuses on enhancements in FSO communication techniques to improve the reliability of the FSO link and data security. Line of Sight (LOS) is maintained using Fine Tracking System which uses 4-quadrant detector (4QD), the user data security can be achieved by implementing quantum cryptography, and a secure physical network can obtained by using Acousto-optic Deflectors (AOD).

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Section: Acousto-optic Deflectormentioning

confidence: 99%

Section: Physical Network Securitymentioning

confidence: 99%

Section: Fig 7 Conventional Fso Linkmentioning

confidence: 99%

Section: Fig 7 Conventional Fso Linkmentioning

confidence: 99%

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Enhancement in Free Space Optical Communication: A Review

Gursale¹,

Patil²,

Kakade³

2016

International Journal of Advanced Research in Computer and Comm

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“…Although extensive experimental [7][8][9] and mathematical [10][11][12] advancement in Ro-FSO and FSO systems demonstrate that optical beams are more secure due to their narrow divergence compared to radio beams, physical layer attacks from eavesdroppers still present a significant challenge [13]. To address this, recent strategies include employing a secret key generated from the atmospheric turbulence and scintillation characteristics of the FSO channel [14] or by controlling the radius of the beam using deflectors to decrease the probability of eavesdropping [15]. Mode division multiplexing (MDM) is a diversity technique for multiplexing several data streams using different eigenmodes for increasing channel capacity [16][17][18][19][20][21] and has in recent years been used for enhancing physical layer security [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Optical Mode Division Multiplexing for Secure Ro-FSO WLANs

et al. 2015

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The widespread deployment of various wireless radio access systems in public areas poses acute issues in frequency assignment. Radio-over-free-space-optics (Ro-FSO) technology enhances spectral efficiency and may pave the way towards a ubiquitous platform for radio and optical domains without optical fiber in local area networks. This paper investigates the performance of simultaneous optical mode division multiplexing of a donut mode, a Laguerre-Gaussian (LG) mode and two Hermite-Gaussian (HG) modes to realize 4 x 20Gbps transmission in a Ro-FSO system under clear weather conditions. The power coupling coefficients, received power, signal-to-noise ratios and constellations and are analyzed.

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