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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 3, Iss. 3 — Mar. 1, 2011
  • pp: 215–222

Adaptive Optimization of a Free Space Laser Communication System Under Dynamic Link Attenuation

Ohad Barsimantov and Vladimir V. Nikulin  »View Author Affiliations

Journal of Optical Communications and Networking, Vol. 3, Issue 3, pp. 215-222 (2011)

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Free space laser communication is a potentially attractive technology that can offer intrinsically high data rates and resistance to jamming, and facilitates low probability of interception and low probability of detection (LPI/LPD). However, practical links established in the atmosphere are adversely affected by signal attenuation and dynamic turbulence, which can create spatial and temporal variations in the refractive index. The resulting distortions lead to reduced signal power and increased bit error rate (BER), even over short ranges. To overcome possible signal degradation under adverse conditions, laser communication systems must increase power and reduce the communication bit rate. Under dynamic link attenuation both of these parameters can be tuned to optimize performance. In this paper, we present and compare three methods for optimizing optical link efficiency. The work is based on experiments conducted with a commercially available system, and its scaled-down laboratory prototype. The proposed methods demonstrate different degrees of optimization capabilities under practical operating conditions, but, in general, they maintain the highest possible bit rate at the minimum power consumption, while obtaining an acceptable BER.

© 2011 OSA

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(140.0140) Lasers and laser optics : Lasers and laser optics

ToC Category:
Research Papers

Original Manuscript: July 26, 2010
Revised Manuscript: December 23, 2010
Manuscript Accepted: January 4, 2011
Published: February 28, 2011

Ohad Barsimantov and Vladimir V. Nikulin, "Adaptive Optimization of a Free Space Laser Communication System Under Dynamic Link Attenuation," J. Opt. Commun. Netw. 3, 215-222 (2011)

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