Abstract

<p> <a href="http://www.osa-jon.org/features/OWC_2005.html">Feature Issue on Optical Wireless Communications (OWC)</a> </p>We have developed a flexible, empirical approach for optimizing the design of free-space optical communication links by using multiframe image analysis of received intensity scintillation patterns. This is a versatile way to perform aperture-averaging analysis. A high-performance digital camera with a frame-grabbing computer interface is used to capture received intensity distributions of a He-Ne laser beam propagating in weak and intermediate turbulence conditions. The aperture-averaging results demonstrate the expected reduction in intensity fluctuations due to increasing the receiver aperture diameter for various strengths of turbulence. Aperture averaging improves the bit error rate.

© 2005 Optical Society of America

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  1. S. D. Milner and C. C. Davis, "Hybrid free-space optical∕rf networks for tactical operations," presented at IEEE Military Communications Conference MILCOM 2004 (IEEE, 2004).
  2. H. Willebrand and B. S. Ghuman, Free-Space Optics: Enabling Optical Connectivity in Today's Networks (Sams, 2002)
  3. L. C. Andrews and R. L. Phillips, Laser Beam Propagation through Random Media (SPIE, 1998).
  4. C. C. Davis and I. I. Smolyaninov, "The effect of atmospheric turbulence on bit-error-rate in an on-off-keyed optical wireless system," in Free-Space Laser Communication and Laser Imaging, D. G.Voelz and J. C.Ricklin, eds., Proc. SPIE 4489, 126-137 (2002).
  5. H. T. Yura and W. G. McKinley, "Optical scintillation statistics for IR ground-to-space laser communication systems," Appl. Opt. 22, 3353-3358 (1983).
  6. R. W. Fante, "Electromagnetic beam propagation in turbulent media," Proc. IEEE 63, 1669-1692 (1975).
  7. R. S. Lawrence and J. W. Strohbehn, "A survey of clear-air propagation effects relevant to optical communications," Proc. IEEE 58, 1523-1545 (1970).
  8. R. L. Fante, "Electric field spectrum and intensity covariance of a wave in a random medium," Radio Sci. 10, 77-85 (1975).
  9. R. L. Fante, "Irradiance scintillations: comparison of theory with experiment," J. Opt. Soc. Am. 65, 548-550 (1975).
  10. V. I. Tatarski, Wave Propagation in a Turbulent Medium (McGraw-Hill, 1961; reprinted Dover, 1967).
  11. L. M. Wasiczko and C. C. Davis, "Aperture averaging of optical scintillations: experimental results," in Atmospheric Propagation II, C. Y.Young and G. C.Gilbreath, eds., Proc. SPIE 5793 (2005).
  12. C. I. Moore, H. R. Burris, M. R. Suite, M. F. Stell, M. J. Vilcheck, M. A. Davis, R. Mahon, W. S. Rabinovich, G. C. Gilbreath, E. Oh, W. J. Scharpf, and A. E. Reed, "Spatial intensity correlation and aperture averaging measurements in a 20 mile retro-reflected lasercom link," in Free-Space Laser Communication and Active Laser Illumination III, D. G.Voelz and J. C.Ricklin, eds., Proc. SPIE 5160, 474-482 (2004).
  13. L. C. Andrews, R. L. Phillips, and C. Y. Hopen, Laser Beam Scintillation with Applications (SPIE, 2001).

Appl. Opt (1)

H. T. Yura and W. G. McKinley, "Optical scintillation statistics for IR ground-to-space laser communication systems," Appl. Opt. 22, 3353-3358 (1983).

J. Opt. Soc. Am. (1)

MILCOM 2004 (1)

S. D. Milner and C. C. Davis, "Hybrid free-space optical∕rf networks for tactical operations," presented at IEEE Military Communications Conference MILCOM 2004 (IEEE, 2004).

Proc. IEEE (2)

R. W. Fante, "Electromagnetic beam propagation in turbulent media," Proc. IEEE 63, 1669-1692 (1975).

R. S. Lawrence and J. W. Strohbehn, "A survey of clear-air propagation effects relevant to optical communications," Proc. IEEE 58, 1523-1545 (1970).

Proc. SPIE (3)

C. C. Davis and I. I. Smolyaninov, "The effect of atmospheric turbulence on bit-error-rate in an on-off-keyed optical wireless system," in Free-Space Laser Communication and Laser Imaging, D. G.Voelz and J. C.Ricklin, eds., Proc. SPIE 4489, 126-137 (2002).

L. M. Wasiczko and C. C. Davis, "Aperture averaging of optical scintillations: experimental results," in Atmospheric Propagation II, C. Y.Young and G. C.Gilbreath, eds., Proc. SPIE 5793 (2005).

C. I. Moore, H. R. Burris, M. R. Suite, M. F. Stell, M. J. Vilcheck, M. A. Davis, R. Mahon, W. S. Rabinovich, G. C. Gilbreath, E. Oh, W. J. Scharpf, and A. E. Reed, "Spatial intensity correlation and aperture averaging measurements in a 20 mile retro-reflected lasercom link," in Free-Space Laser Communication and Active Laser Illumination III, D. G.Voelz and J. C.Ricklin, eds., Proc. SPIE 5160, 474-482 (2004).

Radio Sci. (1)

R. L. Fante, "Electric field spectrum and intensity covariance of a wave in a random medium," Radio Sci. 10, 77-85 (1975).

SPIE (1)

L. C. Andrews and R. L. Phillips, Laser Beam Propagation through Random Media (SPIE, 1998).

Other (3)

H. Willebrand and B. S. Ghuman, Free-Space Optics: Enabling Optical Connectivity in Today's Networks (Sams, 2002)

V. I. Tatarski, Wave Propagation in a Turbulent Medium (McGraw-Hill, 1961; reprinted Dover, 1967).

L. C. Andrews, R. L. Phillips, and C. Y. Hopen, Laser Beam Scintillation with Applications (SPIE, 2001).

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