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Proceedings Article

[+] Author Affiliations
Paul Corrigan, Rainer Martini

Stevens Institute of Technology

John Cabaniss

Georgia Institute of Technology

Tom Chaffee

Attochron, LLC

Proc. SPIE 6457, Free-Space Laser Communication Technologies XIX and Atmospheric Propagation of Electromagnetic Waves, 64570X (February 12, 2007); doi:10.1117/12.725395
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From Conference Volume 6457

  • Free-Space Laser Communication Technologies XIX and Atmospheric Propagation of Electromagnetic Waves
  • Steve Mecherle; Olga Korotkova
  • San Jose, CA | January 20, 2007

abstract

These experiments report the first qualitative observation of dependency of typical fog transmission on pulse length and the first systematic measurement of scattering amplitude and pattern for fs-pulse propagation through strongly scattering (fog) medium. Also, we include the first reported measurement of enhancement of fs-pulse propagation in real FSO environment. We also provide a classical analysis of the Mie-Scattering predictions, and experiments which demonstrate a different transmission behavior than is predicted. This proves only in part that the enhanced fs performance is due to a different scattering formula than is expected; absorption is normally a value which is measured by default. Once the transmission and scattering properties of a stable substance are known (usually determined in two different measurements), the difference is the absorption. This is particularly hard to do in simulated fog, as the simulation itself is unstable, as is real fog. However, there is no current measurement or claim which indicates this enhanced propagation is related to different physics of absorption of Ultrafast Pulses by the atmosphere.

© (2007) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Paul Corrigan ; Rainer Martini ; John Cabaniss and Tom Chaffee
"", Proc. SPIE 6457, Free-Space Laser Communication Technologies XIX and Atmospheric Propagation of Electromagnetic Waves, 64570X (February 12, 2007); doi:10.1117/12.725395; http://dx.doi.org/10.1117/12.725395


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