Horizontal line of sight turbulence over near-ground paths and implications for adaptive optics corrections in laser communications

Bruce Martin Levine; Elizabeth A. Martinsen; Allan Wirth; Andrew J. Jankevics; Manuel Toledo-Quinones; Franklin M. Landers; Theresa L. Bruno

doi:10.1117/12.283899

23 September 1997 Horizontal line of sight turbulence over near-ground paths and implications for adaptive optics corrections in laser communications

Bruce Martin Levine, Elizabeth A. Martinsen, Allan Wirth, Andrew J. Jankevics, Manuel Toledo-Quinones, Franklin M. Landers, Theresa L. Bruno

Author Affiliations +

Proceedings Volume 3125, Propagation and Imaging through the Atmosphere; (1997) https://doi.org/10.1117/12.283899
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Atmospheric turbulence over long horizontal paths perturbs phase and also can cause severe intensity scintillation in the pupil of an optical communications receiver. This limits the bit error rate over which intensity based modulation schemes can operate. To quantifi the extent ofthe problem, we built a high speed and high resolution wavefront sensor capable of measuring both the amplitude and phase over a horizontal turbulent path. We present resulting measurements of the probability distributions ofboth amplitude and phase as well as Zernike polynomial decomposition ofthe temporal power spectra of phase fluctuations. These results are compared to existing turbulence models, and are used to determine requirements for a wavefront correction scheme using adaptive optics.

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Bruce Martin Levine, Elizabeth A. Martinsen, Allan Wirth, Andrew J. Jankevics, Manuel Toledo-Quinones, Franklin M. Landers, and Theresa L. Bruno "Horizontal line of sight turbulence over near-ground paths and implications for adaptive optics corrections in laser communications", Proc. SPIE 3125, Propagation and Imaging through the Atmosphere, (23 September 1997); https://doi.org/10.1117/12.283899

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