Turbulence strength and temporal correlation in a terrestrial laser communication link

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In a laboratory experiment we propagate a continuous-wave, expanded laser beam over a surface with evenly distributed heat and record the received distorted optical signal. Temperature is continuously measured in two fixed points to determine turbulence strength. Through a number of trials covering a wide range of turbulence conditions we demonstrate that the temporal correlation of the received signal fluctuations has a strong dependence on the turbulence strength at the link path. Power spectra of the received signals show a clear increase in both slope and maximum frequency as the temperature gradient increases. Measurements suggest that scintillation also correlates with temporal correlation at weak turbulence conditions and such correlation decays in stronger conditions.

Idioma originalInglés
Título de la publicación alojadaFree-Space Laser Communications X
EstadoPublicada - 2010
EventoFree-Space Laser Communications X - San Diego, CA, Estados Unidos
Duración: 2 ago. 20103 ago. 2010

Serie de la publicación

NombreProceedings of SPIE - The International Society for Optical Engineering
ISSN (versión impresa)0277-786X


ConferenciaFree-Space Laser Communications X
País/TerritorioEstados Unidos
CiudadSan Diego, CA

Nota bibliográfica

© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.


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