Turbulence strength and temporal correlation in a terrestrial laser communication link

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Resumen

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
DOI
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
Volumen7814
ISSN (versión impresa)0277-786X

Conferencia

ConferenciaFree-Space Laser Communications X
País/TerritorioEstados Unidos
CiudadSan Diego, CA
Período2/08/103/08/10

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