Capacity of coherent free-space optical links using atmospheric compensation techniques.
We analyze the ergodic capacity and epsilon-outage capacity of coherent optical links through the turbulent atmosphere. We consider the effects of log-normal amplitude fluctuations and Gaussian phase fluctuations, in addition to local oscillator shot noise, for both passive receivers and those employing active modal compensation of wavefront phase distortion. We study the effect of various parameters, including the ratio of receiver aperture diameter to wavefront coherence diameter, the strength of the scintillation index, and the number of modes compensated.
Belmonte
Aniceto
A
Technical University of Catalonia, Department of Signal Theory and Communications, 08034 Barcelona, Spain. belmonte@tsc.upc.edu
Kahn
Joseph M
JM
D000465:Algorithms; D016477:Artifacts; D001272:Atmosphere; D003198:Computer Simulation; D016247:Information Storage and Retrieval / Q000379:methods*; D008027:Light; D008962:Models, Theoretical; D012542:Scattering, Radiation; D013685:Telecommunications