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Free-space optical (FSO) communications
Abstract
USC researchers present a system to minimize turbulence interference in FSO communications. The method utilizes a frequency-offset Gaussian pilot tone transmitted along with the data signal, so that both undergo comparable turbulence and modal power coupling. Using a photodetector that optoelectronically...
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Telecommunications
Abstract
To enhance communication system capacity, USC researchers have successfully utilized multiplexing of multiple co-propagating beams, with each having a mutually orthogonal spatial modal structure. When multiplexing two polarizations, M frequencies, and N spatial modes, data capacity can be increased by a factor of 2 x M...
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