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Perspective on using multiple orbital-angular-momentum beams for enhanced capacity in free-space optical communication links
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DOI：10.1515/nanoph-2020-0435.png)
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Abstract
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Structured light has gained much interest in increasing communications capacity through the simultaneous transmission of multiple orthogonal beams. This paper gives a perspective on the current state of the art and future challenges, especially with regards to the use of multiple orbital angular momentum modes for system performance enhancement.
Keywords:
free-space links
optical communications
optical fibers
orbital angular momentum
space division multiplexing
structured light
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