Perspective on using multiple orbital‐angular‐momentum beams for enhanced capacity in free‐space optical communication links

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Abstract
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.
Funding Information
  • Vannevar Bush Faculty Fellowship sponsored by the Basic Research Office of the Assistant Secretary of Defense (ASD) for Research and Engineering (R&E) and funded by the Office of Naval Research (N00014-16-1-2813)
  • Defense Security Cooperation Agency (DSCA 4441006051)
  • Air Force Research Laboratory (FA8650-20-C-1105)
  • National Science Foundation (ECCS-1509965)
  • Office of Naval Research through a MURI grant (N00014-20-1-2558)

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