Alan E. Willner

Miles J. Padgett

Jian Wang

Yang Yue

Hao Huang

Siddharth Ramachandran

Martin P.J. Lavery

Yan Yan

Nenad Bozinovic

Steven E. Golowich

In this chapter, we provide a comprehensive review of multimode communications using OAM. The fundamentals of OAM are introduced first followed by the techniques for OAM generation, multiplexing/demultiplexing, and detection. We then present recent research efforts to free-space communication links and fiber-based transmission links using OAM multiplexing together with optical signal processing using OAM (data exchange, add/drop, multicasting, monitoring, and compensation). Future challenges of OAM communications are discussed at the end.

Chapter 12. Multimode Communications Using Orbital Angular Momentum

Optical Fiber Telecommunications VIB

Siddharth Ramachandran

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