Twisted optical communications using orbital angular momentum

Angular momentum, a fundamental physical quantity, can be divided into spin angular momentum (SAM) and orbital angular momentum (OAM) in electromagnetic waves. Helically-phased or twisted light beams carrying OAM that exploit the spatial structure physical dimension of electromagnetic waves have ben...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Science China. Physics, mechanics & astronomy Jg. 62; H. 3; S. 34201
1. Verfasser: Wang, Jian
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Beijing Science China Press 01.03.2019
Springer
Springer Nature B.V
Schlagworte:
Angular momentum
Astronomy
Classical and Continuum Physics
Communications
Data processing
Efficiency
Electric waves
Electromagnetic radiation
Electromagnetic waves
Electromagnetism
Invited Review
Light
Light beams
Links
Multiplexing
Observations and Techniques
Optical communication
Optical properties
Orthogonality
Physical properties
Physics
Physics and Astronomy
Quantum phenomena
Radiation
Solid phases
Technology application
fiber optical communications
free-space optical communications
modulation
multiplexing
twisted optical communications
spectral efficiency
twisted light
orbital angular momentum
space-division multiplexing
structured light
ISSN:1674-7348, 1869-1927
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Angular momentum, a fundamental physical quantity, can be divided into spin angular momentum (SAM) and orbital angular momentum (OAM) in electromagnetic waves. Helically-phased or twisted light beams carrying OAM that exploit the spatial structure physical dimension of electromagnetic waves have benefited wide applications ranging from optical manipulation to quantum information processing. Using the two distinct properties of OAM, i.e., inherent orthogonality and unbounded states in principle, one can develop OAM modulation and OAM multiplexing techniques for twisted optical communications. OAM multiplexing is an alternative space-division multiplexing approach employing an orthogonal mode basis related to the spatial phase structure. In this paper, we review the recent progress in twisted optical communications using OAM in free space and fiber. The basic concept of momentum, angular momentum, SAM, OAM and OAM-carrying twisted optical communications, key techniques and devices of OAM generation/(de)multiplexing/detection, high-capacity spectrally-efficient free-space OAM links, fiber-based OAM links, and OAM processing functions are presented. Ultra-high spectral efficiency and petabit-scale freespace data links are achieved benefiting from OAM multiplexing. The key techniques and challenges of twisted optical communications are also discussed. Twisted optical communications using OAM are compatible with other existing physical dimensions such as frequency/wavelength, amplitude, phase, polarization and time, opening a possible way to facilitate continuous increase of the aggregate transmission capacity and spectral efficiency through N -dimensional multiplexing.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1674-7348
1869-1927
DOI:10.1007/s11433-018-9260-8