Optical communications using orbital angular momentum beams

  title={Optical communications using orbital angular momentum beams},
  author={Alan E. Willner and Hao Huang and Yan Yan and Yongxiong Ren and Nisar Ahmed and Guodong Xie and Changjing Bao and Long Li and Yinwen Cao and Zhe Zhao and Jian Wang and Martin P. J. Lavery and Moshe Tur and Siddharth Ramachandran and Andreas F. Molisch and Nima Ashrafi and Solyman Ashrafi},
  journal={Advances in Optics and Photonics},
Orbital angular momentum (OAM), which describes the “phase twist” (helical phase pattern) of light beams, has recently gained interest due to its potential applications in many diverse areas. Particularly promising is the use of OAM for optical communications since: (i) coaxially propagating OAM beams with different azimuthal OAM states are mutually orthogonal, (ii) inter-beam crosstalk can be minimized, and (iii) the beams can be efficiently multiplexed and demultiplexed. As a result, multiple… 

850-nm hybrid fiber/free-space optical communications using orbital angular momentum modes.

This paper discusses an experimental demonstration of a proposal for next generation FSO communication system where a light beam carrying different OAM modes and affected by ℳ turbulence is coupled to the multimode fiber link and reports a better and more robust behavior of higher order OAM Modes when the intermodal dispersion is dominant in the fiber after exceeding its maximum range of operation.

Orbital Angular Momentum Waves: Generation, Detection, and Emerging Applications

The methods for generation and detection of optical OAM, radio OAM and acoustic OAM are summarized and compared and the applications and technical challenges of OAM in communications are represented, including free-space optical communications, optical fiber communications, radio communications and acoustic communications.

Orbital angular momentum and beyond in free-space optical communications

Abstract Orbital angular momentum (OAM), which describes tailoring the spatial physical dimension of light waves into a helical phase structure, has given rise to many applications in optical

Spectrally efficient free-space optical communications employing orbital angular momentum multiplexing

Similar to other physical dimensions of light such as amplitude, phase, frequency, time and polarization, orbital angular momentum (OAM), which refers to the spatial structure of light (a spiral

Twisted optical communications using orbital angular momentum

  • Jian Wang
  • Physics
    Science China Physics, Mechanics & Astronomy
  • 2018
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

Generation of Orbital Angular Momentum Modes Using Fiber Systems

Orbital angular momentum (OAM) beams, characterized by the helical phase wavefront, have received significant interest in various areas of study. There are many methods to generate OAM beams, which

High capacity terahertz communication systems based on multiple orbital-angular-momentum beams

Structured electromagnetic waves carrying orbital angular momentum (OAM) have been explored in various frequency regimes to enhance the data capacity of communication systems by multiplexing multiple

The Orbital Angular Momentum Encoding System With Radial Indices of Laguerre–Gaussian Beam

Orbital angular momentum (OAM) in optical vortices (OV) beams offers a new dimension of space mode because coaxially propagating OV beams with different azimuthal OAM states are mutually orthogonal.



Reconfigurable switching of orbital-angular-momentum-based free-space data channels.

OAM-based reconfigurable optical switching functions among multiple OAM beams are demonstrated and the scheme of selective OAM-beam manipulation can be potentially cascaded to realize an arbitrary n×n switching function.

Free-space optical transmission with orbital angular momentum division multiplexing

The experimental demonstration of a free-space optical transmission system with orbital angular momentum (OAM) division multiplexing is reported. Two beams have been multiplexed with different values

A Different Angle on Light Communications

This work has demonstrated a 2.56 terabits per second free-space optical data transfer using OAM, which implies that the light wave's phase front is twisting along the direction of propagation.

Performance metrics and design considerations for a free-space optical orbital-angular-momentum–multiplexed communication link

The capacity of free-space optical (FSO) communication links could potentially be increased by the simultaneous transmission of multiple orbital angular momentum (OAM) beams. For such an OAM

Deep-space and near-Earth optical communications by coded orbital angular momentum (OAM) modulation.

It is shown that in combination with LDPC codes, the OAM-based modulation schemes can operate even under strong atmospheric turbulence regime, and the spectral efficiency of proposed scheme is N2/log2N times better than that of PPM.

High-capacity millimetre-wave communications with orbital angular momentum multiplexing

This work demonstrates a 32-Gbit’s−1 millimetre-wave link over 2.5 metres with a spectral efficiency of ~16 bit s− 1 Hz−1 using four independent orbital–angular momentum beams on each of two polarizations, and shows an 8-Gbits−1 link containing two orbital angular momentum beams with crosstalk less than −12.5 dB.

Free-space coherent optical communication with orbital angular, momentum multiplexing/demultiplexing using a hybrid 3D photonic integrated circuit.

Free-space space-division-multiplexing (SDM) with 15 orbital angular momentum (OAM) states using a three-dimensional (3D) photonic integrated circuit (PIC) using a low excess loss hybrid device.

Free-space information transfer using light beams carrying orbital angular momentum.

The transfer of information encoded as orbital angular momentum states of a light beam is demonstrated, which is resistant to eavesdropping and gives an experimental insight into the effects of aperturing and misalignment of the beam on the OAM measurement and demonstrates the uncertainty relationship for OAM.

On the scalability of ring fiber designs for OAM multiplexing.

The theory and implementation of this nascent class of waveguides, including a class of so-called ring-fibers, are reviewed, and the opportunities and limitations they present for OAM scalability are discussed.

Adaptive optics compensation of multiple orbital angular momentum beams propagating through emulated atmospheric turbulence.

The experimental results indicate that the correction pattern obtained from the Gaussian probe beam could be used to simultaneously compensate multiple turbulence-distorted OAM beams with different orders.