[HTML][HTML] Orbital angular momentum of light for communications

AE Willner, K Pang, H Song, K Zou, H Zhou - Applied Physics Reviews, 2021 - pubs.aip.org
Structured light, especially beams carrying orbital angular momentum (OAM), has gained
much interest due to its unique amplitude and phase structures. In terms of communication …

Communicating using spatial mode multiplexing: Potentials, challenges, and perspectives

A Trichili, KH Park, M Zghal, BS Ooi… - … Surveys & Tutorials, 2019 - ieeexplore.ieee.org
Time, polarization, and wavelength multiplexing schemes have been used to satisfy the
growing need of transmission capacity. Using space as a new dimension for communication …

Divergence-degenerate spatial multiplexing towards future ultrahigh capacity, low error-rate optical communications

Z Wan, Y Shen, Z Wang, Z Shi, Q Liu… - Light: Science & …, 2022 - nature.com
Spatial mode (de) multiplexing of orbital angular momentum (OAM) beams is a promising
solution to address future bandwidth issues, but the rapidly increasing divergence with the …

Robust structured light in atmospheric turbulence

A Klug, C Peters, A Forbes - Advanced Photonics, 2023 - spiedigitallibrary.org
Structured light is routinely used in free-space optical communication channels, both
classical and quantum, where information is encoded in the spatial structure of the mode for …

[HTML][HTML] Perspectives on advances in high-capacity, free-space communications using multiplexing of orbital-angular-momentum beams

AE Willner, Z Zhao, C Liu, R Zhang, H Song, K Pang… - Apl Photonics, 2021 - pubs.aip.org
Beams carrying orbital-angular-momentum (OAM) have gained much interest due to their
unique amplitude and phase structures. In terms of communication systems, each of the …

Performance enhancement of an orbital-angular-momentum-multiplexed free-space optical link under atmospheric turbulence effects using spatial-mode multiplexing …

BB Yousif, EE Elsayed - IEEE access, 2019 - ieeexplore.ieee.org
In this paper, we propose an adaptive multiple-input-multiple-output (MIMO) free-space
optical (FSO) links using an orbital-angular-momentum (OAM)-multiplexed based on the …

Deep-learning-assisted communication capacity enhancement by non-orthogonal state recognition of structured light

H Wang, Z Zhan, Y Shen, J Hu, X Fu, Q Liu - Optics Express, 2022 - opg.optica.org
In light of pending capacity crunch in information era, orbital-angular-momenta-carrying
vortex beams are gaining traction thanks to enlarged transmission capability. However, high …

768-ary Laguerre-Gaussian-mode shift keying free-space optical communication based on convolutional neural networks

H Luan, D Lin, K Li, W Meng, M Gu, X Fang - Optics Express, 2021 - opg.optica.org
Beyond orbital angular momentum of Laguerre-Gaussian (LG) modes, the radial index can
also be exploited as information channel in free-space optical (FSO) communication to …

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

AE Willner, X Su, H Zhou, A Minoofar, Z Zhao… - Journal of …, 2022 - iopscience.iop.org
Structured electromagnetic waves carrying orbital angular momentum (OAM) have been
explored in various frequency regimes to enhance the data capacity of communication …

400-Gbit/s QPSK free-space optical communication link based on four-fold multiplexing of Hermite–Gaussian or Laguerre–Gaussian modes by varying both modal …

K Pang, H Song, Z Zhao, R Zhang, H Song, G **e, L Li… - Optics letters, 2018 - opg.optica.org
We experimentally demonstrate the four-fold multiplexing of Hermite–Gaussian (HG_mn) or
Laguerre–Gaussian (LG_lp) modes to achieve a 400 Gbit/s quadrature-phase-shift-keyed …