A review–unguided optical communications: Developments, technology evolution, and challenges

AAB Raj, P Krishnan, U Darusalam, G Kaddoum… - Electronics, 2023 - mdpi.com
This review paper discusses the complete evolution of free-space optical (FSO)
communication, also known as unguided optical communication (UOC) technologies, all the …

Tailoring light on three-dimensional photonic chips: a platform for versatile OAM mode optical interconnects

J Wang, C Cai, F Cui, M Yang, Y Liang… - Advanced …, 2023 - spiedigitallibrary.org
Explosive growth in demand for data traffic has prompted exploration of the spatial
dimension of light waves, which provides a degree of freedom to expand data transmission …

A WDM PAM4 FSO–UWOC integrated system with a channel capacity of 100 Gb/s

CY Li, XH Huang, HH Lu, YC Huang… - Journal of Lightwave …, 2019 - ieeexplore.ieee.org
A wavelength-division-multiplexing (WDM) four-level pulse amplitude modulation (PAM4)
free-space optical (FSO)-underwater wireless optical communication (UWOC) integrated …

Performance analysis of 400 Gbit/s hybrid space division multiplexing‐polarization division multiplexing‐coherent detection‐orthogonal frequency division …

V Samuthira Pandi, M Singh, A Grover… - International Journal …, 2022 - Wiley Online Library
A high‐capacity free‐space optics‐based terrestrial communication link using spectral‐
efficient space division multiplexing and polarization division multiplexing techniques has …

640 Gbps FSO data transmission system based on orbital angular momentum beam multiplexing employing optical frequency comb

B Dutta, N Sarkar, R Atta, B Kuiri, S Santra… - Optical and Quantum …, 2022 - Springer
Orbital angular momentum (OAM) beams are basically twisted beams with infinite number of
possible orthogonal OAM states. A 640 Gbps (4× 16× 10 Gbps) data transmission over 180 …

100 Gbps Data Transmission Based on Different l-valued OAM Beam Multiplexing Employing WDM Techniques and Free Space Optics

B Dutta, B Kuiri, S Santra, N Sarkar, IA Biswas… - Optical and Quantum …, 2021 - Springer
The helical phase front of the light beam carry orbital angular momentum (OAM) with
azimuthally phase dependence. OAM beams of different topological charges are generated …

Utilizing single lightwave for delivering baseband/FSO/MMW traffics simultaneously in PON architecture

CH Yeh, WP Lin, CM Luo, YR **e, YJ Chang… - IEEE …, 2019 - ieeexplore.ieee.org
In this work, we demonstrate an integrated optical baseband, free space optical (FSO)
communication and millimeter-wave (MMW) traffics through the present passive optical …

Enhanced performance of the 4× 20 Gbit/s-40 GHz OFDM-based RoFSO transmission link incorporating WDM-MDM of Hermite Gaussian and Laguerre Gaussian …

K Singh, M Singh, A Grover, R Miglani, H Singh… - Frontiers in …, 2022 - frontiersin.org
A 4× 20 Gbit/s-40 GHz orthogonal frequency-division multiplexing-based radio-on-free-
space optics information link, integrating hybrid wavelength-and mode-division multiplexed …

[HTML][HTML] 1600 Gbps PAM-4 FSO link enabled using OFCL-based WDM and OAM-multiplexing techniques

B Dutta, N Sarkar, R Atta, B Kuiri, AS Patra - Results in Optics, 2022 - Elsevier
The twisted light beams carry orbital angular momentum (OAM), which acts as additional
degrees of freedom. In this work, we have proposed a free space optics (FSO) …

2× 10 Gbit/s–10 GHz radio over free space optics transmission system incorporating mode division multiplexing of Hermite Gaussian Modes

M Singh, J Malhotra - Journal of Optical Communications, 2023 - degruyter.com
In this paper, we report the modeling and simulative investigation of a mode division
multiplexing (MDM)-based Radio over Free space optics (RoFSO) transmission system. Two …