Photonic lanterns, 3-d waveguides, multiplane light conversion, and other components that enable space-division multiplexing

NK Fontaine, J Carpenter, S Gross… - Proceedings of the …, 2022 - ieeexplore.ieee.org
Four-mode multiplexing and manipulation technologies are reviewed in the context of space-
division multiplexing (SDM) optical communication systems. These are multiplane light …

Experimental phase stabilization of a 397-channel laser beam array via image processing in dynamic noise environment

Q Chang, T Hou, J Long, Y Deng… - Journal of Lightwave …, 2022 - ieeexplore.ieee.org
A phase-locking module is firstly validated for coherent beam combining (CBC) systems of
near 400 laser beams in dynamic noise environment. It is based on a 2-dimensional image …

Performance analysis of a spatial diversity coherent free-space optical communication system based on optimal branch block phase correction

L Wang, J Wang, X Tang, H Chen, X Chen - Optics Express, 2022 - opg.optica.org
Coherent optical communication systems have high receiver sensitivities, high spectral
efficiencies, and high-capacity information transmission, which are widely used in free …

Emulating atmospheric turbulence effects on a micro-mirror array: assessing the DMD for use with free-space-to-fibre optical connections

DM Benton, AD Ellis, Y Li, Z Hu - Engineering Research Express, 2022 - iopscience.iop.org
Emulated atmospheric turbulence effects constructed from a set of 22 Zernike modes have
been written upon a DMD micromirror array operating as a binary amplitude spatial light …

Demonstration of turbulence resiliency in a mode-, polarization-, and wavelength-multiplexed free-space optical link using pilot-assisted optoelectronic beam mixing

H Zhou, R Zhang, H Song, N Hu, H Song… - Journal of Lightwave …, 2022 - ieeexplore.ieee.org
We experimentally demonstrate turbulence-resilient free-space optical (FSO) coherent
communications with multiple multiplexed data channels in different orthogonal domains …

Multiple-aperture direct-detection receiver based on maximal ratio combining for FSO communication

MT Nguyen, V Mai, H Kim - IEEE Photonics Technology Letters, 2022 - ieeexplore.ieee.org
Collecting light using multiple small apertures offers a lot of advantages over doing so using
a single large aperture, including the effective mitigation of scintillation under strong …

Free-Space Optical Communication Based on Mode Diversity Reception Using a Nonmode Selective Photonic Lantern and Equal Gain Combining

F Wang, C Qiu, M Zhang, G Hu - IEEE Photonics Journal, 2022 - ieeexplore.ieee.org
This paper experimentally investigates the perform-ance of free-space optical (FSO)
communication based on mode diversity reception (MDR) using nonmode selective …

Average signal-to-noise ratio maximization for an intelligent reflecting surface and angle diversity receiver jointly assisted indoor visible light communication system

T Yang, P Wang, G Li, H Wang, S Li, H Shi, H He… - Applied Optics, 2022 - opg.optica.org
The intelligent reflecting surface (IRS) and angle diversity receiver (ADR) jointly assisted
indoor visible light communication (VLC) system is proposed to improve average signal-to …

Seven-aperture direct-detection receiver for free-space optical communication systems

MN Thi, V Mai, H Kim - Optical Fiber Communication Conference, 2022 - opg.optica.org
We experimentally demonstrate a free-space optical communication system utilizing seven-
aperture direct-detection receiver. We estimate the instantaneous SNR from the AC-coupled …

Coherent combining of low-power optical signals based on optically amplified error feedback

R Larsson, J Schröder, M Karlsson, PA Andrekson - Optics Express, 2022 - opg.optica.org
In free-space optical communication links, the combining of optical signals from multiple
apertures is a well-known method to collect more power for improved sensitivity or mitigation …