[HTML][HTML] Turbulence-resilient pilot-assisted self-coherent free-space optical communications using automatic optoelectronic mixing of many modes

R Zhang, N Hu, H Zhou, K Zou, X Su, Y Zhou… - Nature …, 2021 - nature.com
In free-space optical communications that use both amplitude and phase data modulation
(for example, in quadrature amplitude modulation (QAM)), the data are typically recovered …

Performance of synchronous optical receivers using atmospheric compensation techniques

A Belmonte, JM Kahn - Optics express, 2008 - opg.optica.org
We model the impact of atmospheric turbulence-induced phase and amplitude fluctuations
on free-space optical links using synchronous detection. We derive exact expressions for the …

[HTML][HTML] Compensation-free high-dimensional free-space optical communication using turbulence-resilient vector beams

Z Zhu, M Janasik, A Fyffe, D Hay, Y Zhou… - Nature …, 2021 - nature.com
Free-space optical communication is a promising means to establish versatile, secure and
high-bandwidth communication between mobile nodes for many critical applications. While …

500 Gb/s free-space optical transmission over strong atmospheric turbulence channels

Z Qu, IB Djordjevic - Optics Letters, 2016 - opg.optica.org
We experimentally demonstrate a high-spectral-efficiency, large-capacity, featured free-
space-optical (FSO) transmission system by using low-density, parity-check (LDPC) coded …

Adaptive-optics-based simultaneous pre-and post-turbulence compensation of multiple orbital-angular-momentum beams in a bidirectional free-space optical link

Y Ren, G Xie, H Huang, N Ahmed, Y Yan, L Li, C Bao… - Optica, 2014 - opg.optica.org
As a recently explored property of light, orbital angular momentum (OAM) has potential in
enabling multiplexing of multiple data-carrying beams, to increase the transmission capacity …

[HTML][HTML] Demonstration of 100 Gbps coherent free-space optical communications at LEO tracking rates

SM Walsh, SFE Karpathakis, AS McCann… - Scientific Reports, 2022 - nature.com
Free-space optical communications are poised to alleviate the data-flow bottleneck
experienced by spacecraft as traditional radio frequencies reach their practical limit. While …

Diversity–multiplexing trade-off in coherent free-space optical systems with multiple receivers

SM Aghajanzadeh, M Uysal - Journal of optical Communications and …, 2010 - opg.optica.org
In this paper, from an information theory point of view, we investigate the performance of a
coherent free-space optical (FSO) communication system with multiple receive apertures …

Multi-aperture digital coherent combining for free-space optical communication receivers

DJ Geisler, TM Yarnall, ML Stevens, CM Schieler… - Optics …, 2016 - opg.optica.org
Space-to-ground optical communication systems can benefit from reducing the size, weight,
and power profiles of space terminals. One way of reducing the required power-aperture …

Coherent free-space optical communications: opportunities and challenges

FP Guiomar, MA Fernandes, JL Nascimento… - Journal of Lightwave …, 2022 - opg.optica.org
The ever-increasing data rate demand for wireless systems is pushing the physical limits of
standalone radio-frequency communications, thus fostering the blooming of novel high …

[HTML][HTML] High-capacity free-space optical communications using wavelength-and mode-division-multiplexing in the mid-infrared region

K Zou, K Pang, H Song, J Fan, Z Zhao, H Song… - Nature …, 2022 - nature.com
Due to its absorption properties in atmosphere, the mid-infrared (mid-IR) region has gained
interest for its potential to provide high data capacity in free-space optical (FSO) …