Emerging Technologies for 6G Space Optical Communication Networks

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optical Communication and Network".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 990

Special Issue Editors


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Guest Editor
1. Key Laboratory of Space Utilization, Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 100094, China
2. University of Chinese Academy of Sciences, Beijing 100190, China
Interests: wireless networks; 6G; optical wireless communications; digital signal processing; channel coding; network coding

E-Mail Website
Guest Editor
School of Computer and Communication Engineering, University of Science and Technology Beijing, No. 30 Xue Yuan Road, Haidian, Beijing 100083, China
Interests: wireless communications; network coding; coding theory; optical communications

Special Issue Information

Dear Colleagues,

The 6G space-based optical wireless network represents a cutting-edge frontier of wireless communication technology, poised to revolutionize connectivity and information exchange in unprecedented ways. Building upon the state-of-the-art 5G radio frequency (RF)-based space communication system, the 6G space-based optical wireless network leverages the power of space-based optical communication to offer ultra-high data rates, ultra-low latency, ultra-low latency, massive connectivity, and high energy efficiency.

Compared with traditional radio frequency (RF) systems, space optical communication networks utilize laser diodes (LDs) or light-emitting diodes (LEDs) to transmit information through optical fibers and free space. However, the successful deployment of 6G space optical communication systems faces numerous challenges, including atmospheric effects, turbulence, pointing and tracking accuracy, and the need for efficient modulation and coding techniques.

The scope of this Special Issue includes, but is not limited to, the following topics:

  1. Optical transceivers for space networks;
  2. Free-space optical communication;
  3. Satellite-to-satellite and satellite-to-ground optical communication;
  4. Coding theory and applications for space networks;
  5. Quantum communication and quantum key distribution in space;
  6. Integration of space optical communication with terrestrial networks;
  7. Performance evaluation and optimization.

By fostering collaboration and knowledge exchange, this Special Issue seeks to accelerate the development and deployment of the 6G space-based wireless network, ultimately shaping the future of wireless communication and connectivity on a global scale.

Prof. Dr. Lu Lu
Prof. Dr. Qifu Sun
Guest Editors

Manuscript Submission Information

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Keywords

  • 6G
  • space-based networks
  • non-territorial networks
  • optical communications
  • optical transceivers
  • wireless networks
  • space optical communication networks
  • coding theory and applications
  • quantum communication and quantum key distribution (QKD)
  • system design, case studies, testbeds, prototypes, model validation, applications, implementation and experimental evaluations

Published Papers (1 paper)

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Research

11 pages, 4620 KiB  
Article
Real-Time Spatial-Division Multiplexing Transmission with Commercial 400 Gb/s Transponders
by Yuyang Gao, Juhao Li, Yu Tang, Lei Shen, Xian Zhou, Chunxu Zhao, Shikui Shen, Lei Zhang, Xiongyan Tang and Zhangyuan Chen
Photonics 2024, 11(3), 231; https://doi.org/10.3390/photonics11030231 - 2 Mar 2024
Viewed by 711
Abstract
As single-mode-fiber transmission systems are reaching their capacity limits, spatial-division multiplexing (SDM) techniques have been investigated to increase the per-fiber capacity. However, the compatibility with current single-mode transponders severely hinders the near-term deployment of SDM systems. In this paper, we experimentally propose two [...] Read more.
As single-mode-fiber transmission systems are reaching their capacity limits, spatial-division multiplexing (SDM) techniques have been investigated to increase the per-fiber capacity. However, the compatibility with current single-mode transponders severely hinders the near-term deployment of SDM systems. In this paper, we experimentally propose two real-time SDM transmission schemes using commercial single-mode 400 G dual-polarized 16 quadrature amplitude modulation equipment. In the first experiment, 60 km weakly coupled single-mode 7-core fiber with a pair of fan-in and fan-out devices are adopted. In the second experiment, the fiber link consists of 60 km/150 km weakly coupled few-mode fiber (FMF) and low-modal-crosstalk mode multiplexers, in which only non-degenerate LP01 and LP02 modes are utilized. In order to investigate the effect of splice on SDM fiber links, 20-roll, 3 km multicore fibers (MCFs) and FMFs are spliced and tested in the experiments. The bit error rates of all SDM experiments are all below 4.75 × 10−2 forward-error-correction threshold of the 400 G transponders. The experimental results prove that the near-term deployment of SDM systems could be accelerated by utilizing weakly coupled MCFs or non-degenerate modes of weakly coupled FMFs which are compatible with commercial single-mode transponders without any software or hardware modifications. Full article
(This article belongs to the Special Issue Emerging Technologies for 6G Space Optical Communication Networks)
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