Enhanced Atmospheric Turbulence Resiliency With Successive Interference Cancellation DSP in Mode Division Multiplexing Free-Space Optical Links

Abstract

We experimentally demonstrate the enhanced atmospheric turbulence resiliency in a 137.8 Gbit/s/mode mode-division multiplexing free-space optical communication link through the application of a successive interference cancellation digital signal processing algorithm. The turbulence resiliency is further enhanced through redundant receive channels in the mode-division multiplexing link. The proof of concept demonstration is performed using commercially available mode-selective photonic lanterns, a commercial transponder, and a spatial light modulator based turbulence emulator. In this link, 5 spatial modes with each mode carrying 34.46 GBaud dual-polarization quadrature phase shift keying signals are successfully transmitted with an average bit error rate lower than the hard-decision forward error correction limit. As a result, we achieved a record-high mode- and polarization-division multiplexing channel number of 10, a record-high line rate of 689.23 Gbit/s, and a record-high net spectral efficiency of 13.9 b/s/Hz in emulated turbulent links in a mode-division multiplexing free-space optical system.

Publication DOI: https://doi.org/10.1109/jlt.2022.3209092
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: © 2022, IEEE. UKRI Rights Retention Statement: For the purpose of open access, the author has applied a Creative Commons Attribution (CC BY) licence to any Author Accepted Manuscript version arising. Research supported by EPSRC under grant numbers EP/T009047/1, EP/T009012/1, EP/S003436/1, and EP/S016171/1. Research supported by European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 713694, and Future and Emerging Technologies Open grant agreement Super-pixels No. 829116.
Uncontrolled Keywords: Mode division multiplexing (MDM),free-space optics (FSO),multiple-input multiple-output (MIMO),successive interference cancellation (SIC),turbulence
Publication ISSN: 0733-8724
Last Modified: 22 May 2024 16:23
Date Deposited: 19 Oct 2022 16:02
Full Text Link:
Related URLs: https://ieeexpl ... ocument/9906967 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2022-12-15
Published Online Date: 2022-09-30
Accepted Date: 2022-09-21
Authors: Li, Yiming (ORCID Profile 0000-0002-9442-2591)
Chen, Zhaozhong
Hu, Zhouyi (ORCID Profile 0000-0002-8891-6341)
Benton, David M. (ORCID Profile 0000-0003-0663-1404)
Ali, Abdallah A. I.
Patel, Mohammed
Lavery, Martin P. J.
Ellis, Andrew D. (ORCID Profile 0000-0002-0417-0547)

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