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Cost-Optimized Submarine Cables Using Massive Spatial Parallelism

Journal of lightwave technology, 2018-09, Vol.36 (18), p.3855-3865 [Peer Reviewed Journal]

ISSN: 0733-8724 ;EISSN: 1558-2213 ;DOI: 10.1109/JLT.2018.2841810 ;CODEN: JLTEDG

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  • Title:
    Cost-Optimized Submarine Cables Using Massive Spatial Parallelism
  • Author: Dar, Ronen ; Winzer, Peter J. ; Chraplyvy, A. R. ; Zsigmond, Szilard ; Huang, K.-Y ; Fevrier, Herve ; Grubb, Stephen
  • Subjects: Bandwidth ; Capacity ; cost ; Optical fiber cables ; Optical noise ; Signal to noise ratio ; space-division multiplexing ; submarine ; Transponders ; Underwater cables ; Underwater vehicles
  • Is Part Of: Journal of lightwave technology, 2018-09, Vol.36 (18), p.3855-3865
  • Description: We study the techno-economics of submarine systems constrained by a fixed electrical power supply. We show significant cost savings for high-capacity submarine systems using massive space-division multiplexing (SDM), even without assuming any savings from SDM-specific subsystem integration. Systems with about 100 parallel optical paths, e.g., ~50 fiber pairs are shown to provide minimum cost/bit, operating at reduced spectral efficiencies and deep within the linear regime. While advanced nonlinearity-optimized fibers and digital nonlinearity compensation schemes provide little to no gain in such systems, SDM integration of amplifiers and transponders is shown to be a source for significant additional cost savings. We further examine the permissible cost premium for multicore fibers in such massively parallel systems and revisit various design tradeoffs for optical amplifiers, showing that a reduced noise figure can be traded for better power conversion efficiency. We also evaluate potential gains from increasing the available electrical supply power and discuss reliability aspects of massively parallel submarine systems.
  • Publisher: IEEE
  • Language: English
  • Identifier: ISSN: 0733-8724
    EISSN: 1558-2213
    DOI: 10.1109/JLT.2018.2841810
    CODEN: JLTEDG
  • Source: IEEE Open Access Journals
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