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Träfflista för sökning "WFRF:(Agrell Erik 1965 ) ;pers:(Wada Naoya)"

Sökning: WFRF:(Agrell Erik 1965 ) > Wada Naoya

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1.
  • Puttnam, Benjamin J., et al. (författare)
  • Characteristics of homogeneous multi-core fibers for SDM transmission
  • 2019
  • Ingår i: APL Photonics. - : AIP Publishing. - 2378-0967. ; 4:2
  • Tidskriftsartikel (refereegranskat)abstract
    • We describe optical data transmission systems using homogeneous, single-mode, multi-core fibers (MCFs). We first briefly discuss space-division multiplexing (SDM) fibers, observing that no individual SDM fiber offers overwhelming advantages over bundles of single-mode fiber (SMF) across all transmission regimes. We note that for early adoption of SDM fibers, uncoupled or weakly coupled fibers which are compatible with existing SDM infrastructure have a practical advantage. Yet, to be more attractive than parallel SMF, it is also necessary to demonstrate benefits beyond improved spatial spectral efficiency. It is hoped that the lower spread of propagation delays (skew) between spatial channels in some fibers can be exploited for improved performance and greater efficiency from hardware sharing and joint processing. However, whether these benefits can be practically harnessed and outweigh impairments or effort to mitigate cross talk between spatial channels is not yet clear. Hence, focusing on homogeneous MCFs, we first describe measurements and simulations on the impact of inter-core cross talk in such fibers before reporting experimental investigation into the spatial channel skew variation with a series of the experimental results including a comparison with SMF in varying environmental conditions. Finally, we present some system and transmission experiments using parallel recirculating loops that enable demonstration of both multi-dimensional modulation and joint digital processing techniques across three MCF cores. Both techniques lead to increased transmission reach but highlight the need for further experimental analysis to properly characterize the potential benefits of correlated propagation delays in such fibers.
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2.
  • Rademacher, Georg, et al. (författare)
  • 159 Tbit/s C+L Band Transmission over 1045 km 3-Mode Graded-Index Few-Mode Fiber
  • 2018
  • Ingår i: 2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings.
  • Konferensbidrag (refereegranskat)abstract
    • We transmit 3 x348 x 24.5 Gbaud PDM-16-QAM modulated C+L band channels with a total data-rate of over 159 Tbit/s over 1045 km graded-index three-mode fiber, resulting in a record throughput-distance product of more than 166 Pbit/sxkm.
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