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Record-Low Spatial Mode Dispersion and Ultra-Low Loss Coupled Multi-Core Fiber for Ultra-Long-Haul Transmission

Journal of lightwave technology, 2017-02, Vol.35 (3), p.450-457 [Peer Reviewed Journal]

ISSN: 0733-8724 ;EISSN: 1558-2213 ;DOI: 10.1109/JLT.2016.2614000 ;CODEN: JLTEDG

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  • Title:
    Record-Low Spatial Mode Dispersion and Ultra-Low Loss Coupled Multi-Core Fiber for Ultra-Long-Haul Transmission
  • Author: Hayashi, Tetsuya ; Tamura, Yoshiaki ; Hasegawa, Takemi ; Taru, Toshiki
  • Subjects: Attenuation ; coupled MCF ; Coupled-core MCF ; MCF ; multi-core fibers ; Optical fiber cables ; Optical fiber communication ; Optical fiber dispersion ; Optical fibers ; Optical losses ; SDM ; space division multiplexing ; Underwater cables
  • Is Part Of: Journal of lightwave technology, 2017-02, Vol.35 (3), p.450-457
  • Description: Newly developed 125-μm-cladding coupled four-core fibers realized the record-low spatial mode dispersion (SMD) of 3.14 ± 0.17 ps/√km over C-band and the ultra-low attenuation of 0.158 dB/km at 1550 nm, both of which are the lowest ever reported among the optical fibers for the space-division multiplexed transmission. The SMD was observed to be proportional to the fiber bend curvature, i.e., inversely proportional to the bend radius, and the SMD of 3.14 ± 0.17 ps/√km was measured at the bending radius of ~31 cm. By assuming the 3.14-ps/√km SMD accumulation, the tap count of the multiple-input multiple-output digital signal processing for the crosstalk compensation is estimated to be only 63 taps for covering 99.99% power of the impulse response after 10 000-km propagation when the 25-GBaud (50-GHz sampling) is assumed. The present results demonstrate the strong applicability of the coupled multicore fiber to the ultralong-haul submarine transmission system.
  • Publisher: IEEE
  • Language: English
  • Identifier: ISSN: 0733-8724
    EISSN: 1558-2213
    DOI: 10.1109/JLT.2016.2614000
    CODEN: JLTEDG
  • Source: IEEE Open Access Journals
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