Reach improvement of mode division multiplexed systems using fiber splices

Filipe Ferreira, Daniel Fonseca, Adriana Lobato, Beril Inan, Henrique Silva

Research output: Contribution to journalArticlepeer-review


This letter proposes the introduction of discrete modal crosstalk (XT) through fiber splices for the improvement of the distance reach (DR) of mode division multiplexed (MDM) transmission systems over few mode fibers (FMFs). The proposed method increases the DR, reducing the time spread of the FMFs' impulse response. The effectiveness of this method is assessed through simulation considering 3 × 136-Gbit/s MDM-coherently-detected polarization-multiplexed quadrature-phase-shift-keying ultralong haul transmission systems employing inherently low differential mode delay (DMD) FMFs or DMD compensated FMFs. A maximum DR increase factor of 1.9 is obtained for the optimum number of splices per span and optimum splice XT level.

Original languageEnglish
Pages (from-to)1091-1094
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number12
Early online date2 Apr 2013
Publication statusPublished - 15 Jun 2013

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  • differential mode delay (DMD)
  • few mode fibers (FMFs)
  • modal crosstalk (XT)
  • mode dependent losses (MDL)


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