Abstract
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 language | English |
|---|---|
| Pages (from-to) | 1091-1094 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 25 |
| Issue number | 12 |
| Early online date | 2 Apr 2013 |
| DOIs | |
| Publication status | Published - 15 Jun 2013 |
Bibliographical note
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- differential mode delay (DMD)
- few mode fibers (FMFs)
- modal crosstalk (XT)
- mode dependent losses (MDL)