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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 9 — May. 5, 2014
  • pp: 10256–10261

Unrepeatered 256 Gb/s PM-16QAM transmission over up to 304 km with simple system configurations

John D. Downie, Jason Hurley, Ioannis Roudas, Dragan Pikula, and Jorge A. Garza-Alanis  »View Author Affiliations

Optics Express, Vol. 22, Issue 9, pp. 10256-10261 (2014)

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We study unrepeatered transmission of 40x256 Gb/s systems with polarization-multiplexed 16-quadrature amplitude modulation (PM-16QAM) channels using simple coherent optical system configurations. Three systems are investigated with either a homogeneous fiber span, or simple two-segment hybrid fiber designs. Each system relies primarily on ultra-low loss, very large effective area fiber, while making use of only first-order backward pumped Raman amplification and no remote optically pumped amplifier (ROPA). For the longest span studied, we demonstrate unrepeatered 256 Gb/s transmission over 304 km with the additional aid of nonlinear compensation using digital backpropagation. We find an average performance improvement in terms of the Q-factor of 0.45 dB by using digital backpropagation compared to the case of using chromatic dispersion compensation alone for an unrepeatered span system.

© 2014 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems

ToC Category:
Optical Communications

Original Manuscript: March 6, 2014
Revised Manuscript: April 3, 2014
Manuscript Accepted: April 5, 2014
Published: April 21, 2014

John D. Downie, Jason Hurley, Ioannis Roudas, Dragan Pikula, and Jorge A. Garza-Alanis, "Unrepeatered 256 Gb/s PM-16QAM transmission over up to 304 km with simple system configurations," Opt. Express 22, 10256-10261 (2014)

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