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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 26 — Dec. 12, 2011
  • pp: B40–B46

Impact of longitudinal power budget in coherent transmission systems employing digital back-propagation

Danish Rafique and Andrew D. Ellis  »View Author Affiliations


Optics Express, Vol. 19, Issue 26, pp. B40-B46 (2011)
http://dx.doi.org/10.1364/OE.19.000B40


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Abstract

We report the impact of longitudinal signal power profile on the transmission performance of coherently-detected 112 Gb/s m-ary polarization multiplexed quadrature amplitude modulation system after compensation of deterministic nonlinear fibre impairments. Performance improvements up to 0.6 dB (Qeff) are reported for a non-uniform transmission link power profile. Further investigation reveals that the evolution of the transmission performance with power profile management is fully consistent with the parametric amplification of the amplified spontaneous emission by the signal through four-wave mixing. In particular, for a non-dispersion managed system, a single-step increment of 4 dB in the amplifier gain, with respect to a uniform gain profile, at ~2/3rd of the total reach considerably improves the transmission performance for all the formats studied. In contrary a negative-step profile, emulating a failure (gain decrease or loss increase), significantly degrades the bit-error rate.

© 2011 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers

ToC Category:
Subsystems for Optical Networks

History
Original Manuscript: September 13, 2011
Revised Manuscript: October 19, 2011
Manuscript Accepted: October 19, 2011
Published: November 16, 2011

Virtual Issues
European Conference on Optical Communication 2011 (2011) Optics Express

Citation
Danish Rafique and Andrew D. Ellis, "Impact of longitudinal power budget in coherent transmission systems employing digital back-propagation," Opt. Express 19, B40-B46 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-26-B40


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References

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