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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 14 — Jul. 4, 2011
  • pp: 12879–12884

Pulse-shaping versus digital backpropagation in 224Gbit/s PDM-16QAM transmission

Carsten Behrens, Sergejs Makovejs, Robert I. Killey, Seb J. Savory, Ming Chen, and Polina Bayvel  »View Author Affiliations


Optics Express, Vol. 19, Issue 14, pp. 12879-12884 (2011)
http://dx.doi.org/10.1364/OE.19.012879


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Abstract

We investigate the transmission performance of 224Gbit/s polarization-division-multiplexed 16-state quadrature amplitude modulation (PDM-16QAM) for systems employing standard single mode fiber (SSMF) and erbium doped fiber amplifiers (EDFAs). We consider the effectiveness of return-to-zero (RZ) data pulses with varying duty cycles and digital backpropagation (DBP) in reducing nonlinear distortion in wavelength-division- multiplexed (WDM) links with 3, 5, 7 and 9 channels. Similar improvement in transmission reach of 18-25% was achieved either by pulse-carving at the transmitter or by DBP, yielding maximum transmission distances of up to 1760km for RZ-pulse-shapes and 1280km for NRZ.

© 2011 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 31, 2011
Revised Manuscript: June 6, 2011
Manuscript Accepted: June 6, 2011
Published: June 20, 2011

Citation
Carsten Behrens, Sergejs Makovejs, Robert I. Killey, Seb J. Savory, Ming Chen, and Polina Bayvel, "Pulse-shaping versus digital backpropagation in 224Gbit/s PDM-16QAM transmission," Opt. Express 19, 12879-12884 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-14-12879


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References

  1. A. H. Gnauck, P. J. Winzer, S. Chandrasekhar, X. Liu, B. Zhu, and D. W. Peckham, “10 x 224-Gb/s WDM transmission of 28Gbaud PDM 16-QAM on a 50GHz grid over 1,200 km on fiber,” Proc. OFC/NFOEC 2010, paper PDPB8, San Diego, USA, (2010).
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  8. C. Behrens, R. I. Killey, S. J. Savory, M. Chen, and P. Bayvel, “Nonlinear distortion in transmission of higher order modulation formats,” IEEE Photon. Technol. Lett. 22(15), 1111–1113 (2010). [CrossRef]
  9. S. Makovejs, E. Torrengo, D. S. Millar, R. I. Killey, S. J. Savory, and P. Bayvel, “Comparison of pulse shapes in a 224Gbit/s (28Gbaud) PDM-QAM16 long-haul transmission experiment,” Proc. of OFC 2011, paper OMR5, San Diego, USA, (2011).
  10. S. Makovejs, D. S. Millar, D. Lavery, C. Behrens, R. I. Killey, S. J. Savory, and P. Bayvel, “Characterization of long-haul 112Gbit/s PDM-QAM-16 transmission with and without digital nonlinearity compensation,” Opt. Express 18(12), 12939–12947 (2010). [CrossRef] [PubMed]
  11. E. Ip, “Nonlinear compensation using backpropagation for polarization-multiplexed transmission,” J. Lightwave Technol. 28(6), 939–951 (2010). [CrossRef]

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