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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 18 — Aug. 27, 2012
  • pp: 19921–19927

Fiber nonlinearity compensation for OFDM super-channels using optical phase conjugation

Liang B. Du, Mohammad Monir Morshed, and Arthur J. Lowery  »View Author Affiliations


Optics Express, Vol. 20, Issue 18, pp. 19921-19927 (2012)
http://dx.doi.org/10.1364/OE.20.019921


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Abstract

We experimentally demonstrate that mid-link optical phase conjugation (OPC) effectively compensates fiber nonlinearity in coherent optical OFDM super-channels. The OPC was produced by pump × subcarrier degenerate four-wave-mixing in a 1-km highly nonlinear fiber. The nonlinear threshold for the 10 × 80-km 604.7-Gb/s 16-QAM test system was increased by 4.8 dB. The performance at the optimum power was only improved by 0.2 dB because the OPC module produces a 1.6 dB penalty for the back-to-back system. FWM theory shows that the ‘noise’ processes of OPC modules utilizing χ3 nonlinearities could be reduced by increasing the pump power, which will improve back-to-back performance with the OPC module.

© 2012 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4080) Fiber optics and optical communications : Modulation
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5040) Nonlinear optics : Phase conjugation

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 6, 2012
Revised Manuscript: July 26, 2012
Manuscript Accepted: August 3, 2012
Published: August 15, 2012

Citation
Liang B. Du, Mohammad Monir Morshed, and Arthur J. Lowery, "Fiber nonlinearity compensation for OFDM super-channels using optical phase conjugation," Opt. Express 20, 19921-19927 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-18-19921


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