Phase-conjugated pilots for fibre nonlinearity compensation in CO-OFDM transmission


In this paper, we demonstrate a novel fiber nonlinearity compensation technique for coherent optical orthogonal frequency-division multiplexing (CO-OFDM) systems based on the transmission of phase-conjugated pilots (PCPs). In this scheme, a portion of OFDM subcarriers (up to 50%) is transmitted with its phase conjugates, which is used at the receiver to estimate the nonlinear distortions in the respective subcarriers and other subcarriers, which are not accompanied by PCPs. Simulation and experimental results show that by varying the PCP overhead, a performance improvement up to 4 dB can be achieved. In addition, the proposed technique can be effectively applied in both single polarization and polarization-division multiplexed systems, in both single channel and wavelength-division multiplexing systems, thus, offering highest flexibility in implementations.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences > Systems analytics research institute (SARI)
Additional Information: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Funding: Sterlite Technologies and Finisar; European Commission (258033 (MODE-GAP), 318415 (FOX-C)); EPSRC (EP/J017582/1, EP/L000091/1).
Uncontrolled Keywords: coherent detection,coherent optical transmission,Nonlinearity mitigation,orthogonal frequency division multiplexing,Atomic and Molecular Physics, and Optics
Publication ISSN: 0733-8724
Last Modified: 26 Jan 2024 08:05
Date Deposited: 19 Aug 2015 14:00
Full Text Link: http://ieeexplo ... rnumber=7005402
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://gateway. ... 000351351300006 (Related URL)
PURE Output Type: Article
Published Date: 2015-04-01
Published Online Date: 2015-03-09
Authors: Le, Thai Son (ORCID Profile 0000-0002-3824-9456)
McCarthy, Mary E. (ORCID Profile 0000-0002-1348-1574)
Suibhne, Naoise Mac
Ellis, Andrew D. (ORCID Profile 0000-0002-0417-0547)
Turitsyn, Sergei K. (ORCID Profile 0000-0003-0101-3834)



Version: Accepted Version

Export / Share Citation


Additional statistics for this record