Analysis of chromatic dispersion compensation and carrier phase recovery in long-haul optical transmission system influenced by equalization enhanced phase noise

Tianhua Xu*, Gunnar Jacobsen, Sergei Popov, Jie Li, Sergey Sergeyev, Ari T. Friberg, Tiegen Liu, Yimo Zhang

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The performance of long-haul coherent optical fiber transmission system is significantly affected by the equalization enhanced phase noise (EEPN), due to the interaction between the electronic dispersion compensation (EDC) and the laser phase noise. In this paper, we present a comprehensive study on different chromatic dispersion (CD) compensation and carrier phase recovery (CPR) approaches, in the n-level phase shift keying (n-PSK) and the n-level quadrature amplitude modulation (n-QAM) coherent optical transmission systems, considering the impacts of EEPN. Four CD compensation methods are considered: the time-domain equalization (TDE), the frequency-domain equalization (FDE), the least mean square (LMS) adaptive equalization are applied for EDC, and the dispersion compensating fiber (DCF) is employed for optical dispersion compensation (ODC). Meanwhile, three carrier phase recovery methods are also involved: a one-tap normalized least mean square (NLMS) algorithm, a block-wise average (BWA) algorithm, and a Viterbi-Viterbi (VV) algorithm. Numerical simulations have been carried out in a 28-Gbaud dual-polarization quadrature phase shift keying (DP-QPSK) coherent transmission system, and the results indicate that the origin of EEPN depends on the choice of chromatic dispersion compensation methods, and the effects of EEPN also behave moderately different in accordance to different carrier phase recovery scenarios.
Original languageEnglish
Pages (from-to)494-508
Number of pages15
JournalOptik
Volume138
Early online date6 Mar 2017
DOIs
Publication statusPublished - Jun 2017

Bibliographical note

© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Funding: EPSRC (UNLOC EP/J017582/1); EC (FP7-PEOPLE-2012-IAPP, GRIFFON, No. 324391); and Swedish Research Council Vetenskapsradet (No. 0379801).

Keywords

  • carrier phase recovery
  • chromatic dispersion compensation
  • coherent optical detection
  • equalization enhanced phase noise
  • phase shift keying
  • quadrature amplitude modulation

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