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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 25, Iss. 8 — Aug. 1, 2007
  • pp: 2033–2043

Digital Equalization of Chromatic Dispersion and Polarization Mode Dispersion

Ezra Ip and Joseph M. Kahn

Journal of Lightwave Technology, Vol. 25, Issue 8, pp. 2033-2043 (2007)


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Abstract

In this paper, we consider a fractionally spaced equalizer (FSE) for electronic compensation of chromatic dispersion (CD) and polarization-mode dispersion (PMD) in a dually polarized (polarization-multiplexed) coherent optical communications system. Our results show that the FSE can compensate any arbitrary amount of CD and first-order PMD distortion, provided that the oversampling rate is at least 3/2 and that a sufficient number of equalizer taps are used. In contrast, the amount of CD and PMD that can be corrected by a symbol-rate equalizer only approaches an asymptotic limit, and increasing the number of taps has no effect on performance due to aliasing that causes signal cancellation and noise enhancement.

© 2007 IEEE

Citation
Ezra Ip and Joseph M. Kahn, "Digital Equalization of Chromatic Dispersion and Polarization Mode Dispersion," J. Lightwave Technol. 25, 2033-2043 (2007)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-25-8-2033


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