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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 4 — Feb. 24, 2014
  • pp: 4247–4255

Equalizer tap length requirement for mode group delay-compensated fiber link with weakly random mode coupling

Neng Bai and Guifang Li  »View Author Affiliations

Optics Express, Vol. 22, Issue 4, pp. 4247-4255 (2014)

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The equalizer tap length requirement is investigated analytically and numerically for differential modal group delay (DMGD) compensated fiber link with weakly random mode coupling. Each span of the DMGD compensated link comprises multiple pairs of fibers which have opposite signs of DMGD. The result reveals that under weak random mode coupling, the required tap length of the equalizer is proportional to modal group delay of a single DMGD compensated pair, instead of the total modal group delay (MGD) of the entire link. By using small DMGD compensation step sizes, the required tap length (RTL) can be potentially reduced by 2 orders of magnitude.

© 2014 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.4230) Fiber optics and optical communications : Multiplexing

ToC Category:
Optical Communications

Original Manuscript: November 12, 2013
Revised Manuscript: December 31, 2013
Manuscript Accepted: January 27, 2014
Published: February 18, 2014

Neng Bai and Guifang Li, "Equalizer tap length requirement for mode group delay-compensated fiber link with weakly random mode coupling," Opt. Express 22, 4247-4255 (2014)

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