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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 9 — May. 6, 2013
  • pp: 10801–10809

Impact of power allocation strategies in long-haul few-mode fiber transmission systems

Danish Rafique, Stylianos Sygletos, and Andrew D. Ellis  »View Author Affiliations


Optics Express, Vol. 21, Issue 9, pp. 10801-10809 (2013)
http://dx.doi.org/10.1364/OE.21.010801


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Abstract

We report for the first time on the limitations in the operational power range of few-mode fiber based transmission systems, employing 28Gbaud quadrature phase shift keying transponders, over 1,600km. It is demonstrated that if an additional mode is used on a preexisting few-mode transmission link, and allowed to optimize its performance, it will have a significant impact on the pre-existing mode. In particular, we show that for low mode coupling strengths (weak coupling regime), the newly added variable power mode does not considerably impact the fixed power existing mode, with performance penalties less than 2dB (in Q-factor). On the other hand, as mode coupling strength is increased (strong coupling regime), the individual launch power optimization significantly degrades the system performance, with penalties up to ~6dB. Our results further suggest that mutual power optimization, of both fixed power and variable power modes, reduces power allocation related penalties to less than 3dB, for any given coupling strength, for both high and low differential mode delays.

© 2013 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(060.4256) Fiber optics and optical communications : Networks, network optimization

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 3, 2012
Revised Manuscript: December 3, 2012
Manuscript Accepted: December 22, 2012
Published: April 25, 2013

Citation
Danish Rafique, Stylianos Sygletos, and Andrew D. Ellis, "Impact of power allocation strategies in long-haul few-mode fiber transmission systems," Opt. Express 21, 10801-10809 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-9-10801


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