Open AccessFiber nonlinearity pre- and post-compensation for long-haul optical links using OFDM
Author(s) -
Arthur J. Lowery
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.012965
Subject(s) - orthogonal frequency division multiplexing , optics , compensation (psychology) , transmitter , dispersion (optics) , optical fiber , dispersion shifted fiber , single mode optical fiber , optical power , wavelength division multiplexing , polarization mode dispersion , nonlinear system , self phase modulation , physics , telecommunications , computer science , fiber optic sensor , nonlinear optics , wavelength , psychology , laser , channel (broadcasting) , quantum mechanics , psychoanalysis
The nonlinear power limit of optical links using optical Orthogonal Frequency Division Multiplexing (OFDM) for dispersion compensation can be significantly improved using an optimum combination of nonlinearity precompensation and postcompensation. The compensation is implemented at the transmitter and at the receiver as computationally-efficient power-dependent phase shifts with a single tuning parameter. The system is robust against the exact details of the fiber plant's dispersion and power levels. Using an optimum combination of pre and post compensation allows a 2-dB increase in launch power for 2000-km standard single-mode fiber (S-SMF) systems and 5-dB when 6 ps/nm/km fibers are used. Using pre or post compensation alone approximately halves these values.