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Fiber Nonlinearity Mitigation in Optical Links That Use OFDM for Dispersion Compensation

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1 Author(s)
Lowery, A.J. ; Monash Univ., Clayton

The nonlinear power limit of optical links using optical orthogonal frequency division multiplexing for dispersion compensation can be significantly improved using a simple and computationally efficient nonlinearity precompensation technique that requires no additional optical components. Simulations show that a 2-dB increase in transmission power is possible for 6 ps/nm/km fibers in a 4000-km system, and this increases to >4 dB for 2 ps/nm/km fibers. Alternatively, the bit error ratio can be substantially reduced with precompensation when the systems are operated at an optimum power. Only a single tuning parameter is used to represent the whole link, and the system is robust against variations in this parameter.

Published in:

Photonics Technology Letters, IEEE  (Volume:19 ,  Issue: 19 )