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Workshop proceeding - final.pdf - Faculty of Information and ...

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Improved Nonlinearity precompensation for Long-hual High-date-rate<br />

Transmission using Coherent Optical OFDM<br />

Liang B. Y. Du 1 * <strong>and</strong> Arthur J. Lowery 1<br />

1. Electrical <strong>and</strong> Computer Systems Engineering, Monash University, Clayton, VIC 3800,<br />

Australia<br />

We show that the performance <strong>of</strong> precompensation <strong>of</strong> fiber nonlinearity in coherent<br />

optical OFDM systems operating at up to 60 Gbps/ polarization can be improved by electrical<br />

filtering the precompensation signal. The optimal filter b<strong>and</strong>width is related to the FWM<br />

efficiency spectrum when dispersion is considered.<br />

165

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