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2000 km DWDM Transmission of 85.2 Gbit/s DQPSK Data with 100 GHz Channel Spacing over Non-Zero Dispersion Shifted Fiber

24 September 2006

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We demonstrate WDM transmission of 85.2 Gbit/s DQPSK signals with 100 GHz channel spacing in a recirculating loop with 5×100 km NZDSF spans and hybrid Raman/EDFA amplification. Bit error rates below 1·10-3 are obtained after 2000 km transmission.