WDM transmission of 152-Gb/s polarization multiplexed RZ-16QAM signals with 25-GHz channel spacing over 15×80-km of SSMF

We demonstrate transmission of 20×152-Gb/s PolMux-RZ-16QAM at a channel spacing of 25 GHz (5.68 b/s/Hz) over 15×80-km spans of SSFM. Coherent detection was used to recover the transmitted data and we achieved BER below 3.8×10<sup>−3</sup>.

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