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Experimental and Numerical Comparison of Probabilistically-Shaped 4096 QAM and Uniformly-Shaped 1024 QAM in All-Raman Amplified 160 km Transmission

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Abstract

We experimentally and numerically compared probabilistically-shaped 4096 QAM with uniformly-shaped 1024 QAM with a spectral efficiency of 15.3 bit/s/Hz after an all-Raman 160 km transmission. The 1.4-dB power margin was improved by constellation shaping.

© 2018 The Author(s)

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