30.7 Tb/s Transmission over 400 km using 40 WDM channels of DP-16 QAM and Raman amplification without inline repeaters

Optical Fiber Technology（2023）

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摘要

•Forty WDM channels of 96 Gbaud (768 Gb/s) were transmitted over 400 km of SMF using only a Raman amplifier.•Each WDM channel comprised eight electrical subcarriers.•16 QAM and DP modulation were applied to each subcarrier channel and so one data symbol carried eight bits.

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关键词

Optical coherent transmission,Quadrature amplitude modulation,Dual polarization modulation,Electrical subcarrier modulation

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