Journal
OPTICS EXPRESS
Volume 19, Issue 14, Pages 12879-12884Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.012879
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- Huawei Technologies
- Yokogawa Electric Corporation
- The Royal Society
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We investigate the transmission performance of 224Gbit/s polarization-division-multiplexed 16-state quadrature amplitude modulation (PDM-16QAM) for systems employing standard single mode fiber (SSMF) and erbium doped fiber amplifiers (EDFAs). We consider the effectiveness of return-to-zero (RZ) data pulses with varying duty cycles and digital backpropagation (DBP) in reducing nonlinear distortion in wavelength-division-multiplexed (WDM) links with 3, 5, 7 and 9 channels. Similar improvement in transmission reach of 18-25% was achieved either by pulse-carving at the transmitter or by DBP, yielding maximum transmission distances of up to 1760km for RZ-pulse-shapes and 1280km for NRZ. (C) 2011 Optical Society of America
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