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7-Tb/s (7\times1.284~{\rm Tb}/{\rm s}/{\rm ch}) Signal Transmission Over 320 km Using PDM-64QAM Modulation

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5 Author(s)
Jianjun Yu ; Sch. of IT, Fudan Univ., Shanghai, China ; Ze Dong ; Hung-Chang Chien ; Yufeng Shao
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We have transmitted a 7×1.284 Tb/s/ch signal over 320-km conventional single mode fiber (SMF-28) with hybrid amplifier spans of 80 km. Each terabit superchannel comprises ten Nyquist wavelength division multiplexing polarization division multiplexing 64 quadrature amplitude modulation subchannels occupying 137.5 GHz, which gives a spectral-efficiency of 7.65 b/s/Hz per superchannel. The bit error ratio of all channels after transmission over 320 km is measured smaller than 2×10-2, the soft-decision forward error correction limit.

Published in:

Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 4 )