Author :
Yu, Jianjun ; Dong, Ze ; Chien, Hung-Chang ; Jia, Zhensheng ; Huo, Di ; Yi, Hong ; Li, Meng ; Ren, Zhiliang ; Lu, Nan ; Xie, Li ; Liu, Kai ; Zhang, Xiaochao ; Xia, Yan ; Cai, Yao ; Gunkel, Matthias ; Wagner, Paul ; Mayer, Heinz ; Schippel, Achim
Abstract :
We have achieved the first ever field transmission of 8×216.4 Gb/s Nyquist-WDM signals over 1750-km G.652 fiber consisting of 950km field-deployed and 800km lab fibers with 21.6-dB average loss per span and EDFA-only amplification. Each channel is 54.2-Gbaud (216.4-Gbit/s) PDM-CSRZ-QPSK signal on 50-GHz grid with a record spectral efficiency of 4b/s/Hz. The digital post filter and 1-bit MLSE are introduced at the receiver DSP to suppress noise, linear crosstalk and filtering effects.
Keywords :
optical communication; optical crosstalk; optical filters; optical losses; quadrature phase shift keying; wavelength division multiplexing; EDFA-only amplification; PDM-CSRZ-QPSK; average loss per span; digital post filter; distance 1750 km; field transmission; field trial Nyquist-WDM transmission; filtering effects; linear crosstalk; noise suppression; spectral efficiency; Bit error rate; Optical fiber networks; Optical fiber polarization; Optical filters; Optical receivers;
