11$\,\times\,$ 224-Gb/s POLMUX-RZ-16QAM Transmission Over 670 km of SSMF With 50-GHz Channel Spacing

We demonstrate the generation and transmission of 11 channels with 224-Gb/s polarization-multiplexed return-to-zero 16-level quadrature amplitude modulation over 670 km of standard single-mode fiber (SSMF) with 50-GHz channel spacing and a spectral efficiency of 4.2 b/s/Hz. We report a penalty of around 4.3 dB in the performance at back-to-back in comparison to the theoretical limits, and a margin of 1 dB in Q-factor below the forward-error correction limit (assumed to be at a bit-error rate of 3.8 × 10-3) after transmission over 670 km of SSMF.

[1]  Ting Wang,et al.  32Tb/s (320×114Gb/s) PDM-RZ-8QAM transmission over 580km of SMF-28 ultra-low-loss fiber , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[2]  T. Duthel,et al.  Coherent Equalization and POLMUX-RZ-DQPSK for Robust 100-GE Transmission , 2008, Journal of Lightwave Technology.

[3]  M. Magarini,et al.  Spectrally Efficient Long-Haul Optical Networking Using 112-Gb/s Polarization-Multiplexed 16-QAM , 2010, Journal of Lightwave Technology.

[4]  P. J. Winzer,et al.  56-Gbaud PDM-QPSK: coherent detection and 2,500-km transmission , 2009, 2009 35th European Conference on Optical Communication.

[5]  M. O'Sullivan,et al.  Performance of Dual-Polarization QPSK for Optical Transport Systems , 2009, Journal of Lightwave Technology.

[6]  R. Noe,et al.  Hardware-Efficient Coherent Digital Receiver Concept With Feedforward Carrier Recovery for $M$ -QAM Constellations , 2009, Journal of Lightwave Technology.

[7]  A. Al Amin,et al.  Highly Spectrally Efficient DWDM Transmission at 7.0 b/s/Hz Using 8$\,\times\,$ 65.1-Gb/s Coherent PDM-OFDM , 2010, Journal of Lightwave Technology.

[8]  T. Kobayashi,et al.  69.1-Tb/s (432 × 171-Gb/s) C- and extended L-band transmission over 240 km Using PDM-16-QAM modulation and digital coherent detection , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[9]  B. Zhu,et al.  10 × 224-Gb/s WDM transmission of 28-Gbaud PDM 16-QAM on a 50-GHz grid over 1,200 km of fiber , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.