10 \times 224-Gb/s POLMUX-16QAM Transmission Over 656 km of Large- PSCF With a Spectral Efficiency of 5.6 b/s/Hz

• Published in: IEEE photonics technology letters Vol. 23; no. 20; pp. 1427 - 1429
• Main Authors: Sleiffer, V. A. J. M., Alfiad, M. S., van den Borne, D., Kuschnerov, M., Veljanovski, V., Hirano, M., Yamamoto, Y., Sasaki, T., Jansen, S. L., Wuth, T., de Waardt, H.
• Format: Journal Article
• Language: English
• Published: IEEE 15.10.2011
• Subjects: Bit error rate; Coherent detection; Modulation; Optical fiber amplifiers; Optical fiber dispersion; Optical fiber polarization; polarization multiplexing (POLMUX); quadrature amplitude modulation (QAM); Stimulated emission
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2011.2162722

The authors demonstrate the successful transmission of 10 channels with 224-Gb/s POLMUX-16QAM modulation (28 GBaud) on a 37.5-GHz wavelength grid. Using large-A eff pure-silica-core fibers they show a 656-km transmission distance with a spectral efficiency of 5.6 b/s/Hz. They report a back-to-back performance penalty of 3.5 dB compared to theoretical limits at the forward-error correction (FEC) limit (bit-error rate of 3.8·10 -3 ), and a margin of 0.5 dB in Q-factor with respect to the FEC limit after 656 km of transmission.