1-Gsymbol/s 64-QAM Coherent Optical Transmission Over 150 km

  title={1-Gsymbol/s 64-QAM Coherent Optical Transmission Over 150 km},
  author={Jumpei Hongo and Keisuke Kasai and Masato Yoshida and Masataka Nakazawa},
  journal={IEEE Photonics Technology Letters},
Quadrature amplitude modulation (QAM) is an excellent modulation format for realizing optical communication systems with a high spectral efficiency of much greater than 1bit/s/Hz. We describe QAM coherent optical communication that we achieved by using heterodyne detection with a frequency-stabilized fiber laser and an optical phase-locked loop (OPLL) technique. The phase error variance of the intermediate frequency signal of the OPLL was 6.1times10-3 rad. A 1-Gsymbol/s 64-QAM coherent signal… CONTINUE READING
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Proposal of 8-state per symbol (binary ASK and QPSK) 30-Gbit/s optical modulation/demodulation scheme

  • S. Hayase, N. Kikuchi, K. Sekine, S. Sasaki
  • ECOC 2003, Rimini, Italy, 2003, Paper Th2.6.4.
  • 2003
2 Excerpts

Optical phase-locked loop using semiconductor laser diodes

  • R. C. Steele
  • Electron. Lett., vol. 19, no. 2, pp. 69–71, 1983.
  • 1983
1 Excerpt

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