TR2016-029

Design of a 1 Tb/s Superchannel Coherent Receiver


    •  Millar, D.S.; Koike-Akino, T.; Kojima, K.; Pajovic, M.; Parsons, K.; Paskov, M.; Maher, R.; Lavery, D.; Alvarado, A.; Thomsen, B.C.; Savory, S.J.; Bayvel, P., "Design of a 1 Tb/s Superchannel Coherent Receiver", Journal of Lightwave Technology, DOI: 10.1109/JLT.2016.2519260, ISSN: 0733-8724, Vol. 34, No. 6, pp. 1453-1463, March 2016.
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      • @article{Millar2016mar,
      • author = {Millar, D.S. and Koike-Akino, T. and Kojima, K. and Pajovic, M. and Parsons, K. and Paskov, M. and Maher, R. and Lavery, D. and Alvarado, A. and Thomsen, B.C. and Savory, S.J. and Bayvel, P.},
      • title = {Design of a 1 Tb/s Superchannel Coherent Receiver},
      • journal = {Journal of Lightwave Technology},
      • year = 2016,
      • volume = 34,
      • number = 6,
      • pages = {1453--1463},
      • month = mar,
      • doi = {10.1109/JLT.2016.2519260},
      • issn = {0733-8724},
      • url = {http://www.merl.com/publications/TR2016-029}
      • }
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  • Research Areas:

    Communications, Signal Processing


We describe the design of a trained and pilot-aided digital coherent receiver, capable of detecting a 1 Tb/s superchannel with a single optical front-end. Algorithms for receiver training are described, which calculate the equalizer coefficients, subchannel SNRs, and centroids of the transmitted constellations. Algorithms for pilot-aided operation are then described in detail, providing pilot-aided constant modulus equalization and joint carrier phase estimation over several coherent subchannels. We demonstrate detection of a superchannel with net bit rate in excess of 1 Tb/s with a single coherent receiver. An 11 10 GBd DP-64QAM Nyquist superchannel is used, with 1.32 Tb/s gross bit rate.