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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 31, Iss. 13 — Jul. 1, 2013
  • pp: 2146–2162

Transmission of High-Baud PDM-64QAM Signals

Wei-Ren Peng, Takehiro Tsuritani, and Itsuro Morita

Journal of Lightwave Technology, Vol. 31, Issue 13, pp. 2146-2162 (2013)


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Abstract

In this paper we demonstrate high-baud generation and transmission of PDM-64QAM signals. The 64QAM signal is generated using one single in-phase/quadrature (I/Q) modulator driven with eight-level signals synthesized by all binary electrical inputs. With hard-decision forward error correction (HD-FEC), we first demonstrate 11.2-GBd and 22.4-GBd PDM-64QAM transmissions over 320-km standard single mode fiber (SSMF). Then we specifically introduce a long memory filter (LMF) and prove its effectiveness in reflection compensation both theoretically and experimentally. With the aid of soft-decision FEC (SD-FEC), optical pre-shaping, and LMF, we transmit a 41.4-GBd PDM-64QAM signal over 1200-km SSMF. Finally, using per-channel 41.6-GBd PDM-64QAM with SD-FEC, we successfully demonstrate 50-GHz-spaced, 8 × 499-Gb/s transmission over 720-km SSMF. This is the first demonstration of400-Gb/s/ch WDM transmission on the 50-GHz ITU grid that uses a per-channel single-carrier scheme.

© 2013 IEEE

Citation
Wei-Ren Peng, Takehiro Tsuritani, and Itsuro Morita, "Transmission of High-Baud PDM-64QAM Signals," J. Lightwave Technol. 31, 2146-2162 (2013)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-31-13-2146

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