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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 21 — Oct. 8, 2012
  • pp: 23383–23389

512 QAM transmission over 240 km using frequency-domain equalization in a digital coherent receiver

Yuki Koizumi, Kazushi Toyoda, Tatsunori Omiya, Masato Yoshida, Toshihiko Hirooka, and Masataka Nakazawa  »View Author Affiliations

Optics Express, Vol. 20, Issue 21, pp. 23383-23389 (2012)

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We demonstrate a marked performance improvement in a 512 QAM transmission by employing frequency-domain equalization (FDE) instead of an FIR filter. FDE enables us to compensate for distortions due to hardware imperfections in the transmitter with higher precision, which successfully reduced the power penalty by 4 dB in a 54 Gbit/s (3 Gsymbol/s)-160 km transmission. FDE also allows the transmission distance to be extended up to 240 km.

© 2012 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 29, 2012
Revised Manuscript: September 4, 2012
Manuscript Accepted: September 9, 2012
Published: September 26, 2012

Yuki Koizumi, Kazushi Toyoda, Tatsunori Omiya, Masato Yoshida, Toshihiko Hirooka, and Masataka Nakazawa, "512 QAM transmission over 240 km using frequency-domain equalization in a digital coherent receiver," Opt. Express 20, 23383-23389 (2012)

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