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High-level QAM OFDM system using DML for low-cost short reach optical communications

  • Fan Li
  • , Xinying Li
  • , Lin Chen
  • , Y. Xia
  • , C. Ge
  • , Y. Chen
  • Hunan University
  • ZTE Corporation
  • Fudan University
  • ZTE Corpoartion

科研成果: 期刊稿件文章同行评审

摘要

In this letter, we experimentally demonstrated a high level quadrature amplitude modulation (QAM) optical orthogonal frequency division multiplexing (OFDM) transmission system utilizing a cost-effective directly modulated laser. This experiment was enabled by intrasymbol frequency-domain averaging-based channel estimation, large fast Fourier transform size to enhance the resistance of intersymbol interference, and the discrete Fourier transform-spread technique to reduce peak-to-average power ratio. A 31.7-Gbit/s 2048QAM OFDM signal can be successfully transmitted over 20-km large effective area fiber under a 20% soft-decision forward-error-correction threshold (bit error rate of 2.4 × 10-2.

源语言英语
文章编号6758346
页(从-至)941-944
页数4
期刊IEEE Photonics Technology Letters
26
9
DOI
出版状态已出版 - 1 5月 2014
已对外发布

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