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

doi:10.1109/LPT.2014.2309660

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

科研成果: 期刊稿件 › 文章 › 同行评审

54 引用（Scopus）

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
卷	26
期	9
DOI	https://doi.org/10.1109/LPT.2014.2309660
出版状态	已出版 - 1 5月 2014
已对外发布	是

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AU - Li, Xinying

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AU - Ge, C.

AU - Chen, Y.

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AB - 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.

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

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