High Spectral Efficiency 400 Gb/s Transmission by Different Modulation Formats and Advanced DSP

Miao Kong; Xinying Li; Jiao Zhang; Kaihui Wang; Xiangjun Xin; Feng Zhao; Jianjun Yu

doi:10.1109/JLT.2019.2932384

High Spectral Efficiency 400 Gb/s Transmission by Different Modulation Formats and Advanced DSP

Miao Kong, Xinying Li, Jiao Zhang, Kaihui Wang, Xiangjun Xin, Feng Zhao, Jianjun Yu^*

^*此作品的通讯作者

科研成果: 期刊稿件 › 文章 › 同行评审

34 引用（Scopus）

摘要

We experimentally demonstrate probabilistically shaped 64-ary quadrature-amplitude-modulation (64QAM) 50-GHz-grid wavelength-division-multiplexing (WDM) transmission with a bit rate of 400-Gbit/s per channel over 3,600-km Raman-amplified ultra-large effective area fiber (ULAF). Our results show that the probabilistically shaped 64QAM outperforms the hybrid-32/64QAM by 50% reach improvement. Thanks to pre-equalization and look-up-table pre-distortion, a 5.5-dB optical signal-to-noise ratio (OSNR) gain can be obtained. Furthermore, utilizing ULAF with Raman amplifier causes an apparent improvement on the transmission performance compared with using the SSMF with EDFA. We also compare the optical coupler with the wavelength selective switch utilized in the WDM system to explore a suitable way for WDM transmission. Advanced DSP including Butterworth low-pass digital filter is also used at the receiver end.

源语言	英语
文章编号	8784236
页（从-至）	5317-5325
页数	9
期刊	Journal of Lightwave Technology
卷	37
期	20
DOI	https://doi.org/10.1109/JLT.2019.2932384
出版状态	已出版 - 15 10月 2019
已对外发布	是

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title = "High Spectral Efficiency 400 Gb/s Transmission by Different Modulation Formats and Advanced DSP",

abstract = "We experimentally demonstrate probabilistically shaped 64-ary quadrature-amplitude-modulation (64QAM) 50-GHz-grid wavelength-division-multiplexing (WDM) transmission with a bit rate of 400-Gbit/s per channel over 3,600-km Raman-amplified ultra-large effective area fiber (ULAF). Our results show that the probabilistically shaped 64QAM outperforms the hybrid-32/64QAM by 50% reach improvement. Thanks to pre-equalization and look-up-table pre-distortion, a 5.5-dB optical signal-to-noise ratio (OSNR) gain can be obtained. Furthermore, utilizing ULAF with Raman amplifier causes an apparent improvement on the transmission performance compared with using the SSMF with EDFA. We also compare the optical coupler with the wavelength selective switch utilized in the WDM system to explore a suitable way for WDM transmission. Advanced DSP including Butterworth low-pass digital filter is also used at the receiver end.",

keywords = "Hybrid quadrature-amplitude-modulation (hybrid-QAM), look-up-table (LUT) pre-distortion, optical coupler, pre-equalization, probabilistic shaping, ultra large effective area fiber (ULAF)",

author = "Miao Kong and Xinying Li and Jiao Zhang and Kaihui Wang and Xiangjun Xin and Feng Zhao and Jianjun Yu",

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doi = "10.1109/JLT.2019.2932384",

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AU - Kong, Miao

AU - Li, Xinying

AU - Zhang, Jiao

AU - Wang, Kaihui

AU - Xin, Xiangjun

AU - Zhao, Feng

AU - Yu, Jianjun

PY - 2019/10/15

Y1 - 2019/10/15

N2 - We experimentally demonstrate probabilistically shaped 64-ary quadrature-amplitude-modulation (64QAM) 50-GHz-grid wavelength-division-multiplexing (WDM) transmission with a bit rate of 400-Gbit/s per channel over 3,600-km Raman-amplified ultra-large effective area fiber (ULAF). Our results show that the probabilistically shaped 64QAM outperforms the hybrid-32/64QAM by 50% reach improvement. Thanks to pre-equalization and look-up-table pre-distortion, a 5.5-dB optical signal-to-noise ratio (OSNR) gain can be obtained. Furthermore, utilizing ULAF with Raman amplifier causes an apparent improvement on the transmission performance compared with using the SSMF with EDFA. We also compare the optical coupler with the wavelength selective switch utilized in the WDM system to explore a suitable way for WDM transmission. Advanced DSP including Butterworth low-pass digital filter is also used at the receiver end.

AB - We experimentally demonstrate probabilistically shaped 64-ary quadrature-amplitude-modulation (64QAM) 50-GHz-grid wavelength-division-multiplexing (WDM) transmission with a bit rate of 400-Gbit/s per channel over 3,600-km Raman-amplified ultra-large effective area fiber (ULAF). Our results show that the probabilistically shaped 64QAM outperforms the hybrid-32/64QAM by 50% reach improvement. Thanks to pre-equalization and look-up-table pre-distortion, a 5.5-dB optical signal-to-noise ratio (OSNR) gain can be obtained. Furthermore, utilizing ULAF with Raman amplifier causes an apparent improvement on the transmission performance compared with using the SSMF with EDFA. We also compare the optical coupler with the wavelength selective switch utilized in the WDM system to explore a suitable way for WDM transmission. Advanced DSP including Butterworth low-pass digital filter is also used at the receiver end.

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High Spectral Efficiency 400 Gb/s Transmission by Different Modulation Formats and Advanced DSP

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