120 GBaud PAM-4/PAM-6 generation and Detection by Photonic Aided Digital-to-Analog Converter and Linear Equalization

Haiyun Xin, Deming Kong, Kuo Zhang, Shi Jia, Xiaoling Zhang, Weisheng Hu, Hao Hu

Research output: Contribution to journalJournal articleResearchpeer-review


In this paper, for the first time, we propose a photonic-aided digital-to-analog converter (PADAC) to break through transmitter-side bandwidth limitation in intensity modulation and direct detection (IM-DD) systems. By this method, bandwidth of receiver-side devices can be fully utilized, and nonlinear distortions in high-data-rate electrical signals are avoided. Experimental results indicate that, with only linear equalization, 120 GBaud PAM-4 and PAM-6 signals have been successfully generated and detected below 6.25%-OH HD-FEC and 20%-OH SD-FEC limits, respectively.
Original languageEnglish
JournalJournal of Lightwave Technology
Issue number8
Pages (from-to)2226 - 2230
Publication statusPublished - 2020


  • Optical interconnects
  • Photonic aided digital-to-analog converter
  • Pulse amplitude modulation
  • Intensity modulation and direct detection
  • Linear equalization

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