Generation of Square or Hexagonal 16-QAM Signals Using a Dual-Drive IQ Modulator Driven by Binary Signals

Shuangyi Yan, Xuan Weng, Yuliang Gao, Chao Lu, Alan Pak Tao Lau, Yu Ji, Lei Liu, Xiaogeng Xu

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

We propose a simple square or hexagonal 16-QAM signal generation technique using a commercially available dual-drive IQ modulator driven by four binary electrical signals with properly designed amplitudes. We analytically derive the required driving signal amplitudes for square and hexagonal 16-QAM and characterize its implementation penalty. Polarization-multiplexed (PM)-16-QAM signals at 28 Gbuad are experimentally demonstrated and stable performance is achieved with simple bias control.
Original languageEnglish
Pages (from-to)29023-29034
Number of pages12
JournalOptics Express
Volume20
Issue number27
DOIs
Publication statusPublished - 17 Dec 2012

Keywords

  • Fiber optics communications
  • Modulation

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