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A flexible multi-16QAM transmitter based on cascaded dual-parallel Mach-Zehnder modulator and phase modulator

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Abstract

In this paper, we propose a novel and flexible 16-quadrature amplitude modulation (16QAM) transmitter based on cascaded dual-parallel Mach-Zehnder modulator (DPMZM) and phase modulator (PM). The proposed transmitter is able to generate three types of 16QAM signals: square 16QAM, star 16QAM and four-amplitude-four-phase-16-QAM (FAFP-16QAM). The feasibility of the transmitter is verified through experiment, 20-Gb/s eye diagrams of the 16QAM signals are obtained. In order to evaluate the performances of the 16QAM signals, simulations are also conducted using VPI Transmission Maker, clear constellations of 40-Gb/s 16QAM signals are achieved by coherent detection.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

    Liang Zhang, XiaoFeng Hu, Pan Cao, ZhiMing Zhuang, XinHong Jiang & YiKai Su

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  1. Liang Zhang
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  2. XiaoFeng Hu
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  3. Pan Cao
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  4. ZhiMing Zhuang
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  5. XinHong Jiang
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  6. YiKai Su
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Correspondence to YiKai Su.

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Zhang, L., Hu, X., Cao, P. et al. A flexible multi-16QAM transmitter based on cascaded dual-parallel Mach-Zehnder modulator and phase modulator. Sci. China Technol. Sci. 56, 598–602 (2013). https://doi.org/10.1007/s11431-012-5115-z

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  • DOI: https://doi.org/10.1007/s11431-012-5115-z

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