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首页> 外文期刊>Optical engineering >Radio-frequency self-interference cancellation using a dual-drive Mach-Zehnder modulator and a fiber Bragg grating
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Radio-frequency self-interference cancellation using a dual-drive Mach-Zehnder modulator and a fiber Bragg grating

机译：使用双驱动Mach-Zehnder调制器和光纤布拉格光栅的射频自干扰消除

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摘要

A photonic-assisted radio-frequency (RF) self-interference cancellation (SIC) scheme for in-band full-duplex radio-over-fiber system is proposed based on a dual-drive Mach-Zehnder modulator (DD-MZM) and a fiber Bragg grating (FBG). The received signal with an interference from the transmitter is applied to one arm of the DD-MZM, and the reference signal tapped from the transmitter is injected into another arm of the DD-MZM. By properly controlling the amplitude and phase of the reference signal, and adjusting the bias point of the DD-MZM, the RF interference can be cancelled in the optical domain. An FBG is used to convert the phase-modulated received signal to an intensity-modulated signal for information recovery. Since the self-interference is cancelled directly in the optical domain, the proposed SIC scheme is suitable for long-distance fiber transmission. A simulation is performed, where a cancellation depth of more than 50 dB is achieved. The proposed SIC system features good transmission capability and frequency tunability, which is only limited by the bandwidths of the DD-MZM and the FBG.
机译：提出了一种基于双驱动Mach-Zehnder调制器（DD-MZM）和带内全双工光纤传输系统的光子辅助射频（RF）自干扰消除（SIC）方案。光纤布拉格光栅（FBG）。从发射器接收到的具有干扰的信号被施加到DD-MZM的一个分支，从发射器分接的参考信号被注入DD-MZM的另一个分支。通过适当控制参考信号的幅度和相位，并调整DD-MZM的偏置点，可以消除光域中的RF干扰。 FBG用于将相位调制的接收信号转换为强度调制的信号，以进行信息恢复。由于自干扰在光域中是直接抵消的，因此所提出的SIC方案适用于长距离光纤传输。执行仿真，可以实现超过50 dB的消除深度。所提出的SIC系统具有良好的传输能力和频率可调性，仅受DD-MZM和FBG的带宽限制。

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  • 来源
    《Optical engineering》 |2018年第8期|083107.1-083107.7|共7页
  • 作者

    Beiyue Weng; Mengxu Chang; Yang Chen;

  • 作者单位

    East China Normal University, School of Information Science and Technology, Shanghai, China;

    East China Normal University, School of Information Science and Technology, Shanghai, China;

    East China Normal University, School of Information Science and Technology, Shanghai, China,East China Normal University, Engineering Center of SHMEC for Space Information and GNSS, Shanghai, China,East China Normal University, Shanghai Key Laboratory of Multidimensional Information Processing, Shanghai, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    self-interference cancellation; microwave photonics; in-band full-duplex radio-over-fiber system; dual-drive Mach-Zehnder modulator;

    机译：自干扰消除;微波光子学带内全双工光纤无线电系统;双驱动马赫曾德尔调制器;

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