Radio-frequency self-interference cancellation using a dual-drive Mach–Zehnder modulator and a fiber Bragg grating
作者: Beiyue WengMengxu ChangYang Chen
作者单位: 1East China Normal University
刊名: Optical Engineering, 2018, Vol.57 (8), pp.083107-083107
来源数据库: SPIE-the International Society for Optical Engineering
DOI: 10.1117/1.OE.57.8.083107
关键词: Self-interference cancellationMicrowave photonicsIn-band full-duplex radio-over-fiber systemDual-drive Mach–Zehnder modulator
原始语种摘要: 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,...
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  • cancellation 熄灭
  • grating 筛分
  • modulator 灯器
  • drive 驱动
  • interference 干涉
  • fiber 纤维
  • transmitter 发射机
  • received 接收
  • photonics 光子学
  • tapped 抽头