基于光学可调色散的三角波产生方法

发布时间：2018-05-02 15:38

本文选题：微波光子 + 可调色散补偿器(TDC)　；参考：《光电子·激光》2016年12期

【摘要】：提出一种基于光学可调色散的三角波信号光学产生方案,并进行了实验验证。本振信号驱动双电极Mach-Zehnder调制器(DE-MZM)的一臂,对连续波(CW)激光进行调制,产生各阶光边带,通过合理设置DE-MZM的直流偏压点,并利用可调色散补偿器(TDC)对光信号引入一定的移相,光电探测后可以得到与本振(LO,local oscillator)信号重复率相等的三角波信号。通过简单地改变LO信号频率,得到的三角波信号重复率也相应发生变化。在实验中,利用本文方案分别得到了重复率为5GHz和6GHz的三角波信号。本文方案结构简单,频率调谐灵活,利用现有商用光电器件,预期能够得到重复率高达40GHz的三角波信号,可满足未来高频电子系统的应用需求。
[Abstract]:An optical generation scheme for triangular wave signals based on optical adjustable dispersion is proposed and verified by experiments. The local oscillator signals drive one arm of the two-electrode Mach-Zehnder modulator DE-MZM, and modulate the CW CW laser to produce each order optical sideband. By reasonably setting the DC bias point of the DE-MZM, and using the adjustable dispersion compensator to introduce a certain phase shift to the optical signal, The triangular wave signal with the same repetition rate as the local oscillator signal can be obtained by photoelectric detection. By simply changing the frequency of Lo signal, the repetition rate of triangle wave signal is changed accordingly. In the experiment, the triangle wave signals with repetition rate of 5GHz and 6GHz are obtained by using the scheme in this paper. In this paper, the scheme is simple, the frequency tuning is flexible, and the triangle wave signal with repetition rate up to 40GHz can be obtained by using the existing commercial optoelectronic devices, which can meet the application needs of the future high-frequency electronic system.
【作者单位】：西北工业大学动力与能源学院;西北大学信息科学与技术学院;
【分类号】：TM935

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