基于单光频梳的卫星通信多频段变频方法

发布时间：2018-03-05 06:10

本文选题：光学器件　切入点：微波光子　出处：《光学学报》2017年06期 　论文类型：期刊论文

【摘要】：提出一种基于单光频梳的简单,灵活和稳定的变频方法。该方法使用了双偏振正交移相器,该调制器是一种集成调制器,集成了两个双平行马赫-曾德尔调制器(DPMZM),其中一个DPMZM作为光频梳产生器,另一个进行载波抑制单边带调制产生单边带信号。从该调制器输出的信号是一个正交的耦合信号,在偏振控制器和偏振片的控制下,被转化为一个具有固定偏振角的信号,最后送入光电探测器实现微波信号的产生。仿真结果表明,通过适当调整该集成调制器中6个直流偏置点和外接的移相器,可以实现多频段变频。比如C波段3.8GHz的信号可以被变频到X,Ku,K和Ka波段;X波段9.6GHz的信号可以被下变频到C波段同时也可以被上变频到Ku,K,Ka波段。除此之外,整个系统体现出对直流偏置点漂移的良好适应性,具有很好的可操作性。
[Abstract]:A single optical frequency comb is simple, flexible and stable frequency method. The method uses dual polarization quadrature phase shifter, the modulator is an integrated modulator, integrates two parallel Maher modulator (DPMZM), Del was one of the DPMZM as an optical frequency comb generator, another a single sideband suppressed carrier modulation sideband signal. The signal from the modulator output is coupled to a signal in the orthogonal polarization controller, and polarizer, is converted into a signal with a fixed polarization angle, and finally into the photoelectric detector to realize the generation of microwave signal. The simulation results show that the the integrated modulator 6 DC bias point and the external phase shifter by adjusting, can realize multi band frequency signal. For example, C band 3.8GHz can be converted to X, Ku, K and Ka band; X band 9.6GHz signal can be Frequency conversion to C band, at the same time, it can also be upconverted to Ku, K, Ka band. Besides, the whole system shows good adaptability to DC offset point drift, and has good operability.

【作者单位】：空军工程大学信息与导航学院;
【基金】：国家自然科学基金重点项目(61571461,61401502) 陕西省自然科学基金(2016JQ6008)
【分类号】：TN927.2

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