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首页> 美国卫生研究院文献>Scientific Reports >Spatial Division Multiplexed Microwave Signal processing by selective grating inscription in homogeneous multicore fibers
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Spatial Division Multiplexed Microwave Signal processing by selective grating inscription in homogeneous multicore fibers

机译：均质多芯光纤中通过选择性光栅刻写的空分复用微波信号处理

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摘要

The use of Spatial Division Multiplexing for Microwave Photonics signal processing is proposed and experimentally demonstrated, for the first time to our knowledge, based on the selective inscription of Bragg gratings in homogeneous multicore fibers. The fabricated devices behave as sampled true time delay elements for radiofrequency signals offering a wide range of operation possibilities within the same optical fiber. The key to processing flexibility comes from the implementation of novel multi-cavity configurations by inscribing a variety of different fiber Bragg gratings along the different cores of a 7-core fiber. This entails the development of the first fabrication method to inscribe high-quality gratings characterized by arbitrary frequency spectra and located in arbitrary longitudinal positions along the individual cores of a multicore fiber. Our work opens the way towards the development of unique compact fiber-based solutions that enable the implementation of a wide variety of 2D (spatial and wavelength diversity) signal processing functionalities that will be key in future fiber-wireless communications scenarios. We envisage that Microwave Photonics systems and networks will benefit from this technology in terms of compactness, operation versatility and performance stability.
机译：根据对均匀多芯光纤中Bragg光栅的选择性铭记，我们首次了解了空间分割多路复用技术在微波光子信号处理中的应用并通过实验证明了这一点。所制造的设备表现为射频信号的采样真实延时元件，在同一根光纤内提供了广泛的操作可能性。处理灵活性的关键来自于通过沿着7芯光纤的不同纤芯刻写各种不同的光纤布拉格光栅来实现新颖的多腔配置。这就需要开发第一种制造方法，以刻画出具有任意频谱特征并且沿着多芯光纤的各个纤芯位于任意纵向位置的高质量光栅。我们的工作为开发独特的紧凑型基于光纤的解决方案开辟了道路，该解决方案能够实现各种2D（空间和波长分集）信号处理功能，这些功能将在未来的光纤无线通信场景中发挥关键作用。我们设想微波光子学系统和网络将从紧凑性，操作多功能性和性能稳定性方面受益于该技术。

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