基于光相位锁定的载波可变光的毫米波产生技术

发布时间：2018-05-22 12:57

本文选题：光通信 + 光接入　；参考：《红外与毫米波学报》2014年05期

【摘要】：提出和实现了一种新型适用于光/无线混合接入的光子载微波产生方案.该方案利用直接调制分布反馈式半导体激光器可以产生宽谱信号的特点,将较低频率正弦信号直接调制半导体激光器,在半导体激光器中进行频谱展宽,然后把宽谱信号注入到多个半导体激光器中进行相位锁定从而作为相干锁定光源.用上述光源在不同波长加载不同信号进行传输,在接收端使用不同通带特性的光学滤波器对信号进行处理,可以选择接收基带信号、光子微波时钟信号、上行光源或不同载波频率的光子微波调制信号.作为验证,分别完成了2.5 Gbps基带信号、20 GHz和40 GHz光副载波调制信号的产生与接收.因为受限于试验条件,只进行了原理验证,但该系统理论上可集成波导设计,无需高频调制器件,并可生成更高载频光子微波信号,有利于未来的光/无线混合接入和超密集波分复用系统.
[Abstract]:A novel photonic microwave generation scheme for hybrid optical / wireless access is proposed and implemented. This scheme utilizes the characteristic that direct modulation distributed feedback semiconductor laser can produce wide spectrum signal. The lower frequency sinusoidal signal is modulated directly in semiconductor laser, and the spectrum is widened in semiconductor laser. Then the wide-spectrum signal is injected into a plurality of semiconductor lasers for phase locking to be used as a coherent locking light source. The light source is used to load different signals at different wavelengths for transmission, and optical filters with different pass band characteristics are used to process the signals at the receiving end. The baseband signals and photonic microwave clock signals can be selected to receive. Uplink light source or different carrier frequency photonic microwave modulation signal. As verification, the generation and reception of 2.5 Gbps baseband signal 20 GHz and 40 GHz optical subcarrier modulation signal have been completed respectively. Due to the limitation of the experimental conditions, only the principle is verified, but the system can theoretically integrate the waveguide design without the high-frequency modulation device, and can generate higher carrier frequency photonic microwave signal. In favor of future optical / wireless hybrid access and ultra-dense wavelength division multiplexing systems.
【作者单位】：山西大同大学固体物理研究所;天津大学电子信息工程学院;
【基金】：国家自然科学基金(61205061) 山西省青年科技研究基金(2011021018)~~
【分类号】：TN929.11

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