基于强度-相位级联调制的微波光子下变频法
发布时间：2019-03-08 20:15
【摘要】：为了优化微波光子下变频的无杂散动态范围,结合带反馈控制的强度调制器和相位调制器,提出并验证了基于强度和相位级联调制的微波光子下变频方法。通过理论推导和仿真分析了下变频原理以及本振功率对系统性能的影响,搭建了强度-相位级联调制的微波光子下变频系统,利用自行研制的直流偏置反馈控制模块确保强度调制器的工作状态稳定,对系统进行了性能测试。实验结果表明,增益和无杂散动态范围分别为-6.65dB和108.62dB/Hz~(2/3),与传统的强度调制器级联下变频链路相比,增益和无杂散动态范围分别提高了3.56dB和19.87dB。基于强度和相位级联调制的下变频方法仅需要单个偏置电压,且可通过反馈模块实现工作状态的稳定控制,系统结构简单、性能稳定,可实现大动态范围的微波光子下变频。
[Abstract]:In order to optimize the spurious dynamic range of microwave photon down-conversion, a microwave photon down-conversion method based on intensity and phase cascade modulation is proposed and verified by combining the intensity modulator and phase modulator with feedback control. The principle of down-conversion and the influence of local vibration power on system performance are analyzed by theoretical derivation and simulation, and a microwave photon down-conversion system with intensity-phase cascade modulation is built. The self-developed DC bias feedback control module is used to ensure the stability of the intensity modulator, and the performance of the system is tested. The experimental results show that the gain and spurious-free dynamic range are-6.65dB and 108.62 dB-Hz ~ (2), respectively, compared with the traditional down-converter link of the intensity modulator, and the gain-gain and the spurious-free dynamic range are 108.62 dB and 108.62 dB, respectively. The gain and spurious free dynamic range are increased by 3.56dB and 19.87dB, respectively. The down conversion method based on intensity and phase cascade modulation only needs a single bias voltage, and can realize stable control of working state through feedback module. The system has simple structure and stable performance, and can realize microwave photon down conversion in a large dynamic range.
【作者单位】： 北京工业大学应用数理学院;北京市精密测控技术与仪器工程技术研究中心;电子信息控制重点实验室;
【基金】：国家自然科学基金资助项目(No.61372061) 北京市青年拔尖创新人才资助项目(No.CIT&TCD201504020) 日新人才和中央支持地方专项配套项目
【分类号】：TN925
本文编号：2437169
[Abstract]:In order to optimize the spurious dynamic range of microwave photon down-conversion, a microwave photon down-conversion method based on intensity and phase cascade modulation is proposed and verified by combining the intensity modulator and phase modulator with feedback control. The principle of down-conversion and the influence of local vibration power on system performance are analyzed by theoretical derivation and simulation, and a microwave photon down-conversion system with intensity-phase cascade modulation is built. The self-developed DC bias feedback control module is used to ensure the stability of the intensity modulator, and the performance of the system is tested. The experimental results show that the gain and spurious-free dynamic range are-6.65dB and 108.62 dB-Hz ~ (2), respectively, compared with the traditional down-converter link of the intensity modulator, and the gain-gain and the spurious-free dynamic range are 108.62 dB and 108.62 dB, respectively. The gain and spurious free dynamic range are increased by 3.56dB and 19.87dB, respectively. The down conversion method based on intensity and phase cascade modulation only needs a single bias voltage, and can realize stable control of working state through feedback module. The system has simple structure and stable performance, and can realize microwave photon down conversion in a large dynamic range.
【作者单位】： 北京工业大学应用数理学院;北京市精密测控技术与仪器工程技术研究中心;电子信息控制重点实验室;
【基金】：国家自然科学基金资助项目(No.61372061) 北京市青年拔尖创新人才资助项目(No.CIT&TCD201504020) 日新人才和中央支持地方专项配套项目
【分类号】：TN925
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