• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Lightwave Technology >High-Accuracy Multiple Microwave Frequency Measurement With Two-Step Accuracy Improvement Based on Stimulated Brillouin Scattering and Frequency-to-Time Mapping
【24h】

High-Accuracy Multiple Microwave Frequency Measurement With Two-Step Accuracy Improvement Based on Stimulated Brillouin Scattering and Frequency-to-Time Mapping

机译：高精度多微波频率测量，基于刺激布里渊散射和频率到时间映射的两步精度改善

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A photonic-assisted multiple microwave frequency measurement approach based on stimulated Brillouin scattering (SBS) and frequency-to-time mapping with high accuracy and a wide frequency measurement range is reported. A frequency sweeping signal is modulated on an optical carrier that is shifted by the Brillouin frequency shift as a frequency sweeping optical probe wave. The unknown microwave frequencies are modulated on the original optical carrier to pump a length of single-mode fiber. Thanks to the SBS effect, the Brillouin gain spectrum is detected by the frequency sweeping optical probe wave. After the optical signal from the probe branch is detected at a photodetector, the amplitude of the direct-current component will be much increased at the exact time when the SBS gain generated by the unknown signal overlaps with a specific optical wavelength of the frequency sweeping optical signal. Therefore, the unknown microwave frequencies are mapped to the time domain. More importantly, by introducing a two-step accuracy improvement, including the reference calibration and the curve smoothing, the measurement accuracy of the proposed approach is greatly improved compared with most of the available approaches. An experiment is performed. Microwave frequency measurement from 6 to 18 GHz is demonstrated with a measurement error of less than +/- 1 MHz.
机译：报道了一种基于刺激的布里渊散射（SBS）的光子辅助多微波频率测量方法和具有高精度和宽频测量范围的频率 - 时间映射。在光学载波上调制频率扫描信号，该光学载波被布里渊频率移位作为频率扫描光学探针波移位。未知的微波频率在原始光学载体上调制以泵送单模光纤的长度。由于SBS效应，通过扫描光学探头波检测布里渊增益谱。在从探针分支检测到光电探测器之后，当由未知信号产生的SBS增益与扫描光学波长的特定光波长重叠时，直流分量的幅度将大大增加。信号。因此，未知的微波频率映射到时域。更重要的是，通过引入两步精度改进，包括参考校准和曲线平滑，与大多数可用方法相比，所提出的方法的测量精度大大提高。进行实验。从6到18 GHz的微波频率测量显示，测量误差小于+/- 1 MHz。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号