Microwave Frequency Measurement Based on Optic Delay Line

WU Peng-sheng; HAN Xiu-you; GU Yi-ying; HU Shu; LI Shan-feng; ZHAO Ming-shan

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Microwave Frequency Measurement Based on Optic Delay Line

paper | 更新时间：2020-08-12

- Microwave Frequency Measurement Based on Optic Delay Line
- Chinese Journal of Luminescence Vol. 32, Issue 9, Pages: 944-949(2011)
- 作者机构：
  
  大连理工大学物理与光电工程学院, 辽宁大连 116024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.11
- Received：25 May 2011，
  
  Revised：14 June 2011，
  
  Published Online：22 September 2011，
  
  Published：22 September 2011
- 稿件说明：
移动端阅览
吴彭生, 韩秀友, 谷一英, 胡墅, 李善锋, 赵明山. 基于可调光延迟线的光子学微波频率测量[J]. 发光学报, 2011,32(9): 944-949

WU Peng-sheng, HAN Xiu-you, GU Yi-ying, HU Shu, LI Shan-feng, ZHAO Ming-shan. Microwave Frequency Measurement Based on Optic Delay Line[J]. Chinese Journal of Luminescence, 2011,32(9): 944-949
吴彭生, 韩秀友, 谷一英, 胡墅, 李善锋, 赵明山. 基于可调光延迟线的光子学微波频率测量[J]. 发光学报, 2011,32(9): 944-949 DOI：

WU Peng-sheng, HAN Xiu-you, GU Yi-ying, HU Shu, LI Shan-feng, ZHAO Ming-shan. Microwave Frequency Measurement Based on Optic Delay Line[J]. Chinese Journal of Luminescence, 2011,32(9): 944-949 DOI：

摘要

提出了一种基于可调光延迟线的光子学微波频率测量方法。经同一微波信号调制的两个不同波长光载波在经过一段可调色散介质传输后

解调输出两路具有不同相位的微波信号

得到的相干微波功率随着色散量的改变出现周期性变化

由此周期可得到输入微波频率值。采用由8个磁光开关和1.6 km单模光纤构成的7-bit光纤延迟线实现色散量的调节。实验结果表明

在1~20 GHz范围内

测量精度达40 MHz以内。系统的最小可测功率可达-20 dBm

测量动态范围达到了45 dB。

Abstract

A photonic approach for microwave frequency measurement is proposed. A phase difference of the two microwave signals carried on two optical wavelengths is induced by a tunable dispersion medium. The interference microwave power is tuned periodically by changing dispersion value. The frequency of the microwave signal can be extracted from the period. In the proposed approach

a 7-bit optic delay line composed by 8 magneto-optical switches and 1.6 km single-mode fiber (SMF) is utilized as the tunable dispersion medium. The measurement accuracy remains within 40 MHz over a range of 1~20 GHz. The minimum measureable power can reach to -20 dBm and the dynamic range is 45 dB.

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references

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