Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Broadband Instantaneous Frequency Measurement System Based on the Dual Paths of the Stimulated Brillouin Scattering Effect

  • Jiahong Zhang (Faculty of Information Engineering and Automation, Kunming University of Science and Technology) ;
  • Weijie Liao (Faculty of Information Engineering and Automation, Kunming University of Science and Technology)
  • Received : 2023.05.02
  • Accepted : 2023.07.05
  • Published : 2023.08.25
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Abstract

A wideband instantaneous frequency measurement (IFM) system is been proposed, designed and analyzed. Phase modulation to intensity modulation conversion is implemented based on the stimulated Brillouin scattering (SBS) effect, and the microwave frequency can be measured by detecting the change in output power. Theoretical analysis shows that the frequency measurement range can be extended to 4fb by adjusting the two sweeping signals of the phase modulators with a difference of 2fb. The IFM system is set up using VPI transmission maker software and the performances are simulated and analyzed. The simulation results show that the measurement range is 0.5-45.96 GHz with a maximum measurement error of less than 9.9 MHz. The proposed IFM system has a wider measurement range than the existing SBS-based IFM system.

Keywords

Acknowledgement

National Natural Science Foundation of China (NSFC 62162034); Yunnan Fundamental Research Projects (202201AT070189).

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