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Volume 40 Issue 3
Feb 2026
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Chinese Journal of High Pressure Physics  > 2026  >  40(3): 033401.
WANG Wei, LIU Shenggang, GU Wei, TAO Tianjiong, MA Heli, WANG Xiang, WENG Jidong. Dual Wavelength All-Fiber Laser Interferometric Velocity Retest Technique[J]. Chinese Journal of High Pressure Physics, 2026, 40(3): 033401. doi: 10.11858/gywlxb.20251081
Citation: WANG Wei, LIU Shenggang, GU Wei, TAO Tianjiong, MA Heli, WANG Xiang, WENG Jidong. Dual Wavelength All-Fiber Laser Interferometric Velocity Retest Technique[J]. Chinese Journal of High Pressure Physics, 2026, 40(3): 033401. doi: 10.11858/gywlxb.20251081
shu

Dual Wavelength All-Fiber Laser Interferometric Velocity Retest Technique

doi: 10.11858/gywlxb.20251081

  • Institute of Fluid Physics, CAEP, Mianyang 621999, Sichuan, China

  • Received Date: 25 Apr 2025
  • Rev Recd Date: 17 Sep 2025
    • Available Online: 18 Sep 2025
  • Issue Publish Date: 05 Feb 2026
    Abstract
  • In order to meet the high reliability requirement of velocity measurement in shock wave and detonation experiments, a new velocity measurement method named dual-wavelength laser interferometer was proposed based on wavelength division multiplexing/demultiplexing technique. A verification system was designed with 1550.0 and 1530.3 nm wavelengths, and the dynamic verification experiments under low- and high- speed conditions were carried out on the light gas gun. The dynamic experimental results show that the free surface velocity of the sample can be measured independently with a single optical fiber probe, and the velocity measurement results obtained at two wavelengths exhibit good consistency, with the relative deviation of the velocity within ±1.5%.

     

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