双波长全光纤激光干涉速度复测技术

Dual Wavelength All-Fiber Laser Interferometric Velocity Retest Technique

摘要: 针对冲击爆轰实验中对速度测量系统的高可靠性要求，基于光纤波分复用/解复用技术，提出了一种双波长激光干涉速度复测方法及技术。采用1550.0和1530.3 nm 2个波长，设计并搭建了一套速度复测原理验证系统，并在气体炮上开展了低速、高速2种典型状态下的动态验证实验。实验结果显示，利用单一光纤探头实现了样品自由面运动速度的复测，2个波长得到的速度测量结果具有较好的一致性，速度相对偏差在±1.5%以内。
- 激光干涉 /
- 多普勒测速 /
- 波分复用 /
- 速度复测 /
- null
Abstract: Based on the wavelength division multiplexing technology and the traditional optical path structure design of laser velocity interferometer, a dual wavelength laser velocity interferometer which has the retest function is proposed. The basic principle and optical path structure design of this dual wavelength laser velocity interferometer are briefly introduced. The dynamic examination experiment of low speed and high speed are carried out on gas guns, and the velocities of the same measuring point are simultaneous measured by this method with one single probe.The experimental results show that the deviation of the two wavelengths velocity measurement is within 1.5%.
- Laser interferometry /
- Doppler velocimetry /
- Interferometric velocimetry /
- Wavelength Division Multiplexing /
- Velocity retest