A novel all-fiber high velocity interferometer for any reflector
✍ Scribed by Guang-Wei Hong; Bo Jia; Xiang Wang
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 248 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
A novel all‐fiber high velocity interferometer system for any reflector (AFHVISAR) is proposed and demonstrated. The system mainly consists of two 3 × 3 SM fiber couplers. A quasi‐direct current (QDC) signal directly from the moving surface is obtained and used to offset the QDC component in the interfering signals for more precise phase demodulation. The use of the diffuse surface solves the fringe loss problem induced by the nonparallel movements of the surface. The experiment with a one‐stage light gas gun shows that the AFHVISAR can successfully achieve the surface velocity profile of LY~12~ aluminum specimen. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2032–2035, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22606