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A novel all‐fiber high velocity interferometer for any reflector
Author(s) -
Hong GuangWei,
Jia Bo,
Wang Xiang
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22606
Subject(s) - optics , interferometry , reflector (photography) , offset (computer science) , demodulation , microwave , materials science , physics , engineering , electrical engineering , telecommunications , computer science , light source , channel (broadcasting) , programming language
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