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Proceedings Paper

Novel interferometer for measuring small distances
Author(s): Zhaoxia Wu; Zhiquan Li; Kai Tong; Xifu Qiang
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Paper Abstract

A novel wavelength scanning optical fiber dual-interferometer for measuring small distance has been developed in this paper. A wavelength-scanning source is used to simultaneously illuminate Fabry-Perot (F-P) cavities. One is as the sensing cavity, the other is as a reference cavity. If the length of the reference cavity is pre-calibrated and maintain constant, and the scanning wavelength is taken as an inter-converter to compare the gap length of the sensing cavity with the reference cavity length, using the frequency spectrum separator, absolute measurement can be obtained.

Paper Details

Date Published: 4 July 2000
PDF: 5 pages
Proc. SPIE 4082, Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications, (4 July 2000); doi: 10.1117/12.390563
Show Author Affiliations
Zhaoxia Wu, Yanshan Univ. (China)
Zhiquan Li, Harbin Institute of Technology (China)
Kai Tong, Yanshan Univ. (China)
Xifu Qiang, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 4082:
Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications
Robert R. Alfano; Peng Pei Ho; Arthur E. T. Chiou, Editor(s)

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