Novel interferometer for measuring small distances

Zhaoxia Wu; Zhiquan Li; Kai Tong; Xifu Qiang

doi:10.1117/12.390563

4 July 2000 Novel interferometer for measuring small distances

Zhaoxia Wu, Zhiquan Li, Kai Tong, Xifu Qiang

Proceedings Volume 4082, Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications; (2000) https://doi.org/10.1117/12.390563
Event: Photonics Taiwan, 2000, Taipei, Taiwan

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.

Citation Download Citation

Zhaoxia Wu, Zhiquan Li, Kai Tong, and Xifu Qiang "Novel interferometer for measuring small distances", Proc. SPIE 4082, Optical Sensing, Imaging, and Manipulation for Biological and Biomedical Applications, (4 July 2000); https://doi.org/10.1117/12.390563

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