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Proceedings Paper

Optical scanning fiber dual-interferometer system for measuring a small distance
Author(s): Tianchu Li; Russell G. May; Anbo Wang; Richard O. Claus
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Paper Abstract

In this paper we present an optical scanning, fiber dual- extrinsic Fabry-Perot interferometer (DEFPI) system for measuring small distance absolutely. Taking the scanning wavelength as an 'inter-converter' to compare the gap length of the sensing head with a reference length, we may obtain, in practice, a semi-absolute measurement of the sensing head length. The measurement is independent from the wavelength scanning accuracy and the reference cavity length can be self-calibrated simply by changing the sensing length with a known distance.

Paper Details

Date Published: 24 September 1996
PDF: 6 pages
Proc. SPIE 2895, Fiber Optic Sensors V, (24 September 1996); doi: 10.1117/12.252154
Show Author Affiliations
Tianchu Li, National Institute of Metrology (China)
Russell G. May, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2895:
Fiber Optic Sensors V
Kim D. Bennett; Byoung Yoon Kim; Yanbiao Liao, Editor(s)

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