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Proceedings Paper

Fiber-optic differential displacement measurement based on three cascaded interferometers
Author(s): Seiichiro Kinugasa; Jun-ichi Yoshinaga
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Paper Abstract

A new type of white-light-interferometric (WLI) fiber optic sensor is proposed. Three cascaded interferometers enable differential measurement. Two interferometers among the three are used for sensing. The other is for processing, which converts the imbalance of optical path difference (OPD) between the two sensing interferometers into differential displacement. This unique three-cascaded WLI sensor system is described in detail with some experimental results.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623274
Show Author Affiliations
Seiichiro Kinugasa, Yamatake Corp. (Japan)
Jun-ichi Yoshinaga, Yamatake Corp. (Japan)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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