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Proceedings Paper

Stress-location measurement along an optical fiber by synthesis of optical coherence function
Author(s): Kazuo Hotate; Xueliang Song; Zuyuan He
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Paper Abstract

A triangle-shape optical coherence function is synthesized, and is applied to construct a system for real-time stress- location measurement along an optical fiber. We utilize a polarization maintaining fiber (PMF) for the sensing element, and the coupling from one eigen polarization mode to the other by the stress is used as the sensing mechanism. The delay difference between the two eigen polarization modes linearly corresponds to the stress-position on PMF, which is measured as the degree of coherence linearly changing from 1 to 0, like a triangle. By extracting the coherence value, the stress point is figured out in real time.

Paper Details

Date Published: 9 December 1999
PDF: 8 pages
Proc. SPIE 3860, Fiber Optic Sensor Technology and Applications, (9 December 1999); doi: 10.1117/12.372971
Show Author Affiliations
Kazuo Hotate, Univ. of Tokyo (Japan)
Xueliang Song, Univ. of Tokyo (Japan)
Zuyuan He, Univ. of Tokyo (United States)

Published in SPIE Proceedings Vol. 3860:
Fiber Optic Sensor Technology and Applications
Michael A. Marcus; Brian Culshaw, Editor(s)

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