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Proceedings Paper

Dynamic and random-access strain measurement by fiber Bragg gratings with synthesis of optical coherence function
Author(s): Momoyo Enyama; Kazuo Hotate
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Paper Abstract

We have proposed and constructed a system to multiplex fiber Bragg grating (FBG) strain sensors with same reflection wavelength, adopting the synthesis of optical coherence function technique (SOCF), which has realized dynamic strain measurement. The ability to control the coherence peak position of SOCF allows random access in the spatial domain. In this paper, the function of random access strain measurement has been realized by switching the coherence peak position at every FBG, synchronizing with FBG spectrum measurement, to use the sampling rate to the full. In addition, we have proposed and confirmed the novel method for improving FBG interval by simply modulating the LD intensity.

Paper Details

Date Published: 14 December 2004
PDF: 10 pages
Proc. SPIE 5589, Fiber Optic Sensor Technology and Applications III, (14 December 2004); doi: 10.1117/12.571357
Show Author Affiliations
Momoyo Enyama, Univ. of Tokyo (Japan)
Kazuo Hotate, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 5589:
Fiber Optic Sensor Technology and Applications III
Michael A. Marcus; Brian Culshaw; John P. Dakin, Editor(s)

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