Optical fiber strain sensor device and strain detection method

Details Optical fiber strain sensor device and strain detection method Optical fiber strain sensor device and strain detection method

2006-02-21

2006-02-21

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

07002672

ABSTRACT:
To provide an optical fiber strain sensor device and a strain detection method, for measuring precisely AE and for detecting effectively a rapid strain change due to a shock load, an optical fiber strain sensor device includes an FBG sensor mounted on an object to be measured, a broadband light source for directing a broadband wavelength light ray to the FBG sensor, and an FBG filter that reflects or transmits a light ray reflected from the FBG sensor, and, using the FBG filter, the optical fiber strain sensor device processes and detects a change in the center wavelength of the light ray that has been incident from the broadband light source and then has been reflected from the FBG sensor.

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patent: 6018160 (2000-01-01), Bennion et al.
patent: 6674928 (2004-01-01), Johnson et al.
patent: 199 13 800 (2000-10-01), None
patent: WO 02/090893 (2002-11-01), None

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