Fiber-optic sensing system for measuring curvature

Details Fiber-optic sensing system for measuring curvature Fiber-optic sensing system for measuring curvature

2007-05-01

2007-05-01

Font, Frank G. (Department: 2883)

Optical waveguides

Optical waveguide sensor

C385S013000, C385S032000, C385S117000, C600S145000

Reexamination Certificate

active

11248369

ABSTRACT:
The invention provides a fiber-optic sensing system for measuring a curvature in a small and elongated cavity of an object. The system includes a light source, an optical fiber and a light signal reflecting device disposed at a distal end of the optical fiber. The optical source emits a light signal into the optical fiber. The distal section of the optical fiber is inserted into the cavity of the object which curvature is to be measured. The curvature of the cavity bends the distal section of the optical fiber so that attenuation of light signal transmitting through the distal section occurs. This attenuated signal is reflected by a reflecting device and coupled into a measuring device. Thereby the curvature is deduced in accordance with the amount of energy attenuation in the reflected light signal.

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patent: 7065284 (2006-06-01), Ao et al.
patent: 2005/0137657 (2005-06-01), Dykaar
patent: 10112520 (1999-11-01), None
patent: 2003-102677 (2003-08-01), None
patent: 2004-345545 (2004-09-01), None

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