Optical fiber sensor and method

Details Optical fiber sensor and method Optical fiber sensor and method

2006-06-08

2008-01-08

Wong, Tina M (Department: 2874)

Optical waveguides

Optical waveguide sensor

Including physical deformation or movement of waveguide

C385S012000, C385S037000, C385S126000

Reexamination Certificate

active

07317849

ABSTRACT:
An optical fiber sensor for detecting curvature of a body/structure comprises a cladding having an outer periphery. A central core receives and transmits light. The central core has Bragg gratings and is positioned in neutral planes of the cladding. Peripheral cores receive and transmit light. The peripheral cores have Bragg gratings and are peripherally positioned in the cladding with respect to the neutral planes. A connection configuration is provided in the outer periphery of the cladding to attach the optical fiber sensor to a body/structure such that the central core and the peripheral cores are in a predetermined orientation with respect to the body/structure to measure curvature of the body/structure.

REFERENCES:
patent: 6826343 (2004-11-01), Davis et al.
patent: 7027699 (2006-04-01), Tao et al.
patent: 2004/0042726 (2004-03-01), Kersey et al.
patent: 2004/0234218 (2004-11-01), Tao et al.
patent: 2007/0065077 (2007-03-01), Childers et al.
Flockhart, G.M.H.; MacPherson, W.N.; Barton, J.S.; Jones, J.D.C.; Zhang, L.; Bennion, I.;“Two-axis bend measurement with Bragg gratings in multicore optical fiber,”Optical Society of America, 2003.

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