Optical waveguides – Optical waveguide sensor – Including physical deformation or movement of waveguide
Reexamination Certificate
2004-09-20
2008-12-23
Doan, Jennifer (Department: 2874)
Optical waveguides
Optical waveguide sensor
Including physical deformation or movement of waveguide
C385S012000, C385S015000, C385S031000, C385S037000
Reexamination Certificate
active
07469078
ABSTRACT:
A system for measuring simultaneously both temperature and ac voltage and/or ac current, the system comprising: a piezo-electric sensor; and optical fiber that includes an optical strain sensor being in contact with the piezo-electric sensor and able to expand or contract therewith and an analyzer for analyzing an optical output of the fiber and strain sensor in response to an optical input, the analyzer being operable to use the optical output to determine the temperature and the ac voltage and/or ac current.
REFERENCES:
patent: 5053693 (1991-10-01), Bohnert et al.
patent: 5336883 (1994-08-01), Hobby et al.
patent: 5493390 (1996-02-01), Varasi et al.
patent: 5945667 (1999-08-01), Bohnert et al.
patent: 6233746 (2001-05-01), Skinner
patent: 2002/0028034 (2002-03-01), Chen et al.
patent: 2002/0182589 (2002-12-01), Knudsen et al.
patent: 199 02 279 (1999-01-01), None
patent: 0 357 253 (1990-03-01), None
patent: 2 255 635 (1992-11-01), None
Rao, Yun-Jiang, “In-fibre Bragg grating sensors”, Meas. Sci. Tech. 8 (1997) pp. 355-375.
Kersey, D., “Interrogation and Multiplexing Techniques for Fiber Bragg Grating Strain-Sensors”, SPIE vol. 2071, pp. 30-48, unknown date.
Niewczas, et al., “Interrogation of Extrinsic Fabry-Perot Interferometric Sensors Using Arrayed Waveguide Grating Devices”, IEEE Transactions on Instrumentation and Measurement, vol. 52, No. 4, Aug. 2003, pp. 1092-1096.
Xiangyang, et al., “Theoretical and Experimental Study on the Fabrication of Double Fiber Bragg Gratings”, Optical Fiber Technology 3, Article No. OF970210, (1997), pp. 189-193.
International Search Report, mailed Apr. 2, 2005.
McDonald James Rufus
Niewczas Pawel
Alston & Bird LLP
Doan Jennifer
University of Strathclyde
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