Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2008-07-01
2008-07-01
Tran, Dzung D (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S085000, C398S108000
Reexamination Certificate
active
07394982
ABSTRACT:
A current sensing system comprises a current transformer; a burden resistor connected across a secondary of the current transformer; a piezo-optic sensor coupled to the burden resistor, comprising a piezoelectric transducer, an optical fiber and a first optical filter with a first bandwidth; and an optical interrogator, configured for sending an originating signal to the first bandwidth optical filter and receiving a resulting data signal and a second optical filter with a second bandwidth for filtering the resulting data signal.
REFERENCES:
patent: 3324393 (1967-06-01), Casey et al.
patent: 5380995 (1995-01-01), Udd et al.
patent: 6670799 (2003-12-01), Bull et al.
patent: 2003/0141440 (2003-07-01), Kim et al.
patent: 2 221 763 (1990-02-01), None
patent: 2 328 278 (1999-02-01), None
patent: 2328278 (1999-02-01), None
Niewczas et al, “Design and Evaluation of a Pre-Prototype Hybrid Fiber-Optic Voltage Sensor for a Remotely Interrogated Condition Monitoring System”, IMTC, May 2004.
Pachecò et al. “Piezoelectric-modulated optica fibre Bragg grating high-voltage sensor”, Meas. Sci. Technol. 10 (1999).
Agilent, “Optical Spectrum Analysis”, Printed in USA Sep. 2000.
Niewczas et al. “Performance Analysis fo the Fiber Bragg Grating Interrogation System Based on an Arrayed WAveguide Grating”, IEEE Instrumentation and Measurement, May 2003.
Y.N. Ning, et al, “Interrogation of a Conventional Current Transformer by a Fiber-Optic Interferometer”, Sep. 15, 1991, Optics Letters, vol. 16. No. 18, pp. 1448-1450.
C. McGarrity, et al. “A Fiber-Optic System for three—phase current sensing using a hybrid sensing technique”, Mar. 1992, Rev. Sci. Instrum. vol. 63. No. 3, pp. 2035-2039.
Y.N. Ning, et al, “Recent Progress in Optical Current Sensing Techniques”, May 1995, Rev. Sci. Instrum. vol. 66, No. 5, pp. 3097-3111.
N.E. Fisher, et al. “The interrogation of a Conventional Current Transformer using an in-fibre Bragg grating”, 1997, Meas. Sci. Technol , vol. 8, pp. 1080-1084.
Wang Yutian, et al, “A new optically powered ultra voltage current transformer”, 1998, SPIE, vol. 3555, C277-786x, pp. 13-17.
Kern John Michael
Koste Glen Peter
Seeley Charles Erklin
Tolliver Todd Ryan
Agosti Ann M.
General Electric Company
Patnode Patrick K.
Tran Dzung D
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