Optics: measuring and testing – By light interference – Using fiber or waveguide interferometer
Reexamination Certificate
2007-10-02
2007-10-02
Lee, Hwa (Andrew) (Department: 2886)
Optics: measuring and testing
By light interference
Using fiber or waveguide interferometer
C356S478000, C356S461000
Reexamination Certificate
active
11010530
ABSTRACT:
A system for estimating a parameter selected from the group consisting of a current, a magnetic field, or combinations thereof comprises a resonant frequency tunable magneto-optical loop resonator, wherein the loop resonator comprises a magneto-optical sensing element coupled to an optical waveguide, and wherein the loop resonator is configured for receiving an originating optical signal from a broadband light source and providing a modulated signal indicative of the estimated parameter.
REFERENCES:
patent: 4375680 (1983-03-01), Cahill et al.
patent: 4542338 (1985-09-01), Arditty et al.
patent: 5108183 (1992-04-01), Fling et al.
patent: 5564832 (1996-10-01), Ball et al.
patent: 5644397 (1997-07-01), Blake
patent: 6188811 (2001-02-01), Blake
patent: 6301400 (2001-10-01), Sanders
patent: 6434285 (2002-08-01), Blake et al.
patent: 6542651 (2003-04-01), Bennett
patent: 6670799 (2003-12-01), Bull et al.
patent: 0 783 701 (1998-05-01), None
patent: 1195582 (2002-04-01), None
patent: 1 310 802 (2003-05-01), None
patent: 2001281272 (2001-10-01), None
patent: 2004301769 (2004-10-01), None
patent: WO 94/00768 (1994-01-01), None
“Current Sensing by Mode Coupling in Fibre via the Faraday Effect”, Jan. 31, 1991, Electronics Letters, vol. 27, No. 3, pp. 207-208.
W. Chu, et al “Magneto-Optic Current Sensor Using a Highly-Linear Birefringent Optical Fibre”, May 29, 1992, Fibre Optics Sensor Technology, IEE Colloquium on pp. 7/1-7/3.
A.J. Rogers, et al, “Vibration Immunity for Optical-Fibre Current Measurement”, Jul. 1995, Journal of Lightwave Technology, vol. 13, No. 7, pp. 1371-1377.
J. Song, et al, “A Prototype Clamp-on Magneto—optical Current Transducer for Power System Metering and Relaying”, Oct. 4, 1995, IEEE Transactions on Power Delivery, vol. 10, No. 4.
Y.N. Ning, et al “Recent Progress in optical current sensing techniques”, May 1995, Rev. Sci. Instrum., vol. 66, No. 5, pp. 3097-3111.
A. Kung, et al “Reciprocal and Quasi-Reciprocal Brillouin Fiber-Optic Current Sensors”, Dec. 1996, IEEE Photonics Technology Letters, vol. 8, No. 12.
“Magneto-Optical Fibre Sensors for Electrical Industry: Analysis of Performances”, IEE Proceedings J. Optoelectronics, Institution of Electrical Engineers. Stevenage, GE, vol. 135, No. 5, part J. Oct. 1, 1988, pp. 372-382, XP00027004.
EPO Search Report dated Mar. 14, 2006.
Deng Kung-Li Justin
Forman Glenn Alan
Agosti Ann M.
General Electric Company
Lee Hwa (Andrew)
Patnode Patrick K.
LandOfFree
Magneto-optical sensors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magneto-optical sensors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magneto-optical sensors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3897828