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1. US20110052115 - SYSTEM AND METHOD FOR TEMPERATURE CONTROL AND COMPENSATION FOR FIBER OPTIC CURRENT SENSING SYSTEMS

Office United States of America
Application Number 12548512
Application Date 27.08.2009
Publication Number 20110052115
Publication Date 03.03.2011
Publication Kind A1
IPC
G02B 6/00
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
G01B 9/02
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9Instruments as specified in the subgroups and characterised by the use of optical measuring means
02Interferometers
G01J 3/44
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28Investigating the spectrum
44Raman spectrometry; Scattering spectrometry
Applicants GENERAL ELECTRIC COMPANY
Inventors Lee Boon Kwee
Guida Renato
Wu Juntao
Kraemer Sebastian Gerhard Maxim
Dekate Sachin Narahari
Title
(EN) SYSTEM AND METHOD FOR TEMPERATURE CONTROL AND COMPENSATION FOR FIBER OPTIC CURRENT SENSING SYSTEMS
Abstract
(EN)

A fiber optic sensor system employs at least one light source that operates to generate light having one or more desired wavelengths. A first optical fiber based sensor transparent to a desired light wavelength operates to sense a magnetic field emitted from a predetermined electrical conductor or a current flowing through the electrical conductor. A temperature sensor that may be another optical fiber based sensor operates to sense an operating temperature associated with the first optical fiber based sensor in response to the light generated by the light source. Signal-processing electronics adjust the sensed current to substantially compensate for temperature induced errors associated with the sensed current in response to the measured operational temperature of the fiber optic sensor.