ELECTRO-OPTIC VOLTAGE SENSOR

An electro-optic voltage sensor system includes a sensor (40) disposed in an E- field, a transmitter (34) for producing the electro-magnetic beam, detectors (162, 164) for converting the two beams int o electrical signals and a signal processor (174) for determining the voltage. The sensor (40) rece...

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Bibliographic Details
Main Authors SEIFERT, GARY D, DAVIDSON, JAMES R, CRAWFORD, THOMAS M
Format Patent
LanguageEnglish
French
Published 12.07.2005
Edition6
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:An electro-optic voltage sensor system includes a sensor (40) disposed in an E- field, a transmitter (34) for producing the electro-magnetic beam, detectors (162, 164) for converting the two beams int o electrical signals and a signal processor (174) for determining the voltage. The sensor (40) receives a source beam (38) and includes a polarization beam displacer (80) for separating the source light beam (38) into two beams with orthogonal linear polarizations, a wave plate (104) for rotating the linear polarization to rotated polarization, a transducer (114) utilizing pockels electro-optic effect for inducing a differential phase shift on the major and minor axes of the rotated polarization in response to the E-field, a prism (130) for redirecting the beam back through the transducer (114) and also converts the rotated polarization to circular or elliptical polarization.
Bibliography:Application Number: CA19992348274