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Title: Electro-optic voltage sensor for sensing voltage in an E-field

Abstract

A miniature electro-optic voltage sensor system capable of accurate operation at high voltages is disclosed. The system employs a transmitter, a sensor disposed adjacent to but out of direct electrical contact with a conductor on which the voltage is to be measured, a detector, and a signal processor. The transmitter produces a beam of electromagnetic radiation which is routed into the sensor where the beam undergoes the Pockels electro-optic effect. The electro-optic effect causes phase shifting in the beam, which is in turn converted to a pair of independent beams, from which the voltage of a system based on its E-field is determined when the two beams are normalized by the signal processor. The sensor converts the beam by splitting the beam in accordance with the axes of the beam`s polarization state (an ellipse whose ellipticity varies between -1 and +1 in proportion to voltage) into at least two AM signals. These AM signals are fed into a signal processor and processed to determine the voltage between a ground conductor and the conductor on which voltage is being measured. 18 figs.

Inventors:
;
Issue Date:
Research Org.:
Lockheed Martin Idaho Tech Co
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
335476
Patent Number(s):
5,892,357
Application Number:
PAN: 8-569,338
Assignee:
Lockheed Martin Idaho Technologies Co., Idaho Falls, ID (United States) PTO; SCA: 440800; PA: EDB-99:046982; SN: 99002077295
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 6 Apr 1999
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; ELECTRIC POTENTIAL; ELECTRIC MEASURING INSTRUMENTS; DESIGN; MINIATURIZATION; ELECTRO-OPTICAL EFFECTS; DATA PROCESSING; POCKELS CELL

Citation Formats

Woods, G.K., and Renak, T.W. Electro-optic voltage sensor for sensing voltage in an E-field. United States: N. p., 1999. Web.
Woods, G.K., & Renak, T.W. Electro-optic voltage sensor for sensing voltage in an E-field. United States.
Woods, G.K., and Renak, T.W. Tue . "Electro-optic voltage sensor for sensing voltage in an E-field". United States.
@article{osti_335476,
title = {Electro-optic voltage sensor for sensing voltage in an E-field},
author = {Woods, G.K. and Renak, T.W.},
abstractNote = {A miniature electro-optic voltage sensor system capable of accurate operation at high voltages is disclosed. The system employs a transmitter, a sensor disposed adjacent to but out of direct electrical contact with a conductor on which the voltage is to be measured, a detector, and a signal processor. The transmitter produces a beam of electromagnetic radiation which is routed into the sensor where the beam undergoes the Pockels electro-optic effect. The electro-optic effect causes phase shifting in the beam, which is in turn converted to a pair of independent beams, from which the voltage of a system based on its E-field is determined when the two beams are normalized by the signal processor. The sensor converts the beam by splitting the beam in accordance with the axes of the beam`s polarization state (an ellipse whose ellipticity varies between -1 and +1 in proportion to voltage) into at least two AM signals. These AM signals are fed into a signal processor and processed to determine the voltage between a ground conductor and the conductor on which voltage is being measured. 18 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {4}
}