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

Abstract

A miniature electro-optic voltage sensor and system capable of accurate operation at high voltages has a sensor body disposed in an E-field. The body receives a source beam of electromagnetic radiation. A polarization beam displacer separates the source light beam into two beams with orthogonal linear polarizations. A wave plate rotates the linear polarization to rotated polarization. A transducer utilizes Pockels electro-optic effect and induces a differential phase shift on the major and minor axes of the rotated polarization in response to the E-field. A prism redirects the beam back through the transducer, wave plate, and polarization beam displacer. The prism also converts the rotated polarization to circular or elliptical polarization. The wave plate rotates the major and minor axes of the circular or elliptical polarization to linear polarization. The polarization beam displacer separates the beam into two beams of orthogonal linear polarization representing the major and minor axes. The system may have a transmitter for producing the beam of electro-magnetic radiation; a detector for converting the two beams into electrical signals; and a signal processor for determining the voltage.

Inventors:
; ;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1245967
Patent Number(s):
6,362,615
Application Number:
09/386,937
Assignee:
Bechtel BWXT Idaho LLC (Idaho Falls, ID) INL
Resource Type:
Patent
Resource Relation:
Patent File Date: 1999 Aug 31
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 43 PARTICLE ACCELERATORS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Davidson, James R., Crawford, Thomas M., and Seifert, Gary D. Electro-optic voltage sensor for sensing voltage in an E-field. United States: N. p., 2002. Web.
Davidson, James R., Crawford, Thomas M., & Seifert, Gary D. Electro-optic voltage sensor for sensing voltage in an E-field. United States.
Davidson, James R., Crawford, Thomas M., and Seifert, Gary D. Tue . "Electro-optic voltage sensor for sensing voltage in an E-field". United States. https://www.osti.gov/servlets/purl/1245967.
@article{osti_1245967,
title = {Electro-optic voltage sensor for sensing voltage in an E-field},
author = {Davidson, James R. and Crawford, Thomas M. and Seifert, Gary D.},
abstractNote = {A miniature electro-optic voltage sensor and system capable of accurate operation at high voltages has a sensor body disposed in an E-field. The body receives a source beam of electromagnetic radiation. A polarization beam displacer separates the source light beam into two beams with orthogonal linear polarizations. A wave plate rotates the linear polarization to rotated polarization. A transducer utilizes Pockels electro-optic effect and induces a differential phase shift on the major and minor axes of the rotated polarization in response to the E-field. A prism redirects the beam back through the transducer, wave plate, and polarization beam displacer. The prism also converts the rotated polarization to circular or elliptical polarization. The wave plate rotates the major and minor axes of the circular or elliptical polarization to linear polarization. The polarization beam displacer separates the beam into two beams of orthogonal linear polarization representing the major and minor axes. The system may have a transmitter for producing the beam of electro-magnetic radiation; a detector for converting the two beams into electrical signals; and a signal processor for determining the voltage.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {3}
}

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