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:
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1245967
- Patent Number(s):
- 6362615
- Application Number:
- 09/386,937
- Assignee:
- Bechtel BWXT Idaho LLC (Idaho Falls, ID)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
- 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 = {Tue Mar 26 00:00:00 EST 2002},
month = {Tue Mar 26 00:00:00 EST 2002}
}