Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection
Abstract
A fiber optic voltage sensor is described which includes a source of light, a reference fiber for receiving a known percentage of the light and an electrostrictive element having terminals across which is applied, a voltage to be measured. The electrostrictive element is responsive to the applied voltage to assume an altered physical state. A measuring fiber also receives a known percentage of light from the light source and is secured about the electrostrictive element. The measuring fiber is provided with a cladding and exhibits an evanescent wave in the cladding. The measuring fiber has a known length which is altered when the electrostrictive element assumes its altered physical state. A differential sensor is provided which senses the intensity of light in both the reference fiber and the measuring fiber and provides an output indicative of the difference between the intensities.
- Inventors:
-
- Lakewood, CO
- Issue Date:
- Research Org.:
- Rockwell International Corp., Canoga Park, CA (United States)
- OSTI Identifier:
- 868595
- Patent Number(s):
- 5171981
- Assignee:
- United States of America as represented by United States Department (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
- DOE Contract Number:
- AC04-76DP03533
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- fiber-optic; voltage; sensor; cladded; fiber; evanescent; wave; variation; detection; optic; described; source; light; reference; receiving; percentage; electrostrictive; element; terminals; applied; measured; responsive; assume; altered; physical; measuring; receives; secured; provided; cladding; exhibits; length; assumes; differential; senses; intensity; provides; output; indicative; difference; intensities; voltage sensor; light source; fiber optic; applied voltage; output indicative; altered physical; evanescent wave; optic voltage; /250/324/
Citation Formats
Wood, Charles B. Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection. United States: N. p., 1992.
Web.
Wood, Charles B. Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection. United States.
Wood, Charles B. Wed .
"Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection". United States. https://www.osti.gov/servlets/purl/868595.
@article{osti_868595,
title = {Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection},
author = {Wood, Charles B},
abstractNote = {A fiber optic voltage sensor is described which includes a source of light, a reference fiber for receiving a known percentage of the light and an electrostrictive element having terminals across which is applied, a voltage to be measured. The electrostrictive element is responsive to the applied voltage to assume an altered physical state. A measuring fiber also receives a known percentage of light from the light source and is secured about the electrostrictive element. The measuring fiber is provided with a cladding and exhibits an evanescent wave in the cladding. The measuring fiber has a known length which is altered when the electrostrictive element assumes its altered physical state. A differential sensor is provided which senses the intensity of light in both the reference fiber and the measuring fiber and provides an output indicative of the difference between the intensities.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}
Works referenced in this record:
All Single Mode Fiber Magnetic Field Sensor
conference, January 1986
- Corke, M.; Kopera, P. M.; Moore, J. E.
- 29th Annual Technical Symposium, SPIE Proceedings
An Overview Of Mach-Zehnder Interferometric Sensors
conference, January 1986
- Watanabe, S. F.; Cahill, R. F.
- 29th Annual Technical Symposium, SPIE Proceedings