skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
 [1]
  1. (Lakewood, CO)
Publication Date:
Research Org.:
Rockwell International Corp
OSTI Identifier:
868595
Patent Number(s):
US 5171981
Assignee:
United States of America as represented by United States Department (Washington, DC) ALO
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 = {1992},
month = {1}
}

Patent:

Save / Share: