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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. 3 figs.

Inventors:
Issue Date:
Research Org.:
Rockwell International Corp
OSTI Identifier:
7117654
Patent Number(s):
5171981 A
Application Number:
PPN: US 7-551834
Assignee:
Dept. of Energy, Washington, DC (United States) ALO; EDB-94-090524
DOE Contract Number:  
AC04-76DP03533
Resource Type:
Patent
Resource Relation:
Patent File Date: 12 Jul 1990
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; OPTICAL FIBERS; USES; POTENTIOMETERS; FIBER OPTICS; OPTICAL EQUIPMENT; PHASE CHANGE MATERIALS; ELECTRIC MEASURING INSTRUMENTS; ELECTRICAL EQUIPMENT; EQUIPMENT; FIBERS; MATERIALS; MEASURING INSTRUMENTS; 440800* - Miscellaneous Instrumentation- (1990-)

Citation Formats

Wood, C.B. Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection. United States: N. p., 1992. Web.
Wood, C.B. Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection. United States.
Wood, C.B. Tue . "Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection". United States.
@article{osti_7117654,
title = {Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection},
author = {Wood, C.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. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {12}
}