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., Canoga Park, CA (United States)
- OSTI Identifier:
- 7117654
- Patent Number(s):
- 5171981
- Application Number:
- PPN: US 7-551834
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- 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 = {Tue Dec 15 00:00:00 EST 1992},
month = {Tue Dec 15 00:00:00 EST 1992}
}