Fiber-optic voltage sensor
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.
- Research Organization:
- EG and G Rocky Flats, Inc., Golden, CO (United States). Rocky Flats Plant
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP03533
- Assignee:
- Dept. of Energy
- Patent Number(s):
- PATENTS-US-A7551834
- Application Number:
- ON: DE92003823; PPN: US 7-551834
- OSTI ID:
- 6015387
- Resource Relation:
- Patent File Date: 12 Jul 1990
- Country of Publication:
- United States
- Language:
- English
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Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection
Fiber-optic voltage sensor with cladded fiber and evanescent wave variation detection
Related Subjects
VOLTMETERS
DESIGN
ELECTRIC POTENTIAL
FIBER OPTICS
INVENTIONS
LIGHT SOURCES
OPTICAL FIBERS
ELECTRIC MEASURING INSTRUMENTS
ELECTRICAL EQUIPMENT
EQUIPMENT
FIBERS
MEASURING INSTRUMENTS
RADIATION SOURCES
440800* - Miscellaneous Instrumentation- (1990-)
440600 - Optical Instrumentation- (1990-)