Optical sensor for detecting an electric field via the Faraday effect
US5331272A · kind A · utility
1Cited by
14References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1992 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Mar 30, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/246
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The optical electric current sensor is composed of a birefringent light guide (2) coiled around an electric current conductor (1) and is characterized by a spatial modulation of the magnetic field or of the birefringence of the light guide, along the light guide, at a spatial period equal to a whole number of times the beat length of the guide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.