Optical fiber having a helical core for sensing a magnetic field
US4949038A · kind A · utility
12Cited by
17References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Apr 5, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/0209
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sensor for sensing magnetic fields. A single mode optical fiber has a core which is wound into a helical shape. The fiber is formed with a former and a core, and the core is preferably attached to the inner surface of the former and wound into a helical shape tracing its inner periphery. The core is also offset from the central axis of the fiber former.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.