Shielded fiber optics cable for compatibility with high voltage power lines
US5687271A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1994 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Mar 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4488
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Method and apparatus are presented for providing an electric field-free region for fiber optic cables in near proximity to high voltage power lines by means of a conducting electrical shield at the same voltage as the power line. An electric field-free region is still provided even if the electrical shield is omitted, by having the wires of the power line completely surround the fiber optic cable. An electric field-free region is also provided by embedding the optical fiber inside each wire of the power line. The electric field free region for a fiber optic cable prevents electrical treeing and other undesirable effects that would make the cable inoperable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.