Self-supporting fiber optic cable
US6785450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2003 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Mar 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/44384
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A self-supporting fiber optic cable includes a messenger section having at least one strength and anti-buckling member enclosed within a jacket and a carrier section enclosed within a jacket that is joined to the jacket of the messenger section by a web. In a preferred embodiment of the present invention, carrier section does not include strength members and the optical fibers are set with a high EFL. The greater EFL accommodates elongation of carrier section without transmission of stress to optical fibers. In addition, the preferably generally cylindrical internal surface of a tube or jacket curves the optical fibers creating EFL, for example, the fibers are guided by the internal surface in a helical path. Resistance to carrier section elongation and contraction can be controlled by varying the length of the web connecting the carrier and messenger sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.