Optical fiber unit for air blown installation and manufacturing method thereof
US7450805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2003 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Feb 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4485
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical fiber unit for air blown installation includes at least one optical fiber having a core layer and a clad layer, a protective layer coated on the surface of the optical fiber; and protrusions made of polymer resin and formed on the outer circumference of the protective layer in a banded shape. The protrusions may be formed either by supplying polymer resin to the outer circumference of the optical fiber with passing the optical fiber through an extrusion dice in which grooves of a predetermined shape are formed on a hollow inner circumference thereof, or by supplying polymer resin to the outer circumference of the optical fiber through nozzles with moving the optical fiber in a longitudinal direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.