Reduced-diameter, easy-access loose tube cable
US8031997B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2009 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Nov 10, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4434
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is an improved optical fiber that employs a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The improved coating system provides optical fibers that are useful in relatively thin-walled, low-modulus buffer tubes (i.e., “flextubes”) that can be readily accessed without special tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.