Optical fiber having water swellable material for identifying grouping of fiber groups
US6321012A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Aug 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4482
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved optical fiber cable in which the threads that hold the various fiber groups together is made of a water swellable material and is color coded to allow the various fibers of the optical cable to be distinguished from each other. The optical fiber cable, includes a plurality of optical fiber groups, each groups including a plurality of optical fibers; a first water swellable material wrapped around a first group and a second water swellable material wrapped around a second group, wherein the first water swellable material has a color which is different from a color of the second water swellable material so as to allow optical fibers of the first group to be distinguished from optical fibers of the second group; and a sheath holding the plurality of optical fiber groups together. The optical fiber cable further includes a buffer tube in which the plurality of optical fiber groups are disposed arranged such that the sheath surrounds the buffer tube. The optical fibers of the first group have different colors and the optical fibers of the second group have different colors. However, the colors of the optical fibers of the first group are the same as the colors of the optical…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.