Fiber optic drop cables suitable for outdoor fiber to the subscriber applications
US7035513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2004 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Jun 25, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/44384
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A figure-eight fiber optic drop cable includes a messenger section and a carrier section connected by a web. The carrier section has at least one optical waveguide and at least one roving. In one embodiment, the carrier section has an average shrinkage of about 0.5% or less when separated from the messenger section during an average shrinkage test. Also the carrier section of the figure-eight fiber optic drop cable can have an average coefficient of thermal expansion (CTE) section after being separated from the messenger section of about 5.0×10−3%/° C. or less for preserving optical performance. Furthermore, a maximum delta attenuation of the at least one optical waveguide during thermal cycling may be about 0.3 dB/20 meters or less at a reference wavelength of about 1550 nm at a temperature of about −40° C. Other cable configurations are also possible with the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.