Gas blocking device for optical fiber repeater
US6836609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2001 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4248
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A gas blocking device is used in an optical fiber repeater or other device to prevent the passage of gas, for example, to prevent nitrogen from escaping from a pressurized housing through a fiber holding tube or pigtail. The gas blocking device includes a fiber containing body, a fiber organizing insert, and a locking member securing the insert to one end of the body. The fiber containing body is attached to one end of the fiber holding tube. The fibers extend from the fiber holding tube through a passageway in the body, and each of the fibers extends through a fiber receiving hole in the fiber organizing insert. The insert engages the body such that the insert is prevented from rotating with respect to the body and the fibers are protected against microbending and other damage. A material, such as hot melt glue, fills at least a portion of the body and surrounds the fibers to block the gas from entering the fiber holding tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.