Optical fiber coated with an amorphous boron protective layer, and a method of depositing such a layer
US5717809A · kind A · utility
1Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1996 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Apr 24, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2916
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An optical fiber comprising an optical core enclosed in optical cladding, both made of a silica-based material, and a protective layer constituted by amorphous boron. The amorphous boron layer is deposited on a non-crystalline carbon which is itself deposited directly on the optical cladding. Also, a method is provided for depositing an amorphous boron layer on an optical fiber and includes a deposition step of depositing a layer of carbon on the fiber, followed by a subsequent step of depositing the amorphous boron protective layer chemically from the vapor phase on the layer of carbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.