Solar resistant optical fiber and method
US5901264A · kind A · utility
13Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Jun 12, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2201/21
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Solar resistant fused silica optical fiber is made by heating the starter rod, drawing the fiber, and preferably immediately diffusing hydrogen into the fiber, then promptly covering the hydrogen diffused fiber with hermetic coating to trap the hydrogen within the fiber. The presence of hydrogen in the fiber neutralizes UV radiation induced defects and because the hydrogen can only migrate through the fiber ends, the life of the solar resistant fiber for transmission wavelengths is increased by several years over conventional solar resistant fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.