Accelerated aging of phosphorus-doped optical fibers
US8111961B2 · kind B2 · utility
2Cited by
3References
16Claims
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Key dates
| Filing date | Feb 26, 2008 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Sep 16, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C25/6286
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Adverse hydrogen aging limitations in multiply-doped optical fibers are overcome by passivating these optical fibers using a deuterium passivation process. This treatment essentially pre-reacts the glass with deuterium so that the most active glass sites are no longer available to react with hydrogen in service. Optical fibers of main interest are doped with mixtures of germanium and phosphorus. Optimum passivating process conditions are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.