Accelerated aging of phosphorus-doped optical fibers
US8445059B2 · kind B2 · utility
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Key dates
| Filing date | Sep 5, 2008 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Dec 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0288
- 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.