Jacket tube made of synthetically produced quartz glass and optical fibres produced using said jacket tube
US7133591B2 · kind B2 · utility
0Cited by
5References
9Claims
0Family size
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Inventor
Key dates
| Filing date | Mar 27, 2003 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Mar 27, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2201/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Jacket tubes of synthetically produced quartz glass as a semi-finished product for producing an outer cladding glass layer of an optical fiber are generally known. The invention relates to an improvement of a jacket tube in terms of inexpensive producibility and of suitability as a semi-finished product for optical fibers having a low optical attenuation. According to the invention this object is achieved by a jacket tube in which the quartz glass has a content of metastable OH groups of less than 0.05 wt ppm and a content of anneal-stable OH groups of less than 0.05 wt ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.