Jacket tube made of synthetically produced quartz glass and optical fibres produced using said jacket tube
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United States of America Patent
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Nov 7, 2006
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N/A
app pub date -
Mar 27, 2003
filing date -
Jun 10, 2002
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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.
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