Methods for producing a semifinished part for the manufacture of an optical fiber which is optimized in terms of bending

US9382149B2 · kind B2 · utility

Assignee

• j-plasma GmbH · DE

Inventors

• Lothar Brehm · Jena, DE
• Matthias Auth · Essen, DE
• Jörg Kötzing · Jena, DE

Key dates

• Filing date: May 10, 2012
• Grant date: Jul 5, 2016
• Expiry date: May 10, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/57
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Methods for producing a semifinished part for the manufacture of an optical fiber are disclosed. The methods are optimized in terms of bending. The methods include the steps of providing a shell tube with a shell refractive index which is lower in relation to the light-conducting core. Then, at least one protective, intermediate and/or barrier layer is applied to a radially outermost and/or innermost tube surface of the respective shell tube, wherein a build-up of light-conducting layers is realized on the inner side and/or the outer side of the shell tube. Finally, the shell tubes are joined by collapsing so as to form the semifinished part.