Method for the unidirectional and or bidirectional removal of a cladding layer of an optical preform

US9475729B2 · kind B2 · utility

Assignee

• j-plasma GmbH · DE

Inventors

• Jörg Kötzing · Jena, DE
• Robert Hanf · Eisenberg, DE
• Lothar Brehm · Jena, DE

Key dates

• Filing date: Oct 23, 2015
• Grant date: Oct 25, 2016
• Expiry date: Oct 23, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/028
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention describes a method for the removal of glass where the parameters of the removal process are set over the length of the substrate (preform) so that a uniform removal can be achieved over the complete substrate length.