The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 31, 2024
Filed:
Jul. 15, 2020
Heraeus Quarzglas Gmbh & Co. KG, Hanau, DE;
Heraeus Quartz North America Llc, Buford, GA (US);
Manuel Rosenberger, Hanau, DE;
Jan Vydra, Hanau, DE;
Kai Huei Chang, Alpharetta, GA (US);
Qiulin Ma, Decatur, GA (US);
HERAEUS QUARZGLAS GMBH & CO. KG, Hanau, DE;
HERAEUS QUARTZ NORTH AMERICA LLC, Buford, GA (US);
Abstract
To achieve a high degree of precision and an exact positioning of anti-resonant elements in a sufficiently stable and reproducible manner in an anti-resonant hollow-core fiber which has a hollow core extending along a fiber longitudinal axis and an inner jacket region that surrounds the hollow core, formation of anti-resonant element precursors includes formation of elongated pressure chambers, each of which adjoins a wall deformable under pressure and heat in the region of target positions of the anti-resonant elements. A section of the deformable wall is caused to protrude in the direction of a cladding tube inner bore, thereby forming an anti-resonant element or a precursor for same, while carrying out a process of elongating a primary preform to form the hollow-core fiber or further processing the primary preform to a secondary preform from which the hollow-core fiber is drawn.