METHODS FOR PRODUCING A HOLLOW-CORE FIBER AND FOR PRODUCING A PREFORM FOR A HOLLOW-CORE FIBER

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20220234936A1
SERIAL NO

17617487

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Methods are known for producing 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, said jacket region comprising multiple anti-resonant elements. The known methods have the steps of: providing a cladding tube that has a cladding tube inner bore and a cladding tube longitudinal axis along which a cladding tube wall extends that is delimited by an interior and an exterior; providing a number of tubular anti-resonant element preforms; arranging the anti-resonant element preforms at target positions of the interior of the cladding tube wall, thereby forming a primary preform which has a hollow core region and an inner jacket region; and elongating the primary preform in order to form the hollow-core fiber or further processing the primary preform in order to form a secondary preform. The aim of the invention is to achieve a high degree of precision and an exact positioning of the anti-resonant elements in a sufficiently stable and reproducible manner on the basis of the aforementioned methods. This is achieved in that the step of providing and/or arranging the anti-resonant element preforms and/or the process of carrying out a hot-forming process includes a fixation measure and/or a sealing measure using an amorphous SiO2 particle-containing sealing or joining compound.

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Patent Owner(s)

Patent OwnerAddress
HERAEUS QUARZGLAS GMBH & CO KG63450 HANAU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hünermann, Michael Hanau, DE 34 174
Hofmann, Achim Hanau, DE 62 354
Rosenberger, Manuel Hanau, DE 20 11
Sattmann, Ralph Hanau, DE 16 80
Schuster, Kay Hanau, DE 19 16

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