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1. 发明申请

US20220227656A1 METHODS FOR PRODUCING A HOLLOW-CORE FIBER AND FOR PRODUCING A PREFORM FOR A HOLLOW-CORE FIBER 有权
公开(公告)号：US20220227656A1
公开(公告)日：2022-07-21
申请号：US17617779
申请日：2020-07-15
申请人： HERAEUS QUARZGLAS GMBH & CO. KG , HERAEUS QUARTZ NORTH AMERICA LLC
发明人： Manuel Rosenberger , Jan Vydra , Kai Huei Chang , Qiulin Ma
IPC分类号： C03B37/012 , C03B37/027
摘要： 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; forming a number of precursors for anti-resonant elements at target positions of the cladding tube wall; 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 from which the hollow-core fiber is drawn. 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 formation of the anti-resonant element precursors includes the formation of elongated pressure chambers, each of which adjoins a wall that can be deformed under pressure and heat in the region of the target positions of the anti-resonant elements and which cause a section of the deformable wall to protrude in the direction of the cladding tube inner bore under the effect of pressure and heat, thereby forming an anti-resonant element or a precursor for same, while carrying out a process according to step (c).

2. 发明授权

US10118854B2 Tubular semifinished product for producing an optical fiber 有权
公开(公告)号：US10118854B2
公开(公告)日：2018-11-06
申请号：US14711000
申请日：2015-05-13
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Ralph Sattmann , Jan Vydra , Michael Huenermann
IPC分类号： C03B37/012 , C03B37/027 , C03C13/04 , G02B6/036 , C03B37/018
摘要： Methods for producing an optical fiber by elongating a silica glass blank or a coaxial group of silica glass components, on the basis of which a fiber is obtained that comprises a core zone, an inner jacket zone enclosing the core zone and a ring zone surrounding the inner jacket zone, are known. In order to provide, proceeding from this, a method, a tubular semi-finished product and a group of coaxial components for the cost-effective production of an optical fiber, which is characterized by a high quality of the boundary between the core and jacket and by low bending sensitivity, according to the invention, the silica glass of the ring zone is provided in the form of a ring zone tube made of silica glass having a mean fluorine content of at least 6000 weight ppm and the tube has an inner tube surface and an outer tube surface, wherein via the wall of the ring zone tube, a radial fluorine concentration profile is adjusted which has an inner fluorine depletion layer with a layer thickness of at least 1 μm and no more than 10 μm, in which the fluorine content decreases toward the inner tube surface and is no more than 3000 weight ppm in a region close to the surface which has a thickness of 1 μm.

3. 发明申请

US20220356108A1 METHODS FOR PRODUCING A HOLLOW-CORE FIBER AND FOR PRODUCING A PREFORM FOR A HOLLOW-CORE FIBER 有权
公开(公告)号：US20220356108A1
公开(公告)日：2022-11-10
申请号：US17621607
申请日：2020-07-15
申请人： HERAEUS QUARZGLAS GMBH & CO. KG
发明人： Manuel Rosenberger , Enrico Ehrentraut , Benjamin Reis , Yusuf Tansel , David Kostka , Ralph Sattmann , Jan Vydra
IPC分类号： C03B37/027 , C03B37/012
摘要： 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 a positioning template is inserted into the cladding tube inner bore in order to arrange the anti-resonant element preforms, said template having holding elements for positioning the anti-resonant element preforms at the target positions.

4. 发明申请

US20150299024A1 TUBULAR SEMIFINISHED PRODUCT FOR PRODUCING AN OPTICAL FIBER 审中-公开
标题翻译：用于生产光纤的管状半透明产品
公开(公告)号：US20150299024A1
公开(公告)日：2015-10-22
申请号：US14711000
申请日：2015-05-13
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Ralph Sattmann , Jan Vydra , Michael Huenermann
IPC分类号： C03B37/027 , G02B6/036 , C03B37/018
CPC分类号： C03B37/02754 , C03B37/01211 , C03B37/01228 , C03B37/01242 , C03B37/018 , C03B37/027 , C03B2201/075 , C03B2201/12 , C03B2201/20 , C03B2201/30 , C03B2201/31 , C03B2203/22 , C03B2203/23 , C03B2205/30 , C03C13/045 , C03C2201/12 , G02B6/03633 , G02B6/0365 , Y10T428/2935
摘要： Methods for producing an optical fiber by elongating a silica glass blank or a coaxial group of silica glass components, on the basis of which a fiber is obtained that comprises a core zone, an inner jacket zone enclosing the core zone and a ring zone surrounding the inner jacket zone, are known. In order to provide, proceeding from this, a method, a tubular semi-finished product and a group of coaxial components for the cost-effective production of an optical fiber, which is characterized by a high quality of the boundary between the core and jacket and by low bending sensitivity, according to the invention, the silica glass of the ring zone is provided in the form of a ring zone tube made of silica glass having a mean fluorine content of at least 6000 weight ppm and the tube has an inner tube surface and an outer tube surface, wherein via the wall of the ring zone tube, a radial fluorine concentration profile is adjusted which has an inner fluorine depletion layer with a layer thickness of at least 1 μm and no more than 10 μm, in which the fluorine content decreases toward the inner tube surface and is no more than 3000 weight ppm in a region close to the surface which has a thickness of 1 μm.
摘要翻译：通过使二氧化硅玻璃坯料或同轴的二氧化硅玻璃成分体组织进行拉伸来制造光纤的方法，基于该光纤获得包含芯部区域的纤维，包围芯部区域的内部护套区域和围绕该区域的环形区域内护套区域，已知。为了提供一种用于成本有效地生产光纤的方法，管状半成品和一组同轴部件，其特征在于芯和夹套之间的边界质量高并且通过低弯曲灵敏度，根据本发明，环区的石英玻璃以平均氟含量为至少6000重量ppm的石英玻璃制成的环形管的形式提供，并且管具有内管表面和外管表面，其中通过环带管的壁，调节径向氟浓度分布，其具有层厚度为至少1μm且不大于10μm的内氟耗尽层，其中氟含量向内管表面减少，并且在接近表面厚度为1μm的区域中不超过3000重量ppm。

5. 发明申请

US20230063663A1 METHOD FOR HOMOGENIZING GLASS 有权
公开(公告)号：US20230063663A1
公开(公告)日：2023-03-02
申请号：US17975146
申请日：2022-10-27
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Stephan Thomas , Jan Vydra , Martin Trommer , Michael Huenermann , Andreas Langner , Walter Lehmann , Stefan Hengster , Klaus Becker
IPC分类号： C03B32/00 , C03B23/04 , C03B23/045
摘要： A method for homogenizing glass includes the method: providing a cylindrical blank composed of the glass having a cylindrical outer surface that extends along a longitudinal axis of the blank between a first end face and a second end face, forming a shear zone in the blank by softening a longitudinal section of the blank and subjecting it to a thermal-mechanical intermixing treatment, and displacing the shear zone along the longitudinal axis of the blank. The displacement of the shear zone along the longitudinal axis of the blank is superimposed by a simultaneous oscillating motion of the shear zone along the longitudinal axis of the blank. The first end of the blank is rotated at a first rotational speed and the second end of the blank is rotated at a second rotational speed. An oscillating motion of the shear zone is generated by periodically varying the first and/or second rotational speed.

6. 发明授权

US11485671B2 Method for homogenizing glass 有权
公开(公告)号：US11485671B2
公开(公告)日：2022-11-01
申请号：US16662667
申请日：2019-10-24
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Stephan Thomas , Jan Vydra , Martin Trommer , Michael Huenermann , Andreas Langner , Walter Lehmann , Stefan Hengster , Klaus Becker
IPC分类号： C03B9/36 , C03B9/38 , C03B17/04 , C03B32/00 , C03B23/04 , C03B23/045
摘要： A method for homogenizing glass includes the method: providing a cylindrical blank composed of the glass having a cylindrical outer surface that extends along a longitudinal axis of the blank between a first end face and a second end face, forming a shear zone in the blank by softening a longitudinal section of the blank and subjecting it to a thermal-mechanical intermixing treatment, and displacing the shear zone along the longitudinal axis of the blank. To enable a radial mixing within the shear zone in addition to the tangential mixing with the lowest possible time and energy input, starting from this method, cylindrical sections of the blank are adjacent to the shear zone on both sides, the first cylindrical section having a first central axis and the second cylindrical section having a second central axis, the first central axis and the second central axis being temporarily non-coaxial with each other.

7. 发明授权

US11459262B2 Method and device for homogenizing glass 有权
公开(公告)号：US11459262B2
公开(公告)日：2022-10-04
申请号：US16662610
申请日：2019-10-24
申请人： Heraeus Quarzglas GmbH & Co. KG
发明人： Stephan Thomas , Jan Vydra , Martin Trommer , Michael Huenermann , Andreas Langner , Walter Lehmann , Stefan Hengster , Klaus Becker
IPC分类号： C03B32/00 , C03B5/183 , C03B20/00 , C03B5/185 , C03B19/14
摘要： A known method for homogenizing glass includes the following steps: providing a cylindrical blank composed of the glass, having a cylindrical outer surface which extends between a first end face and a second end face, forming a shear zone in the blank by softening a longitudinal section of the blank and subjecting it to a thermal-mechanical intermixing treatment, and moving the shear zone along the longitudinal axis of the blank. To reduce the risk of cracks and fractures during homogenizing, it is proposed that a thermal radiation dissipator is used that at least partially surrounds the shear zone, the lateral dimension of which in the direction of the longitudinal axis of the blank is greater than the shear zone and smaller than the length of the blank, the thermal radiation dissipator being moved synchronously with the shear zone along the longitudinal axis of the blank.

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