公开(公告)号：US20200255319A1

公开(公告)日：2020-08-13

申请号：US16782319

申请日：2020-02-05

申请人： CORNING INCORPORATED

发明人： Stephen Mitchell Carlton ,  Paul Andrew Chludzinski ,  Jonathan Robert Greveling ,  Nikolaos Pantelis Kladias ,  Robert Walter Nason ,  Abhijit Rao

IPC分类号： C03B37/014

摘要： Vaporizers and systems for vaporizing liquid precursor for forming glass optical fiber preforms are provided. The vaporizer includes an expansion chamber at least partially enclosed by a side wall, the expansion chamber comprising an upper end and a lower end with the side wall disposed between the upper end and the lower end. The vaporizer further includes a closed-loop liquid delivery conduit positioned in the expansion chamber proximate to the upper end of the expansion chamber, wherein the closed-loop liquid delivery conduit comprises a plurality of nozzles oriented to direct a spray of liquid precursor onto an inner surface of the side wall. Further, the vaporizer includes at least one supply conduit positioned proximate the upper end of the expansion chamber and coupled to the closed-loop liquid delivery conduit, and a vapor delivery outlet coupled to the expansion chamber and configured to direct vaporized liquid precursor from the expansion chamber.

公开(公告)号：US09932260B2

公开(公告)日：2018-04-03

申请号：US15337591

申请日：2016-10-28

申请人： Corning Incorporated

发明人： Kenneth Duane Billings ,  Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Robert Clark Moore ,  Pushkar Tandon

IPC分类号： C03B37/027 ,  C03B37/025 ,  G02B6/036 ,  C03C25/10 ,  G02B6/02

CPC分类号： C03B37/02718 ,  C03B37/0253 ,  C03B37/02727 ,  C03B37/029 ,  C03B37/032 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2201/50 ,  C03B2203/224 ,  C03B2203/24 ,  C03B2203/26 ,  C03B2205/42 ,  C03B2205/44 ,  C03B2205/55 ,  C03B2205/56 ,  C03B2205/60 ,  C03C25/106 ,  G02B6/02004 ,  G02B6/02009 ,  G02B6/0281 ,  G02B6/03622 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03694

摘要： According to some embodiments a method of processing an optical fiber comprises the steps of: (i) drawing the fiber at a drawing rate of at least 30 m/sec; and (ii) cooling the drawn fiber in a gas at an average cooling rate less than 5000° C./s, such that said cooling reduces the temperature of the fiber from an entering temperature in the range between 1500° C. and 1700° C. to another temperature in the range between 1200° C. and 1400° C., the gas being at a temperature between 800° C. and 1500° C.; and the thermal conductivity κ of the gas being not greater than 1.5×10−4 cal/cm-s-K for at least one temperature within a range of 800° C. to 1500° C. at one atm (atmosphere) pressure absolute.

公开(公告)号：US11125937B2

公开(公告)日：2021-09-21

申请号：US16124775

申请日：2018-09-07

申请人： Corning Incorporated

发明人： Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Brian Lee Harper ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

IPC分类号： C03B37/014 ,  C03B37/018 ,  C03B37/025 ,  G02B6/028 ,  G02B6/02 ,  G02B6/036

摘要： An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

公开(公告)号：US20190004245A1

公开(公告)日：2019-01-03

申请号：US16124775

申请日：2018-09-07

申请人： Corning Incorporated

发明人： Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Brian Lee Harper ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

IPC分类号： G02B6/028 ,  C03B37/014 ,  C03B37/018 ,  G02B6/02 ,  G02B6/036 ,  C03B37/025

摘要： An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

公开(公告)号：US20180079677A1

公开(公告)日：2018-03-22

申请号：US15702961

申请日：2017-09-13

申请人： Corning Incorporated

发明人： Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Brian Lee Harper ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

IPC分类号： C03B37/014 ,  C03B37/018 ,  G02B6/036 ,  G02B6/028 ,  G02B6/02

CPC分类号： G02B6/0286 ,  C03B37/01413 ,  C03B37/01446 ,  C03B37/01466 ,  C03B37/018 ,  C03B37/025 ,  C03B2201/08 ,  C03B2201/20 ,  C03B2207/70 ,  G02B6/02214 ,  G02B6/0283 ,  G02B6/03627 ,  G02B6/03644

摘要： An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

公开(公告)号：US10146008B2

公开(公告)日：2018-12-04

申请号：US15702961

申请日：2017-09-13

申请人： Corning Incorporated

发明人： Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Brian Lee Harper ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney ,  Pushkar Tandon

IPC分类号： G02B6/028 ,  G02B6/036 ,  C03B37/014 ,  C03B37/018 ,  G02B6/02 ,  C03B37/025

摘要： An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

公开(公告)号：US20170297947A1

公开(公告)日：2017-10-19

申请号：US15337591

申请日：2016-10-28

申请人： Corning Incorporated

发明人： Kenneth Duane Billings ,  Dana Craig Bookbinder ,  Paul Andrew Chludzinski ,  Robert Clark Moore ,  Pushkar Tandon

IPC分类号： C03B37/025 ,  G02B6/02 ,  C03C25/10 ,  G02B6/036

CPC分类号： C03B37/02718 ,  C03B37/0253 ,  C03B37/02727 ,  C03B37/029 ,  C03B37/032 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2201/50 ,  C03B2203/224 ,  C03B2203/24 ,  C03B2203/26 ,  C03B2205/42 ,  C03B2205/44 ,  C03B2205/55 ,  C03B2205/56 ,  C03B2205/60 ,  C03C25/106 ,  G02B6/02004 ,  G02B6/02009 ,  G02B6/0281 ,  G02B6/03622 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03694

摘要： According to some embodiments a method of processing an optical fiber comprises the steps of: (i) drawing the fiber at a drawing rate of at least 30 m/sec; and (ii) cooling the drawn fiber in a gas at an average cooling rate less than 5000° C./s, such that said cooling reduces the temperature of the fiber from an entering temperature in the range between 1500° C. and 1700° C. to another temperature in the range between 1200° C. and 1400° C., the gas being at a temperature between 800° C. and 1500° C.; and the thermal conductivity κ of the gas being not greater than 1.5×10−4 cal/cm-s-K for at least one temperature within a range of 800° C. to 1500° C. at one atm (atmosphere) pressure absolute.

公开(公告)号：US20170101335A1

公开(公告)日：2017-04-13

申请号：US15271610

申请日：2016-09-21

申请人： Corning Incorporated

发明人： Paul Andrew Chludzinski ,  Dominick Fiordimalva

IPC分类号： C03B37/012

CPC分类号： C03B37/01222 ,  C03B37/01211 ,  C03B37/01248 ,  C03B37/027 ,  C03B2201/02 ,  C03B2201/06 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/224 ,  C03B2203/225 ,  C03B2203/23 ,  C03B2203/34 ,  Y02P40/57

摘要： The present disclosure provides optical fiber preforms formed from core canes having large core-clad ratio, intermediate core-cladding assemblies, and methods for making the preforms and core cladding assemblies. The preforms are made with capped core canes. The capping material has a coefficient of thermal expansion less than the coefficient of thermal expansion of the core cane and more closely matched to or lower than the coefficient of thermal expansion of the surrounding cladding monolith in a cane-in-soot process. Presence of the cap reduces stresses that arise from differential thermal expansion of the core cane and cladding materials and leads to preforms having low defect concentration and low probability of failure during subsequent thermal processing steps.

公开(公告)号：US11649186B2

公开(公告)日：2023-05-16

申请号：US16782319

申请日：2020-02-05

申请人： CORNING INCORPORATED

发明人： Stephen Mitchell Carlton ,  Paul Andrew Chludzinski ,  Jonathan Robert Greveling ,  Nikolaos Pantelis Kladias ,  Robert Walter Nason ,  Abhijit Rao

IPC分类号： C03B37/014

CPC分类号： C03B37/0142 ,  C03B2207/34 ,  C03B2207/85

摘要： Vaporizers and systems for vaporizing liquid precursor for forming glass optical fiber preforms are provided. The vaporizer includes an expansion chamber at least partially enclosed by a side wall, the expansion chamber comprising an upper end and a lower end with the side wall disposed between the upper end and the lower end. The vaporizer further includes a closed-loop liquid delivery conduit positioned in the expansion chamber proximate to the upper end of the expansion chamber, wherein the closed-loop liquid delivery conduit comprises a plurality of nozzles oriented to direct a spray of liquid precursor onto an inner surface of the side wall. Further, the vaporizer includes at least one supply conduit positioned proximate the upper end of the expansion chamber and coupled to the closed-loop liquid delivery conduit, and a vapor delivery outlet coupled to the expansion chamber and configured to direct vaporized liquid precursor from the expansion chamber.

公开(公告)号：US11577982B2

公开(公告)日：2023-02-14

申请号：US15271610

申请日：2016-09-21

申请人： Corning Incorporated

发明人： Paul Andrew Chludzinski ,  Dominick Fiordimalva

IPC分类号： C03B37/012 ,  C03B37/027

摘要： The present disclosure provides optical fiber preforms formed from core canes having large core-clad ratio, intermediate core-cladding assemblies, and methods for making the preforms and core cladding assemblies. The preforms are made with capped core canes. The capping material has a coefficient of thermal expansion less than the coefficient of thermal expansion of the core cane and more closely matched to or lower than the coefficient of thermal expansion of the surrounding cladding monolith in a cane-in-soot process. Presence of the cap reduces stresses that arise from differential thermal expansion of the core cane and cladding materials and leads to preforms having low defect concentration and low probability of failure during subsequent thermal processing steps.