公开(公告)号：US20150027170A1

公开(公告)日：2015-01-29

申请号：US14383197

申请日：2012-12-17

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Tetsuya Haruna ,  Masaaki Hirano ,  Yoshiaki Tamura

IPC分类号： C03B37/027 ,  C03B37/025

CPC分类号： C03B37/027 ,  C03B37/0253 ,  C03B2201/07 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/50 ,  C03B2203/02 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/26 ,  C03B2205/40 ,  C03B2205/42 ,  C03B2205/60 ,  C03B2205/72 ,  C03C13/045 ,  C03C25/1061

摘要： Provided is a method for producing an optical fiber having low attenuation and including a core that contains an alkali metal element. An optical fiber preform that includes a core part and a cladding part is drawn with a drawing apparatus 1 to form an optical fiber 30, the core part having an average concentration of an alkali metal element of 5 atomic ppm or more and the cladding part containing fluorine and chlorine. The optical fiber includes a glass portion and resin coating portion and the glass portion is under residual stress that is a compressive stress of 130 MPa or less. During the drawing, the time during which an individual position of the optical fiber preform is maintained at 1500° C. or higher is 110 minutes or less.

摘要翻译： 提供一种具有低衰减的光纤的制造方法，其包含含有碱金属元素的芯。 包括核心部分和包层部分的光纤预制棒被拉伸装置1拉伸以形成光纤30，芯部的碱金属元素的平均浓度为5原子ppm以上，包层部分含有 氟和氯。 光纤包括玻璃部分和树脂涂覆部分，并且玻璃部分处于130MPa或更小的压缩应力的残余应力。 在拉伸过程中，将光纤预制件的单个位置保持在1500℃以上的时间为110分钟以下。

公开(公告)号：US11787727B2

公开(公告)日：2023-10-17

申请号：US15956018

申请日：2018-04-18

申请人： LAWRENCE LIVERMORE NATIONAL SECURITY, LLC

发明人： Derrek Reginald Drachenberg ,  Michael J. Messerly ,  Paul H. Pax ,  John B. Tassano, Jr.

IPC分类号： C03B37/012 ,  C03B37/027 ,  C03B37/03

CPC分类号： C03B37/02736 ,  C03B37/0122 ,  C03B37/01208 ,  C03B37/0279 ,  C03B37/02781 ,  C03B37/03 ,  C03B37/032 ,  C03B2203/42 ,  C03B2205/60

摘要： The fabrication of sleeveless canes utilizes a preform with an array of glass canes in the preform. At least one tube-sleeve encircles the array of glass canes and is secured to the array of glass canes. The array of glass canes is moved into a furnace wherein the array of glass canes is heated. The furnace is maintained at a furnace temperature within the range of 2000° C. to 1700° C. and the array of glass canes is drawn from the furnace. The drawing of the array of glass canes both scales down the glass canes and elongates the glass canes. Maintaining the furnace at a furnace temperature within the range of 2000° C. to 1700° C. assures that the array of glass canes and the glass canes maintain their original shape.

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：US20240327267A1

公开(公告)日：2024-10-03

申请号：US18471180

申请日：2023-09-20

申请人： Sterlite Technologies Limited

发明人： Debangshu Debnath ,  SAIKISHORE CHADARAM ,  SANDEEP GAIKWAD ,  SUDHAKAR REDDY

IPC分类号： C03B37/014 ,  C03B37/012 ,  C03B37/027

CPC分类号： C03B37/0146 ,  C03B37/01288 ,  C03B37/027 ,  C03B2205/60

摘要： The present disclosure relates to a method and an extrusion apparatus (100, 200) to manufacture a soot preform (130). The extrusion apparatus (100 and 200) includes a feed-hopper (104) to feed silica slurry (102) which is pushed within the barrel (106), an iris frame (116) exhibiting a variable diameter to control a diameter of the soot preform (130), drying furnace (118), debinding furnace (122) eliminates moisture and one or more stabilized binders in the soot preform (130) to obtain a glass preform (138) from which an optical fiber (142) is drawn.

公开(公告)号：US11987518B2

公开(公告)日：2024-05-21

申请号：US17345503

申请日：2021-06-11

申请人： CORNING INCORPORATED

发明人： Nikolaos Pantelis Kladias ,  Chunfeng Zhou

IPC分类号： C03B37/027 ,  C03B37/03

CPC分类号： C03B37/02718 ,  C03B37/032 ,  C03B2205/55 ,  C03B2205/60

摘要： A cooling device system for cooling optical fiber includes a plurality of bodies (202), each body having a top surface (210) and an opposing bottom surface (212); an opening (204) within each of the plurality of bodies extending from the top surface through the body to the bottom surface, wherein the opening is configured to pass an optical fiber (10) through the body; and one or more air outlets (208) within the body configured to direct air to contact the optical fiber as it passes through the opening, wherein the air flowing out of the one or more openings has an average velocity of about 20 m/s to about 350 m/s.

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.