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公开(公告)号：US20240230986A1
公开(公告)日：2024-07-11
申请号：US18613402
申请日：2024-03-22
发明人： Kazunori MUKASA
IPC分类号： G02B6/02 , C03B37/012 , C03B37/014 , C03B37/027
CPC分类号： G02B6/02395 , C03B37/01211 , C03B37/014 , C03B37/027 , C03B2201/31 , C03B2201/50 , C03B2203/22
摘要： An optical fiber includes: a core portion including a center core doped with germanium; and a cladding portion having a refractive index lower than a maximum refractive index of the core portion and surrounding an outer periphery of the core portion. The cladding portion has a relative refractive index difference of a positive value equal to or lower than 0.1% with respect to pure silica glass, an alkali metal element is doped in the center core to be diffused, and a peak of a concentration distribution of the alkali metal element in a radial direction is positioned at a distance away from the center of the center core by two times or more a radius of the center core.
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公开(公告)号：US11714228B2
公开(公告)日：2023-08-01
申请号：US17445115
申请日：2021-08-16
发明人： Kazunori Mukasa
IPC分类号： C03B37/014 , G02B6/02 , G02B6/028 , G02B6/036
CPC分类号： G02B6/028 , G02B6/02238 , G02B6/02395 , G02B6/036 , C03B37/014 , C03B2201/31 , C03B2203/22 , C03B2203/23 , G02B6/0365
摘要： An optical fiber includes: a central core portion; an intermediate layer; a trench layer; and a cladding portion. Further, relationships Δ1>Δ2>Δ3 and 0>Δ3 are satisfied, where Δ1, Δ2, and Δ3 are a relative refractive-index difference of the central core portion, the intermediate layer, and the trench layer, respectively, with respect to the cladding portion, Δ1 is equal to or larger than 0.34% and equal to or smaller than 0.37%, |Δ3| is equal to or larger than 0.1% and equal to or smaller than 0.25%, Δ1×|Δ3| is equal to or smaller than 0.08%2, a mode field diameter at a wavelength of 1310 nm is equal to or larger than 8.8 μm, and a transmission loss at a wavelength of 1550 nm is equal to or smaller than 0.195 dB/km.
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公开(公告)号：US11702358B2
公开(公告)日：2023-07-18
申请号：US17263643
申请日：2019-07-30
申请人： j-fiber GmbH
发明人： Wolfgang Haemmerle
IPC分类号： C03B37/018
CPC分类号： C03B37/01807 , C03B2201/31 , C03B2207/87
摘要： The invention relates to a method and a device for producing a preform for glass fiber production. The method comprises the steps of providing a carrier gas with a desired, precisely adjusted temperature, loading the carrier gas with halide vapor, mixing the loaded carrier gas with additional gases, and producing the preform in a reaction chamber with substrate.
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公开(公告)号：US20230212057A1
公开(公告)日：2023-07-06
申请号：US18183385
申请日：2023-03-14
发明人： Kazunori MUKASA , Zoltan VARALLYAY , Bence NEMETH , Bela CSENGERI , Zsolt PUSKAS , Peter SZELESTEY , Gabor VARGA
IPC分类号： C03B37/027 , C03C25/106 , G02B6/02
CPC分类号： C03B37/02772 , C03C25/106 , G02B6/02395 , C03B2205/47 , C03B2205/10 , C03B2205/62 , C03B2201/12 , C03B2201/50 , C03B2201/31
摘要： An optical fiber manufacturing method includes: a drawing step of heating one end portion of an optical fiber preform to melt and deform the one end portion and drawing an optical fiber, wherein in the drawing step, drawing is performed while applying pressure to a melted-deformed portion that is melted and deformed.
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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.
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公开(公告)号：US09822035B2
公开(公告)日：2017-11-21
申请号：US15144563
申请日：2016-05-02
申请人： Adam Hokansson , David J Kudelko , Yaowen Li , Joanna Y Ng , Debra A Simoff
发明人： Adam Hokansson , David J Kudelko , Yaowen Li , Joanna Y Ng , Debra A Simoff
IPC分类号： G02B6/02 , C03C25/10 , C03B37/027 , B23K26/364 , B23K26/00 , C03C25/62
CPC分类号： C03C25/1062 , B23K26/359 , B23K26/364 , B23K26/50 , C03B37/027 , C03B2201/21 , C03B2201/22 , C03B2201/31 , C03B2203/22 , C03B2205/20 , C03C25/106 , C03C25/6208 , C03C2218/152 , G02B6/02114 , G02B6/02138 , G02B6/02395 , G02B2006/02161
摘要： A technique is described for fabricating one or more optical devices in a carbon-coated optical fiber. A photosensitive optical fiber is provided having a hermetic carbon coating. Further provided is a laser having a beam output that is configured to inscribe one or more refractive index modulations into the optical fiber through the hermetic carbon layer while leaving the hermetic carbon layer intact. The laser is used to inscribe one or more optical devices into the optical fiber through the hermetic carbon layer.
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公开(公告)号：US09796618B2
公开(公告)日：2017-10-24
申请号：US14796194
申请日：2015-07-10
申请人： CORNING INCORPORATED
发明人： Brett Jason Hoover , Ming-Jun Li
IPC分类号： G02B6/44 , C03B37/027 , C03B37/018 , C03B37/012 , C03B37/014 , C03C25/10 , G02B6/02 , G02B6/028 , G02B6/036
CPC分类号： C03B37/027 , C03B37/01211 , C03B37/01222 , C03B37/01282 , C03B37/0142 , C03B37/01446 , C03B37/01493 , C03B37/01853 , C03B2201/31 , C03B2203/04 , C03B2203/22 , C03B2203/23 , C03B2203/24 , C03B2203/34 , C03C25/1065 , G02B6/02042 , G02B6/02395 , G02B6/0288 , G02B6/03627 , G02B6/4403
摘要： Multi-core optical fiber ribbons and methods for making multi-core optical fiber ribbons are described herein. In one embodiment, a multi-core optical fiber ribbon includes at least two core members formed from silica-based glass and oriented in parallel with one another in a single plane. Adjacent core members have a center-to-center spacing ≧15 microns and a cross-talk between adjacent core members is ≦−25 dB. In this embodiment each core member is single-moded with an index of refraction nc, and a core diameter dc. In an alternative embodiment, each core member is multi-moded and the center-to-center spacing between adjacent core members is ≧25 microns. A single cladding layer is formed from silica-based glass and surrounds and is in direct contact with the core members. The single cladding layer is substantially rectangular in cross section with a thickness ≦400 microns and an index of refraction ncl
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公开(公告)号：US09778413B2
公开(公告)日：2017-10-03
申请号：US15586434
申请日：2017-05-04
申请人： Corning Incorporated
IPC分类号： G02B6/036 , G02B6/02 , C03B37/027 , C03C3/06 , C03C25/10 , G02B6/028 , C03C3/076 , C03C13/04 , C03B37/018
CPC分类号： G02B6/03694 , C03B37/018 , C03B37/027 , C03B2201/20 , C03B2201/24 , C03B2201/31 , C03B2203/222 , C03B2203/23 , C03B2203/24 , C03C3/06 , C03C3/076 , C03C13/045 , C03C13/046 , C03C25/1055 , C03C2201/11 , C03C2201/24 , C03C2201/31 , G02B6/02395 , G02B6/0281 , G02B6/03627 , G02B6/03644
摘要： A single mode optical fiber having a core made from silica and less than or equal to about 11 weight % germania and having a maximum relative refractive index Δ1MAX. The optical fiber also has an inner cladding surrounding the core and having a minimum relative refractive index Δ2MIN, a first outer cladding surrounding the inner cladding and a second outer cladding surrounding the first outer cladding. The viscosity at 1650° C. of the second outer cladding minus the viscosity at 1650° C. of the first outer cladding is greater than 0.1e7 Poise, and Δ1MAX>Δ2MIN. The single mode optical fiber may also have an outer cladding surrounding the inner cladding made from silica or SiON. The first outer cladding has a maximum relative refractive index Δ3MAX, and Δ3MAX>Δ2MIN.
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公开(公告)号：US20170235045A1
公开(公告)日：2017-08-17
申请号：US15586434
申请日：2017-05-04
申请人： Corning Incorporated
CPC分类号： G02B6/03694 , C03B37/018 , C03B37/027 , C03B2201/20 , C03B2201/24 , C03B2201/31 , C03B2203/222 , C03B2203/23 , C03B2203/24 , C03C3/06 , C03C3/076 , C03C13/045 , C03C13/046 , C03C25/1055 , C03C2201/11 , C03C2201/24 , C03C2201/31 , G02B6/02395 , G02B6/0281 , G02B6/03627 , G02B6/03644
摘要： A single mode optical fiber having a core made from silica and less than or equal to about 11 weight % germania and having a maximum relative refractive index Δ1MAX. The optical fiber also has an inner cladding surrounding the core and having a minimum relative refractive index Δ2MIN, a first outer cladding surrounding the inner cladding and a second outer cladding surrounding the first outer cladding. The viscosity at 1650° C. of the second outer cladding minus the viscosity at 1650° C. of the first outer cladding is greater than 0.1e7 Poise, and Δ1MAX>Δ2MIN. The single mode optical fiber may also have an outer cladding surrounding the inner cladding made from silica or SiON. The first outer cladding has a maximum relative refractive index Δ3MAX, and Δ3MAX>Δ2MIN.
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公开(公告)号：US20170219770A1
公开(公告)日：2017-08-03
申请号：US15485619
申请日：2017-04-12
申请人： Corning Incorporated
IPC分类号： G02B6/036 , C03C3/06 , C03C13/04 , G02B6/02 , C03B37/027
CPC分类号： G02B6/03627 , C03B37/02 , C03B37/027 , C03B37/02718 , C03B37/02727 , C03B2201/12 , C03B2201/20 , C03B2201/31 , C03B2203/223 , C03B2203/23 , C03B2203/24 , C03B2205/55 , C03B2205/56 , C03C3/06 , C03C13/045 , C03C13/046 , C03C2201/12 , C03C2201/31 , C03C2213/00 , G02B6/02014
摘要： A single mode optical fiber having a core made from silica and less than or equal to about 6.5 weight % germania and having a maximum relative refractive index Δ1MAX. The optical fiber also has an inner cladding surrounding the core and having a minimum relative refractive index Δ2MIN. A difference between a softening point of the core and a softening point of the inner cladding is less than or equal to about 20° C., and Δ1MAX>Δ2MIN. The single mode optical fiber may also have an outer cladding surrounding the inner cladding made from silica or SiON. The outer cladding has a maximum relative refractive index Δ3MAX, and Δ3MAX>Δ2MIN. A method for manufacturing an optical fiber includes providing a preform to a first furnace, the preform, drawing the optical fiber from the preform, and cooling the drawn optical fiber in a second furnace.
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