BR9002274A - Sistema de revestimento de meio de transmissao de fibra otica - Google Patents

Sistema de revestimento de meio de transmissao de fibra otica

Info

Publication number
BR9002274A
BR9002274A BR909002274A BR9002274A BR9002274A BR 9002274 A BR9002274 A BR 9002274A BR 909002274 A BR909002274 A BR 909002274A BR 9002274 A BR9002274 A BR 9002274A BR 9002274 A BR9002274 A BR 9002274A
Authority
BR
Brazil
Prior art keywords
fiber optic
transmission media
coating system
optic transmission
media coating
Prior art date
Application number
BR909002274A
Other languages
English (en)
Inventor
John Thomas Chapin
Addison Guy Hardee Jr
Lisa Larsen-Moss
Charles M Leshe
Bob J Overton
John W Shea
Carl R Taylor
John Michael Turnipseed
Original Assignee
American Telephone & Telegraph
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Telephone & Telegraph filed Critical American Telephone & Telegraph
Publication of BR9002274A publication Critical patent/BR9002274A/pt

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00Producing optical elements, e.g. lenses or prisms
    • B29D11/00663Production of light guides
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02Optical fibres with cladding with or without a coating
    • G02B6/02395Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Means specially adapted for strengthening or protecting the cables
    • G02B6/443Protective covering
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439Auxiliary devices
    • G02B6/4457Bobbins; Reels
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479Manufacturing methods of optical cables
    • G02B6/4486Protective covering

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
BR909002274A 1989-05-15 1990-05-15 Sistema de revestimento de meio de transmissao de fibra otica BR9002274A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/351,984 US4962992A (en) 1989-05-15 1989-05-15 Optical transmission media and methods of making same

Publications (1)

Publication Number Publication Date
BR9002274A true BR9002274A (pt) 1991-08-06

Family

ID=23383283

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909002274A BR9002274A (pt) 1989-05-15 1990-05-15 Sistema de revestimento de meio de transmissao de fibra otica

Country Status (10)

Country Link
US (1) US4962992A (pt)
EP (1) EP0398564B1 (pt)
JP (1) JP2828733B2 (pt)
KR (1) KR0171887B1 (pt)
CN (1) CN1026919C (pt)
AU (1) AU618478B2 (pt)
BR (1) BR9002274A (pt)
CA (1) CA2016799C (pt)
DE (1) DE69021635T2 (pt)
DK (1) DK0398564T3 (pt)

Families Citing this family (106)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1321671C (en) * 1989-05-11 1993-08-24 Paul J. Shustack Ultraviolet radiation-curable coatings for optical fibers and optical fibers coated therewith
US5536529A (en) * 1989-05-11 1996-07-16 Borden, Inc. Ultraviolet radiation-curable coatings for optical fibers and optical fibers coated therewith
US5352712A (en) * 1989-05-11 1994-10-04 Borden, Inc. Ultraviolet radiation-curable coatings for optical fibers
US5062685A (en) * 1989-10-11 1991-11-05 Corning Incorporated Coated optical fibers and cables and method
US5459175A (en) * 1990-11-28 1995-10-17 Loctite Corporation Optical fiber primary coatings and fibers coated therewith
US5371181A (en) * 1990-11-28 1994-12-06 Loctite Corporation Thiol-ene compositions with improved cure speed retention
CA2082614A1 (en) * 1992-04-24 1993-10-25 Paul J. Shustack Organic solvent and water resistant, thermally, oxidatively and hydrolytically stable radiation-curable coatings for optical fibers, optical fibers coated therewith and processes for making same
US5257339A (en) * 1992-07-29 1993-10-26 At&T Bell Laboratories Package of optical fiber suitable for high speed payout
US6240230B1 (en) 1997-03-06 2001-05-29 Dsm N.V. Protective materials for optical fibers which do not substantially discolor
JPH09243877A (ja) * 1996-03-12 1997-09-19 Nippon Telegr & Teleph Corp <Ntt> 光ファイバ心線
EP0892766A1 (en) * 1996-04-10 1999-01-27 Dsm N.V. A method of increasing the adhesion between radiation-cured, inner primary coatings and optical glass fibers
EP0976692B2 (en) * 1997-01-20 2004-12-29 Sumitomo Electric Industries, Ltd. Optical fiber equipped with cladding and method of manufacturing the same
US6579618B1 (en) * 1997-08-15 2003-06-17 Dsm N.V. Coated optical fiber and radiation curable resin composition
US6215934B1 (en) 1998-10-01 2001-04-10 Lucent Technologies, Inc. Coated optical fiber with improved strippability
US6215931B1 (en) * 1999-01-26 2001-04-10 Alcatel Flexible thermoplastic polyolefin elastomers for buffering transmission elements in a telecommunications cable
EP1227350A4 (en) * 1999-11-05 2005-06-01 Sumitomo Electric Industries OPTICAL FIBER COATED
KR20020067056A (ko) 1999-12-30 2002-08-21 코닝 인코포레이티드 1차 광섬유 코팅의 급속 경화방법
WO2001049793A1 (en) 1999-12-30 2001-07-12 Corning Incorporated Composition containing tackifier and method of modifying time-sensitive rheological properties of optical fiber coating
DE60032944T2 (de) 1999-12-30 2007-10-18 Corning Inc. Sekundärbeschichtung für lichtleitfasern
WO2001049625A1 (en) 1999-12-30 2001-07-12 Corning Incorporated Optical fibers prepared with a primary coating composition including a monomer with a pendant hydroxyl functional group
US6775451B1 (en) 1999-12-30 2004-08-10 Corning Incorporated Secondary coating composition for optical fibers
JP2003531799A (ja) 2000-05-01 2003-10-28 コーニング インコーポレイテッド 光ファイバ被覆
US6577802B1 (en) 2000-07-13 2003-06-10 Corning Incorporated Application of silane-enhanced adhesion promoters for optical fibers and fiber ribbons
US6579914B1 (en) 2000-07-14 2003-06-17 Alcatel Coating compositions for optical waveguides and optical waveguides coated therewith
US6584263B2 (en) 2000-07-26 2003-06-24 Corning Incorporated Optical fiber coating compositions and coated optical fibers
US6553169B2 (en) 2000-11-29 2003-04-22 Corning Incorporated Optical fiber coating compositions and coated optical fibers
US6602601B2 (en) 2000-12-22 2003-08-05 Corning Incorporated Optical fiber coating compositions
WO2002051763A1 (fr) * 2000-12-22 2002-07-04 Sumitomo Electric Industries, Ltd. Fibre optique gainee et son procede de production
AU2002225536A1 (en) 2000-12-29 2002-07-16 Dsm Ip Assets B.V. Non-crystal-forming oligomers for use in radiation-curable fiber optic coatings
US20030077059A1 (en) * 2001-03-13 2003-04-24 Ching-Kee Chien Optical fiber coating compositions
US6707977B2 (en) * 2001-03-15 2004-03-16 Corning Incorporated All fiber polarization mode dispersion compensator
US6470128B1 (en) 2001-03-30 2002-10-22 Alcatel UV-curable coating composition for optical fiber for a fast cure and with improved adhesion to glass
US6810187B2 (en) * 2001-07-27 2004-10-26 Corning Incorporated Optical waveguide thermoplastic elastomer coating
CA2483308C (en) * 2002-04-24 2010-08-24 Pirelli & C. S.P.A. Optical fiber with reduced attenuation loss
DK1497686T3 (en) * 2002-04-24 2015-05-04 Prysmian Spa Method of controlling attenuation loss in an optical fiber caused by microbending
AU2002309326A1 (en) * 2002-04-24 2003-11-10 Dsm Ip Assets B.V. Radiation curable coating composition for optical fiber with reduced attenuation loss
US7238386B2 (en) * 2002-05-09 2007-07-03 Hexion Specialty Chemicals, Inc. Methods for making and using point lump-free compositions and products coated with point lump-free compositions
US6862392B2 (en) 2003-06-04 2005-03-01 Corning Incorporated Coated optical fiber and curable compositions suitable for coating optical fiber
US7207732B2 (en) * 2003-06-04 2007-04-24 Corning Incorporated Coated optical fiber and curable compositions suitable for coating optical fiber
US7050688B2 (en) * 2003-07-18 2006-05-23 Corning Cable Systems Llc Fiber optic articles, assemblies, and cables having optical waveguides
US7715675B2 (en) * 2003-07-18 2010-05-11 Corning Incorporated Optical fiber coating system and coated optical fiber
AU2003304518B2 (en) * 2003-09-30 2010-09-09 Prysmian Cavi E Sistemi Energia S.R.L. Telecommunication loose tube optical cable with reduced diameter
US20050207716A1 (en) * 2004-03-17 2005-09-22 Kariofilis Konstadinidis Optical fiber cable coatings
US7423105B2 (en) * 2005-09-30 2008-09-09 Corning Incorporated Fast curing primary optical fiber coatings
US8093322B2 (en) * 2005-10-27 2012-01-10 Corning Incorporated Non-reactive additives for fiber coatings
US7257299B2 (en) * 2005-11-30 2007-08-14 Corning Incorporated Optical fiber ribbon with improved stripability
US7289706B2 (en) * 2005-11-30 2007-10-30 Corning Incorporated Optical fiber ribbon with improved stripability
EP2305617B1 (en) * 2006-12-14 2014-01-22 DSM IP Assets B.V. D1381 Supercoatings for optical fiber
WO2008076297A1 (en) * 2006-12-14 2008-06-26 Dsm Ip Assets B.V. D1378 ca radiation curable primary coating for optical fiber
RU2439010C2 (ru) * 2006-12-14 2012-01-10 ДСМ Ай Пи ЭССЕТС Б.В. Отверждаемое излучением первичное покрытие d1379 p для оптического волокна
JP2010509643A (ja) * 2006-12-14 2010-03-25 ディーエスエム アイピー アセッツ ビー.ブイ. D1365bj光ファイバのための放射線硬化性一次被覆
RU2436822C2 (ru) * 2006-12-14 2011-12-20 ДСМ Ай Пи ЭССЕТС Б.В. Отверждаемое излучением вторичное покрытие d 1370 r для оптического волокна
CN101535200B (zh) * 2006-12-14 2011-10-26 帝斯曼知识产权资产管理有限公司 光纤上的d1364bt次级涂层
EP2091883B1 (en) 2006-12-14 2011-02-16 DSM IP Assets B.V. D1364 bt secondary coating on optical fiber
DE602007013605D1 (de) * 2006-12-14 2011-05-12 Dsm Ip Assets Bv Strahlungshärtbare d 1368 cr-grundierbeschichtung für optische fasern
US20080226916A1 (en) * 2006-12-14 2008-09-18 Paulus Antonius Maria Steeman D1363 bt radiation curable primary coatings on optical fiber
JP2008224744A (ja) * 2007-03-08 2008-09-25 Furukawa Electric Co Ltd:The 光ファイバ心線
RU2487839C2 (ru) * 2007-11-29 2013-07-20 Корнинг Инкорпорейтед Отверждение волокна протяженными излучателями
EP2340451A2 (en) 2008-09-26 2011-07-06 Corning Incorporated High numerical aperture multimode optical fiber
US8314408B2 (en) * 2008-12-31 2012-11-20 Draka Comteq, B.V. UVLED apparatus for curing glass-fiber coatings
US20100220966A1 (en) 2009-02-27 2010-09-02 Kevin Wallace Bennett Reliability Multimode Optical Fiber
JP2012533771A (ja) 2009-07-17 2012-12-27 コーニング ケーブル システムズ リミテッド ライアビリティ カンパニー 光ファイバリボン及び低オリゴマー含有量を有するリボンマトリックス材料
US8406596B2 (en) * 2009-08-12 2013-03-26 Corning Incorporated Optical fiber containing multi-layered coating system
US20110188822A1 (en) * 2010-02-04 2011-08-04 Ofs Fitel, Llc Optical fiber coatings for reducing microbend losses
US8385703B2 (en) 2010-03-02 2013-02-26 Corning Incorporated High numerical aperture multimode optical fiber
EP2388239B1 (en) 2010-05-20 2017-02-15 Draka Comteq B.V. Curing apparatus employing angled UV-LEDs
US8871311B2 (en) 2010-06-03 2014-10-28 Draka Comteq, B.V. Curing method employing UV sources that emit differing ranges of UV radiation
US20110300367A1 (en) 2010-06-07 2011-12-08 Ching-Kee Chien Optical Fiber With Photoacid Coating
DK2418183T3 (en) 2010-08-10 2018-11-12 Draka Comteq Bv Method of curing coated glass fibers which provides increased UVLED intensity
JP5533825B2 (ja) * 2011-09-13 2014-06-25 住友電気工業株式会社 光ファイバ製造方法および光ファイバ
WO2013039751A1 (en) 2011-09-16 2013-03-21 Corning Incorporated Few mode optical fibers for mode division multiplexing
JP5255690B2 (ja) * 2011-12-27 2013-08-07 古河電気工業株式会社 光ファイバ着色心線、光ファイバテープ心線および光ファイバケーブル
US8848285B2 (en) 2012-01-12 2014-09-30 Corning Incorporated Few mode optical fibers for Er doped amplifiers, and amplifiers using such
US9678247B2 (en) 2012-05-08 2017-06-13 Corning Incorporated Primary optical fiber coating composition containing non-radiation curable component
US9197030B2 (en) 2012-07-31 2015-11-24 Corning Incorporated Few mode rare earth doped optical fibers for optical amplifiers, and amplifiers using such fibers
US9057814B2 (en) 2013-03-28 2015-06-16 Corning Incorporated Large effective area fiber with low bending losses
US9057817B2 (en) 2013-04-15 2015-06-16 Corning Incorporated Low diameter optical fiber
US9383511B2 (en) 2013-05-02 2016-07-05 Corning Incorporated Optical fiber with large mode field diameter and low microbending losses
US9488774B2 (en) 2014-04-01 2016-11-08 Corning Incorporated Primary optical fiber coating composition containing non-radiation curable component
US9891379B2 (en) 2014-11-14 2018-02-13 Corning Incorporated Optical fiber coating compositions with acrylic polymers
US20160177092A1 (en) 2014-12-18 2016-06-23 Corning Incorporated Optical fiber coating composition with non-reactive reinforcing agent
US10604659B2 (en) 2015-06-08 2020-03-31 Dsm Ip Assets B.V. Liquid, hybrid UV/VIS radiation curable resin compositions for additive fabrication
EP3567428B1 (en) 2015-10-01 2021-06-23 DSM IP Assets B.V. Liquid, hybrid uv/vis radiation curable resin compositions for additive fabrication
EP3391388B1 (de) * 2015-12-18 2020-07-01 LEONI Kabel GmbH Kabel sowie verfahren zur herstellung des kabels
WO2017173296A1 (en) 2016-04-01 2017-10-05 Dsm Ip Assets B.V. Multi-layered coated colored optical fibers
EP3630693A1 (en) 2017-06-02 2020-04-08 DSM IP Assets B.V. Thermally resistant radiation curable coatings for optical fiber
JP2019129005A (ja) * 2018-01-22 2019-08-01 住友電気工業株式会社 被覆電線および多芯ケーブル
US11181686B2 (en) 2018-04-30 2021-11-23 Corning Incorporated Small diameter low attenuation optical fiber
CN112400127B (zh) 2018-04-30 2023-05-23 康宁股份有限公司 小直径低衰减光纤
CN112424658A (zh) 2018-04-30 2021-02-26 康宁股份有限公司 外直径小的低衰减光纤
US10775557B2 (en) 2018-05-03 2020-09-15 Corning Incorporated Fiber coatings with low pullout force
US10689544B2 (en) 2018-05-03 2020-06-23 Corning Incorporated Fiber coatings with low pullout force
WO2019231492A1 (en) 2018-06-01 2019-12-05 Dsm Ip Assets, B.V. Radiation curable compositions for coating optical fiber via alternative oligomers and the coatings produced therefrom
EP3857275A4 (en) 2018-09-28 2022-10-12 Corning Research & Development Corporation SMALL DIAMETER FIBER OPTIC CABLES WITH LOW FRICTION COATS AND OPTICAL FIBERS WITH REDUCED COAT AND COATING DIAMETER
CN113165971A (zh) 2018-12-03 2021-07-23 Ms控股有限公司 用于涂布光纤的填充式可辐射固化组合物以及由其产生的涂层
US11036000B2 (en) 2019-01-16 2021-06-15 Corning Incorporated Optical fiber cable with high fiber count
JP2022533793A (ja) 2019-05-24 2022-07-25 コベストロ (ネザーランズ) ビー.ヴィー. 強化された高速加工性を備えた光ファイバーをコーティングするための放射線硬化性組成物
US11932571B2 (en) 2019-05-24 2024-03-19 Covestro (Netherland) B.V. Radiation curable compositions for coating optical fiber with enhanced high-speed processability
WO2021021971A1 (en) 2019-07-31 2021-02-04 Dsm Ip Assets B.V. Radiation curable compositions with multi-functional long-armed oligomers for coating optical fibers
US11194107B2 (en) 2019-08-20 2021-12-07 Corning Incorporated High-density FAUs and optical interconnection devices employing small diameter low attenuation optical fiber
CN114930218B (zh) 2020-01-07 2024-05-03 康宁股份有限公司 具有高的机械可靠性的半径减小的光纤
CN115190871A (zh) 2020-01-17 2022-10-14 康宁股份有限公司 具有低损耗和微弯曲敏感度的涂层直径减小的氯掺杂二氧化硅光纤
WO2021231083A1 (en) 2020-05-12 2021-11-18 Corning Incorporated Reduced diameter single mode optical fibers with high mechanical reliability
CN111707206B (zh) * 2020-06-04 2022-03-18 哈尔滨工程大学 一种带位置检测功能的量子点光纤微弯传感器
WO2022002909A1 (en) 2020-06-30 2022-01-06 Covestro (Netherlands) B.V. Viscosity index improvers in optical fiber coatings
WO2023205223A1 (en) 2022-04-21 2023-10-26 Covestro (Netherlands) B.V. Radiation curable compositions for coating optical fibers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105284A (en) * 1976-05-10 1978-08-08 Corning Glass Works Buffered optical waveguide fiber
US4324575A (en) * 1980-08-11 1982-04-13 Bell Telephone Laboratories, Incorporated Low TG soft UV-curable coatings
JPS58211707A (ja) * 1982-06-04 1983-12-09 Nippon Telegr & Teleph Corp <Ntt> 被覆光フアイバ
GB2145841B (en) * 1983-09-01 1987-04-01 American Telephone & Telegraph Coated optical fiber
NL8502402A (nl) * 1985-09-03 1987-04-01 Philips Nv Optische vezel voorzien van een kunststofbedekking, en werkwijze en inrichting voor de vervaardiging van een dergelijke optische vezel.
NL8702395A (nl) * 1987-10-08 1989-05-01 Philips Nv Optische vezel voorzien van een kunststofbedekking.
US4900126A (en) * 1988-06-30 1990-02-13 American Telephone & Telegraph Co. Bonded array of transmission media

Also Published As

Publication number Publication date
EP0398564A2 (en) 1990-11-22
AU5487690A (en) 1990-11-15
CA2016799A1 (en) 1990-11-15
EP0398564A3 (en) 1991-07-17
US4962992A (en) 1990-10-16
DE69021635D1 (de) 1995-09-21
JPH039311A (ja) 1991-01-17
DK0398564T3 (da) 1995-09-18
CN1047394A (zh) 1990-11-28
KR900018709A (ko) 1990-12-22
AU618478B2 (en) 1991-12-19
JP2828733B2 (ja) 1998-11-25
DE69021635T2 (de) 1996-01-18
EP0398564B1 (en) 1995-08-16
CA2016799C (en) 1994-12-13
CN1026919C (zh) 1994-12-07
KR0171887B1 (ko) 1999-05-01

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FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

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