IT1100264B - Controllo dei rulli di trascinamento per produrre perturbazioni diametrali in una guida d'onda ottica - Google Patents

Controllo dei rulli di trascinamento per produrre perturbazioni diametrali in una guida d'onda ottica

Info

Publication number
IT1100264B
IT1100264B IT29746/78A IT2974678A IT1100264B IT 1100264 B IT1100264 B IT 1100264B IT 29746/78 A IT29746/78 A IT 29746/78A IT 2974678 A IT2974678 A IT 2974678A IT 1100264 B IT1100264 B IT 1100264B
Authority
IT
Italy
Prior art keywords
disturbances
checking
wave guide
optical wave
driving rollers
Prior art date
Application number
IT29746/78A
Other languages
English (en)
Other versions
IT7829746A0 (it
Original Assignee
Corning Glass Works
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 Corning Glass Works filed Critical Corning Glass Works
Publication of IT7829746A0 publication Critical patent/IT7829746A0/it
Application granted granted Critical
Publication of IT1100264B publication Critical patent/IT1100264B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/03—Drawing means, e.g. drawing drums ; Traction or tensioning devices
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/02—External structure or shape details
    • C03B2203/06—Axial perturbations, e.g. twist, by torsion, undulating, crimped
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/10—Internal structure or shape details
    • C03B2203/18—Axial perturbations, e.g. in refractive index or composition

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Optical Integrated Circuits (AREA)
IT29746/78A 1977-11-21 1978-11-14 Controllo dei rulli di trascinamento per produrre perturbazioni diametrali in una guida d'onda ottica IT1100264B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/853,755 US4163370A (en) 1977-11-21 1977-11-21 Controlling the drawing rollers to produce diameter perturbations in an optical waveguide

Publications (2)

Publication Number Publication Date
IT7829746A0 IT7829746A0 (it) 1978-11-14
IT1100264B true IT1100264B (it) 1985-09-28

Family

ID=25316806

Family Applications (1)

Application Number Title Priority Date Filing Date
IT29746/78A IT1100264B (it) 1977-11-21 1978-11-14 Controllo dei rulli di trascinamento per produrre perturbazioni diametrali in una guida d'onda ottica

Country Status (7)

Country Link
US (1) US4163370A (it)
JP (1) JPS5479642A (it)
DE (1) DE2849608A1 (it)
FR (1) FR2409528A1 (it)
GB (1) GB2008569A (it)
IT (1) IT1100264B (it)
NL (1) NL7811431A (it)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3035070A1 (de) * 1980-09-17 1982-04-22 Siemens AG, 1000 Berlin und 8000 München Verfahren zum herstellen eines glasfaser-lichtwellenleiters mit verschiedenen durchmessern und verfahren zur herstellung eines verteilerelements oder mischers fuer optische kommunikationssysteme
FR2515632A1 (fr) * 1981-11-03 1983-05-06 Thomson Csf Procede d'obtention d'un objet a structure chiralique issu de l'etirage a partir d'une source de matiere ramollie, et dispositif mettant en oeuvre ce procede
US4925599A (en) * 1982-09-07 1990-05-15 Hughes Aircraft Company Optical fibers formed by rolling process
IT1208674B (it) * 1984-03-16 1989-07-10 Vitali Gianfranco Perfezionamento nei dispositivi per la omogeneizzazione e diffusione di fasci laser
US4601740A (en) * 1984-12-18 1986-07-22 At&T Technologies, Inc. Methods of and apparatus for at least partially closing an end portion of an optical preform tube
US4902327A (en) * 1988-04-27 1990-02-20 Raynet Corporation Monitoring fiber bend loss characteristics during manufacture
US5386845A (en) * 1990-10-10 1995-02-07 Montana Sulphur & Chemical Company Fluid transport apparatus with side recessed fitting well
JP2584151B2 (ja) * 1991-06-11 1997-02-19 株式会社フジクラ 光ファイバ
JP3557606B2 (ja) * 1995-03-01 2004-08-25 住友電気工業株式会社 光ファイバおよび光ファイバの製造方法
US6076376A (en) * 1995-03-01 2000-06-20 Sumitomo Electric Industries, Ltd. Method of making an optical fiber having an imparted twist
SE511083C2 (sv) * 1995-12-06 1999-08-02 Sumitomo Electric Industries Förfarande för att förlänga glasförform
DE69623938T2 (de) 1996-06-21 2003-05-22 Pirelli Cavi E Sistemi S.P.A., Mailand/Milano Gegen Wasserbäumchen widerstandsfähige Isolierungszusammensetzung
US6768825B2 (en) 1998-05-06 2004-07-27 Weatherford/Lamb, Inc. Optical sensor device having creep-resistant optical fiber attachments
US6317555B1 (en) * 1998-05-06 2001-11-13 Cidra Corporation Creep-resistant optical fiber attachment
US6507693B2 (en) 1998-05-06 2003-01-14 Cidra Corporation Optical filter device having creep-resistant optical fiber attachments
AU3790499A (en) * 1998-05-06 1999-11-23 Cidra Corporation Optical fiber bulge
NZ501485A (en) * 1998-12-23 2001-08-31 Pirelli Cavi E Sistemi Spa Winding different longitudinal portions of optical fibre onto reel at respectively different winding pitches
US6371394B1 (en) 1998-12-23 2002-04-16 Pirelli Cavi E Sistemi S.P.A. Method for winding a fibre element having different longitudinal portions
JP2001163632A (ja) * 1999-12-13 2001-06-19 Sumitomo Electric Ind Ltd 光ファイバ製造方法および光ファイバ製造装置
CN1300603C (zh) * 2001-05-09 2007-02-14 浜松光子学株式会社 光学透镜及半导体激光装置
US20070049732A1 (en) * 2005-09-01 2007-03-01 Zurlo Eugene J Ultra-high yield intravenous immune globulin preparation
SG191361A1 (en) * 2011-02-01 2013-07-31 Exxonmobil Chem Patents Inc Contoured tire innerliners and methods of making thereof
US8977093B2 (en) * 2013-06-14 2015-03-10 Sumitomo Electric Industries, Ltd. Multimode optical fiber
US11454580B2 (en) * 2014-10-14 2022-09-27 Heraeus Quartz North America Llc Method for preform or tube drawing based on its viscosity
US10294146B2 (en) 2016-08-31 2019-05-21 Corning Incorporated Single mode optical fibers with Brillouin frequency-shift management

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666976A (en) * 1950-06-10 1954-01-26 Allied Chem & Dye Corp Synthetic bristle and process for its production
NL78873C (it) * 1953-09-04
FR1529970A (fr) * 1966-06-10 1968-06-21 Landbouwwerktuigen & Maschf Procédé et installation pour la fabrication de fils de verre et fil de verre ainsifabriqué
US3819344A (en) * 1969-01-08 1974-06-25 Owens Corning Fiberglass Corp Method and apparatus producing perturbations while winding glass fibers
US3912478A (en) * 1974-06-17 1975-10-14 Bell Telephone Labor Inc Methods of introducing geometrical variations in optical fibers
US4028081A (en) * 1975-12-11 1977-06-07 Bell Telephone Laboratories, Incorporated Method for manufacturing helical optical fiber
US4038062A (en) * 1976-03-25 1977-07-26 Bell Telephone Laboratories, Incorporated Method and apparatus for introducing geometrical perturbations in optical fiber waveguides

Also Published As

Publication number Publication date
JPS5479642A (en) 1979-06-25
IT7829746A0 (it) 1978-11-14
NL7811431A (nl) 1979-05-23
FR2409528A1 (fr) 1979-06-15
US4163370A (en) 1979-08-07
DE2849608A1 (de) 1979-05-23
GB2008569A (en) 1979-06-06

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