DE3865627D1 - Methode zur verminderung der daempfung von optischen fasern. - Google Patents

Methode zur verminderung der daempfung von optischen fasern.

Info

Publication number
DE3865627D1
DE3865627D1 DE8888118223T DE3865627T DE3865627D1 DE 3865627 D1 DE3865627 D1 DE 3865627D1 DE 8888118223 T DE8888118223 T DE 8888118223T DE 3865627 T DE3865627 T DE 3865627T DE 3865627 D1 DE3865627 D1 DE 3865627D1
Authority
DE
Germany
Prior art keywords
damping
reducing
optical fibers
fibers
optical
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE8888118223T
Other languages
English (en)
Inventor
Vita Pietro Di
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Optical Technologies Center Srl Turin/torino
Original Assignee
CSELT Centro Studi e Laboratori Telecomunicazioni SpA
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 CSELT Centro Studi e Laboratori Telecomunicazioni SpA filed Critical CSELT Centro Studi e Laboratori Telecomunicazioni SpA
Application granted granted Critical
Publication of DE3865627D1 publication Critical patent/DE3865627D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C03B37/10—Non-chemical treatment
    • C03B37/14—Re-forming fibres or filaments, i.e. changing their shape
    • 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
    • C03B37/10—Non-chemical treatment
    • C03B37/14—Re-forming fibres or filaments, i.e. changing their shape
    • C03B37/15—Re-forming fibres or filaments, i.e. changing their shape with heat application, e.g. for making optical fibres

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)
  • Glass Compositions (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
DE8888118223T 1987-11-05 1988-11-02 Methode zur verminderung der daempfung von optischen fasern. Expired - Lifetime DE3865627D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8767942A IT1211498B (it) 1987-11-05 1987-11-05 Procedimento per ridurre l attenuazione in fibre ottiche

Publications (1)

Publication Number Publication Date
DE3865627D1 true DE3865627D1 (de) 1991-11-21

Family

ID=11306567

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8888118223T Expired - Lifetime DE3865627D1 (de) 1987-11-05 1988-11-02 Methode zur verminderung der daempfung von optischen fasern.
DE198888118223T Pending DE315132T1 (de) 1987-11-05 1988-11-02 Methode zur verminderung der daempfung von optischen fasern.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE198888118223T Pending DE315132T1 (de) 1987-11-05 1988-11-02 Methode zur verminderung der daempfung von optischen fasern.

Country Status (6)

Country Link
US (2) US4925472A (de)
EP (1) EP0315132B1 (de)
JP (1) JP2631533B2 (de)
CA (1) CA1306854C (de)
DE (2) DE3865627D1 (de)
IT (1) IT1211498B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005730A1 (de) * 1990-02-23 1991-08-29 Kabelmetal Electro Gmbh Vorrichtung zur herstellung einer lichtwellenleiter-vorform
US5228893A (en) * 1991-11-27 1993-07-20 At&T Bell Laboratories Optical fiber tension monitoring technique
US6711309B1 (en) * 1999-01-28 2004-03-23 The University Of Sydney Noise suppression in lightwave communication systems
AU773667B2 (en) * 1999-05-27 2004-06-03 Sumitomo Electric Industries, Ltd. Production device and method for optical fiber
US20040057692A1 (en) * 2002-08-28 2004-03-25 Ball Laura J. Low loss optical fiber and method for making same
US7536877B2 (en) * 2003-04-04 2009-05-26 Fitel Ush Corp. Optical fiber fabrication and product
US20060130530A1 (en) * 2004-12-21 2006-06-22 Anderson James G Method of doping silica glass with an alkali metal, and optical fiber precursor formed therefrom
EP1952186A4 (de) * 2005-11-23 2010-08-04 Corning Inc Dämpfungsarme nicht-null-dispersionsverschobene optische faser
CN102081235A (zh) * 2010-12-08 2011-06-01 福州高意通讯有限公司 多模光纤中传输光信号均匀化、消偏振以及消相干的方法
CN102147236B (zh) * 2011-03-23 2012-09-26 南京大学 一种全分布式光纤应变及振动的传感方法与传感器
CN104007511A (zh) * 2014-05-30 2014-08-27 广东高聚激光有限公司 超声光纤光栅全光纤衰减器及光纤在线光功率衰减方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300288A (en) * 1963-03-01 1967-01-24 Pittsburgh Plate Glass Co Method for the production of glass fibers
US3912478A (en) * 1974-06-17 1975-10-14 Bell Telephone Labor Inc Methods of introducing geometrical variations in optical fibers
JPS568106A (en) * 1979-06-30 1981-01-27 Toshiba Corp Manufacture of optical waveguide
JPS57175739A (en) * 1981-04-17 1982-10-28 Nippon Telegr & Teleph Corp <Ntt> Preparation of rod lens
US4447124A (en) * 1981-10-27 1984-05-08 Bell Telephone Laboratories, Incorporated Multimode optical fiber with radially varying attenuation center density
DD205154A1 (de) * 1982-05-27 1983-12-21 Adw D Ddr Berlin Verfahren zur herstellung von lichtleitfasern
JPS59227747A (ja) * 1983-06-09 1984-12-21 Showa Electric Wire & Cable Co Ltd 光フアイバ製造方法
GB2149392A (en) * 1983-11-11 1985-06-12 Central Electr Generat Board Surface treatment of glass
JPS6110409A (ja) * 1984-06-26 1986-01-17 Toyota Motor Corp インモ−ルドコ−テイング成形方法
FR2568254B1 (fr) * 1984-07-25 1988-04-29 Centre Nat Rech Scient Application d'oligonucleotides lies a un agent intercalant, notamment a titre de medicament

Also Published As

Publication number Publication date
IT8767942A0 (it) 1987-11-05
EP0315132A2 (de) 1989-05-10
EP0315132A3 (en) 1990-02-07
DE315132T1 (de) 1990-05-03
US4925472A (en) 1990-05-15
IT1211498B (it) 1989-11-03
US4929264A (en) 1990-05-29
JP2631533B2 (ja) 1997-07-16
EP0315132B1 (de) 1991-10-16
JPH01142607A (ja) 1989-06-05
CA1306854C (en) 1992-09-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: OPTICAL TECHNOLOGIES CENTER S.R.L., TURIN/TORINO,

8339 Ceased/non-payment of the annual fee