SE459049B - FIBEROPTIC CABLE CONTAINING A LOT OF INPUTS WHICH WERE AN OPTICAL UNIT CONTAINED WHERE OPTICAL FIBERS ARE SURFACE OF WATER-ABSORBING METALLIC POWDER - Google Patents

FIBEROPTIC CABLE CONTAINING A LOT OF INPUTS WHICH WERE AN OPTICAL UNIT CONTAINED WHERE OPTICAL FIBERS ARE SURFACE OF WATER-ABSORBING METALLIC POWDER

Info

Publication number
SE459049B
SE459049B SE8502046A SE8502046A SE459049B SE 459049 B SE459049 B SE 459049B SE 8502046 A SE8502046 A SE 8502046A SE 8502046 A SE8502046 A SE 8502046A SE 459049 B SE459049 B SE 459049B
Authority
SE
Sweden
Prior art keywords
optical fibers
optical
lot
inputs
water
Prior art date
Application number
SE8502046A
Other languages
Swedish (sv)
Other versions
SE8502046D0 (en
SE8502046L (en
Inventor
P Anelli
M Santini
Original Assignee
Pirelli Cavi 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 Pirelli Cavi Spa filed Critical Pirelli Cavi Spa
Publication of SE8502046D0 publication Critical patent/SE8502046D0/en
Publication of SE8502046L publication Critical patent/SE8502046L/en
Publication of SE459049B publication Critical patent/SE459049B/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4427—Pressure resistant cables, e.g. undersea cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/44382—Means specially adapted for strengthening or protecting the cables the means comprising hydrogen absorbing materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather

Description

459 049 10 15 20 25 30 35 2 dessa olika hastigheter och utgör en funktion av tiden, dvs. ju större trycket och varaktigheten är ju större kommer risknívån att vara för fibrerna. 1 eiinännet at det nödvändigt ett i varje enskilt fall få en noggrann balans för vätets alstringshastighet (antingen det kommer inifrån eller utifrån kabeln), för dif- fusionshastigheten för vätet genom kabelhöljet och slut- ligen för eptidningeheetigneten.för vätet genom Omoivflifleen, så att man kan bestämma vilket partiella vätetryck som kommer att råda under en övergångsperiod och eventuellt under fertvetignetetiiietånd i närheten ev kebeine fibrer. 459 049 10 15 20 25 30 35 2 these different speeds and is a function of time, i.e. the greater the pressure and the duration the greater the level of risk will be for the fibers. 1 eiinännet that it necessary one in each individual cases get an accurate balance for the hydrogen generation rate (whether it comes from inside or outside the cable), for dif- the fusion rate of the hydrogen through the cable sheath and ligen för eptidningeheetigneten.för vätet genom Omoiv fl i, een, so that one can determine what partial hydrogen pressure is will prevail for a transitional period and possibly under fertvetignetetiiietånd in the vicinity ev kebeine fibers.

Med exempelvis en given funktionslivstid för en fiberoptisk kabel och med förutsebaratemperatur- och tryckförhållanden så är vätets diffusionshastighet genom metaller så liten att metallhöljena med normal tjocklek kan anses vara prak- tiskt taget ogenomträngliga för väte.With, for example, a given operating life for a fiber optic cable and with predictable temperature and pressure conditions then the rate of diffusion of hydrogen through metals is so small that the metal casings of normal thickness can be considered practically impermeable to hydrogen.

Speciellt sådana kablar som har metallhöljen, och i synnerhet om de även har ett litet inre utrymme, är de som på kort tid och med höga nivåer uppvisar ökad mättning på grund av väte som frigörs av element innanför och utanför höljet.In particular such cables as metal casings, and in especially if they also have a small interior space, they are like in a short time and with high levels shows increased saturation due to hydrogen released by elements inside and outside the casing.

Redogörelse för uppfinningen Ändamålet med den föreliggande uppfinningen är att förverkliga en fiberoptisk kabel som har skydd mot absorption av gasformigt väte i de delar av kabeln där de optiska fibrerna är belägna. Detta uppnås med de medel som anges i den kännetecknande delen av det efterföljande patentkravet 1.Disclosure of the invention The object of the present invention is to realize a fiber optic cable that has protection against absorption of gaseous hydrogen in the parts of the cable where the optical the fibers are located. This is achieved by the means set out in the characterizing part of the appended claim 1.

Den fiberoptiska kabeln enligt uppfinningen omfattar sålunda ett hölje innanför vilket inrymmes minst en optisk enhet som omfattar eneller flera optiska fibrer. Det innan- för höljet befintliga metalliska materialskiktet kan omfatta en eller flera metaller ur grupp III, IV, V och VIII av det periodiska systemet, som då är anordnade som skydd mot absorp- tion av gasformigt väte i kabelns delar som inrymmer de op- tiska fibrerna.The fiber optic cable according to the invention comprises thus a casing inside which houses at least one optical device comprising one or more optical fibers. The internal existing metallic material layer for the housing may comprise one or more Group III, IV, V and VIII metals thereof periodic table, which are then arranged as protection against absorption gaseous hydrogen in the parts of the cable which contain the the fibers.

Claims (3)

459 049 Ä PATENTKRÅV459 049 Ä PATENTKRÅV 1. Fiberoptisk kabel omfattande ett hölje (16) innanför vilket en optisk enhet (2) är anordnad med en eller flera optiska fibrer (10) och ett skikt (21) av metallískt material, k ä n n e t e c k n a d av att det metalliska material- 5 skiktet (21) omfattar väteabsorberande metalliskt pulver som omger den optiska fibern eller de optiska fibrerna (10), var- vid pulvret bildas av någon eller några av metallerna lantan, titan och hafnium eller en legering av dessa eller minst en av dem tillsammans med zirkonium eller intermetalliska för- titan, zirko- 10 eningar eller blandningar av lantan, hafnium, nium, vanadin, niob och palladium.Fiber optic cable comprising a housing (16) inside which an optical unit (2) is provided with one or more optical fibers (10) and a layer (21) of metallic material, characterized in that the metallic material layer (21) comprises hydrogen absorbing metallic powder surrounding the optical fiber or optical fibers (10), the powder being formed by any of the metals lanthanum, titanium and hafnium or an alloy thereof or at least one of them together with zirconium or intermetallic titanium, zirconia or mixtures of lanthanum, hafnium, nium, vanadium, niobium and palladium. 2. Kabel enligt patentkrav 1, k ä n n e t e c k n a d av att pulvret (21) ingår i en fyllning innanförhöljet (16).Cable according to claim 1, characterized in that the powder (21) is included in a filling inside the casing (16). 3. Kabel enligt patentkrav 1 eller 2, k ä n n e t e c k- 15 n a d av att pulvret (21) har en partikelstorlek av 10 - 100 U. \&3. A cable according to claim 1 or 2, characterized in that the powder (21) has a particle size of 10 - 100 U.
SE8502046A 1984-04-27 1985-04-26 FIBEROPTIC CABLE CONTAINING A LOT OF INPUTS WHICH WERE AN OPTICAL UNIT CONTAINED WHERE OPTICAL FIBERS ARE SURFACE OF WATER-ABSORBING METALLIC POWDER SE459049B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT20699/84A IT1176134B (en) 1984-04-27 1984-04-27 OPTICAL FIBER CABLE EQUIPPED WITH PROTECTION AGAINST THE ABSORPTION OF GASEOUS HYDROGEN BY OPTICAL FIBERS

Publications (3)

Publication Number Publication Date
SE8502046D0 SE8502046D0 (en) 1985-04-26
SE8502046L SE8502046L (en) 1985-10-28
SE459049B true SE459049B (en) 1989-05-29

Family

ID=11170739

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8502046A SE459049B (en) 1984-04-27 1985-04-26 FIBEROPTIC CABLE CONTAINING A LOT OF INPUTS WHICH WERE AN OPTICAL UNIT CONTAINED WHERE OPTICAL FIBERS ARE SURFACE OF WATER-ABSORBING METALLIC POWDER

Country Status (15)

Country Link
JP (1) JPS60239702A (en)
AU (1) AU575123B2 (en)
BR (1) BR8501644A (en)
CA (1) CA1251076A (en)
DE (1) DE3515227A1 (en)
ES (1) ES8608182A1 (en)
FR (1) FR2563635B1 (en)
GB (1) GB2158264B (en)
GR (1) GR851014B (en)
IT (1) IT1176134B (en)
MX (1) MX158233A (en)
NL (1) NL8501206A (en)
NO (1) NO168208C (en)
NZ (1) NZ211335A (en)
SE (1) SE459049B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8506497D0 (en) * 1985-03-13 1985-04-17 Telephone Cables Ltd Cables
IT1185667B (en) * 1985-08-30 1987-11-12 Pirelli Cavi Spa FIBER OPTIC TELECOMMUNICATION CABLE
IT1186003B (en) * 1985-10-08 1987-11-18 Pirelli Cavi Spa ABSORBENT HYDROGEN MIXTURE AND HYDROGEN ABSORBENT MIXTURE FOR FIBER OPTIC CABLE
GB8911959D0 (en) * 1988-05-28 1989-07-12 Ici Plc Coated optical fibres
JPH03200108A (en) * 1989-12-27 1991-09-02 Tatsuta Electric Wire & Cable Co Ltd Electrically conductive optical fiber
DE4108032A1 (en) 1991-03-13 1992-09-17 Bayer Ag PALLADIUM-CONTAINING POLYMER COMPOSITION AND METHOD FOR THE PRODUCTION THEREOF
US5214734A (en) * 1992-03-24 1993-05-25 At&T Bell Laboratories Optical fiber with improved moisture resistance
DE4338761A1 (en) * 1993-11-12 1995-05-18 Siemens Ag Non-floating optical submarine cable
FR2774183B1 (en) * 1998-01-26 2002-04-26 Alsthom Cge Alkatel SUBSTANTIALLY WATERPROOF TUBE CABLE HAVING AT LEAST ONE OPTICAL CONDUCTOR AND A HYDROGEN-ABSORBING PRODUCT
US6028974A (en) * 1998-08-10 2000-02-22 Alcatel Seal for underwater cable joint
DE10201719A1 (en) * 2002-01-18 2003-07-31 Ccs Technology Inc Optical fiber cable for installation of the same in a gas line
GB2424962B (en) 2005-04-05 2007-10-17 Sensor Highway Ltd Aparatus and method for preventing unwanted exposure of a device to an undesirable substance
CN107747164B (en) * 2017-10-10 2020-07-03 常熟万龙机械有限公司 Ultrathin non-woven fabric for cable and optical cable expansion water-blocking tape and production method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1079512A (en) * 1978-11-16 1980-06-17 Basil V.E. Walton Powdered telephone cable filling compound
FR2460492A1 (en) * 1979-06-28 1981-01-23 Cables De Lyon Geoffroy Delore FIBER OPTIC UNDERWATER CABLE
US4407561A (en) * 1980-10-14 1983-10-04 Hughes Aircraft Company Metallic clad fiber optical waveguide
US4418984A (en) * 1980-11-03 1983-12-06 Hughes Aircraft Company Multiply coated metallic clad fiber optical waveguide
GB2125180A (en) * 1982-08-10 1984-02-29 Standard Telephones Cables Ltd Optical fibre manufacture
GB2129338B (en) * 1982-10-22 1985-10-16 Standard Telephones Cables Ltd Telecommunications cable manufacture
GB8321229D0 (en) * 1983-08-05 1983-09-07 Bicc Plc Optical cables
JPS6042720A (en) * 1983-08-18 1985-03-07 Kokusai Denshin Denwa Co Ltd <Kdd> Optical fiber cable
JPS6082156A (en) * 1983-10-13 1985-05-10 ドル−オリバ−　インコ−ポレイテツド Hydrocyclone

Also Published As

Publication number Publication date
GB2158264A (en) 1985-11-06
BR8501644A (en) 1985-12-03
GB2158264B (en) 1988-02-17
AU3927385A (en) 1985-10-31
IT1176134B (en) 1987-08-12
AU575123B2 (en) 1988-07-21
NO168208B (en) 1991-10-14
NO168208C (en) 1992-01-22
IT8420699A0 (en) 1984-04-27
ES543174A0 (en) 1986-06-01
CA1251076A (en) 1989-03-14
FR2563635A1 (en) 1985-10-31
IT8420699A1 (en) 1985-10-27
NL8501206A (en) 1985-11-18
NZ211335A (en) 1989-01-27
NO851685L (en) 1985-10-28
MX158233A (en) 1988-10-31
JPS60239702A (en) 1985-11-28
DE3515227A1 (en) 1985-10-31
ES8608182A1 (en) 1986-06-01
SE8502046D0 (en) 1985-04-26
SE8502046L (en) 1985-10-28
GR851014B (en) 1985-11-25
GB8510657D0 (en) 1985-06-05
FR2563635B1 (en) 1989-06-02

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