GB1572299A – Optical connector cable
– Google Patents
GB1572299A – Optical connector cable
– Google Patents
Optical connector cable
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Publication number
GB1572299A
GB1572299A
GB5177277A
GB5177277A
GB1572299A
GB 1572299 A
GB1572299 A
GB 1572299A
GB 5177277 A
GB5177277 A
GB 5177277A
GB 5177277 A
GB5177277 A
GB 5177277A
GB 1572299 A
GB1572299 A
GB 1572299A
Authority
GB
United Kingdom
Prior art keywords
cable
optical fibre
strength member
fibres
optical
Prior art date
1977-12-13
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
Application number
GB5177277A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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.)
1977-12-13
Filing date
1977-12-13
Publication date
1980-07-30
1977-12-13
Application filed by Standard Telephone and Cables PLC
filed
Critical
Standard Telephone and Cables PLC
1977-12-13
Priority to GB5177277A
priority
Critical
patent/GB1572299A/en
1980-07-30
Publication of GB1572299A
publication
Critical
patent/GB1572299A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
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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
G02B6/4415—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
G02B6/441—Optical cables built up from sub-bundles
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
G02B6/4416—Heterogeneous cables
Description
(54) OPTICAL CONNECTOR CABLE
(71) We, STANDARD TELEPHONES
AND CABLES LIMITED, a British Company of 190 Strand, London W.C.2., England do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to optical fibre cables, and especially to such cables for submarine use.
Where optical fibre cables are used for relatively long distances, repeaters have to be provided at intervals determined by the attenuation of the optical fibres. These repeaters are powered electrically with the power supplied from the terminal via metallic conductors. In designing a cable to meet these requirements it is essential that the cable when intended for underseas use should have good flexibility and should be resistant to high pressures and to the action of the sea.
An object of the invention is to provide an optical fibre cable in which the above requirements are met economically.
According to the invention we provide an optical fibre cable which includes a central strength member surrounded by a tubular electrical conductor on the outer surface of which there is located a plurality of optical fibres, the whole being enclosed in a cylindrical dielectric sheath, and in which the strength member is a stranded construction.
An embodiment of the invention will now be described with reference to the accompanying drawing, which is a crosssection of an optical fibre cable embodying the invention.
In the cable shown there is a substantially cylindrical strength member 1 on the cable neutral axis, the strength member being formed by steel strands plaited or dieformed together. This is surrounded by a tubular conductor 2 formed of copper tape on the outside of which are located optical fibres 6 spaced by filamentary fillers as indicated at 3. As shown there are four optical fibres 6 equi-spaced around the tubular conductor, although other numbers of an arrangements of fibres could be used. Thus it will be seen that the optical fibres are spaced from each other by filamentary fillers in the cable shown. The above elements are within a cylindrical sheath 4 of a dielectric material. This latter may, e.g. in the case of a submarine cable be within a further sheath 5 which can be armoured if necessary.
In the cable shown the strength member is made from high tensile steel and has an outer diameter of 8.75 mm. The tubular conductor has an outside diameter of 9.78 mm. and is made from copper tape 0.51 mm thick and 30.7 mm wide. The dielectric is polyethylene with an outside diameter of 24.75 mm.
WHAT WE CLAIM IS:
1. An optical fibre cable which includes a central strength member surrounded by a tubudar electrical conductor on the outer surface of which there is located a plurality of optical fibres, the whole being enclosed in a cylindrical dielectric sheath, and in which the strength member is of stranded construction.
2. An optical fibre cable as claimed in claim 1, and in which the strength member is made from steel strands.
3. An optical fibre cable as claimed in claim 1 or 2, and in which the tubular con
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (7)
**WARNING** start of CLMS field may overlap end of DESC **. (54) OPTICAL CONNECTOR CABLE (71) We, STANDARD TELEPHONES AND CABLES LIMITED, a British Company of 190 Strand, London W.C.2., England do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to optical fibre cables, and especially to such cables for submarine use. Where optical fibre cables are used for relatively long distances, repeaters have to be provided at intervals determined by the attenuation of the optical fibres. These repeaters are powered electrically with the power supplied from the terminal via metallic conductors. In designing a cable to meet these requirements it is essential that the cable when intended for underseas use should have good flexibility and should be resistant to high pressures and to the action of the sea. An object of the invention is to provide an optical fibre cable in which the above requirements are met economically. According to the invention we provide an optical fibre cable which includes a central strength member surrounded by a tubular electrical conductor on the outer surface of which there is located a plurality of optical fibres, the whole being enclosed in a cylindrical dielectric sheath, and in which the strength member is a stranded construction. An embodiment of the invention will now be described with reference to the accompanying drawing, which is a crosssection of an optical fibre cable embodying the invention. In the cable shown there is a substantially cylindrical strength member 1 on the cable neutral axis, the strength member being formed by steel strands plaited or dieformed together. This is surrounded by a tubular conductor 2 formed of copper tape on the outside of which are located optical fibres 6 spaced by filamentary fillers as indicated at 3. As shown there are four optical fibres 6 equi-spaced around the tubular conductor, although other numbers of an arrangements of fibres could be used. Thus it will be seen that the optical fibres are spaced from each other by filamentary fillers in the cable shown. The above elements are within a cylindrical sheath 4 of a dielectric material. This latter may, e.g. in the case of a submarine cable be within a further sheath 5 which can be armoured if necessary. In the cable shown the strength member is made from high tensile steel and has an outer diameter of 8.75 mm. The tubular conductor has an outside diameter of 9.78 mm. and is made from copper tape 0.51 mm thick and 30.7 mm wide. The dielectric is polyethylene with an outside diameter of 24.75 mm. WHAT WE CLAIM IS:
1. An optical fibre cable which includes a central strength member surrounded by a tubudar electrical conductor on the outer surface of which there is located a plurality of optical fibres, the whole being enclosed in a cylindrical dielectric sheath, and in which the strength member is of stranded construction.
2. An optical fibre cable as claimed in claim 1, and in which the strength member is made from steel strands.
3. An optical fibre cable as claimed in claim 1 or 2, and in which the tubular con ductor is of copper tape.
4. An optical fibre cable as claimed in claim 1, 2 or 3 and in which the fibres are spaced from each other by filamentary fillers.
5. An optical fibre cable which includes a stranded central strength member formed from a number of steel strands, a tubular electrical conductor surrounding and over
laying the stranded strength member a plurality of optical fibres located on the outer
surface of the tubular conductor, which
fibres are spaced from each other by filamentary fillers, and a sheath of a dielectric material overlaying the fibres and the fillers.
6. An optical fibre cable as claimed in claim 5, and which includes an outer armoured sheath overlaying the dielectric sheath
7. An optical fibre cable substantially as
described with reference to the accompany
ing drawing.
GB5177277A
1977-12-13
1977-12-13
Optical connector cable
Expired
GB1572299A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB5177277A
GB1572299A
(en)
1977-12-13
1977-12-13
Optical connector cable
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB5177277A
GB1572299A
(en)
1977-12-13
1977-12-13
Optical connector cable
Publications (1)
Publication Number
Publication Date
GB1572299A
true
GB1572299A
(en)
1980-07-30
Family
ID=10461321
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB5177277A
Expired
GB1572299A
(en)
1977-12-13
1977-12-13
Optical connector cable
Country Status (1)
Country
Link
GB
(1)
GB1572299A
(en)
Cited By (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2469724A1
(en)
*
1979-11-15
1981-05-22
Int Standard Electric Corp
OPTICAL FIBER SUBMARINE CABLE
GB2164171A
(en)
*
1984-09-06
1986-03-12
Bicc Plc
Overhead electric conductor wrapped in optical fibre ribbon
FR2584200A1
(en)
*
1986-06-27
1987-01-02
Int Standard Electric Corp
Fibre-optic cable and its manufacturing process
US4676590A
(en)
*
1984-04-19
1987-06-30
Societa’ Cavi Pirelli S.P.A.
Pressure resistant submarine optical fiber cable
US4697875A
(en)
*
1985-05-29
1987-10-06
Societa Cavi Pirelli S.P.A.
Pressure resistant submarine optical fiber cable
US4722589A
(en)
*
1985-02-26
1988-02-02
Societa’ Cavi Pirelli S.P.A.
Pressure resistant optical fiber cable
EP0285917A1
(en)
*
1987-03-31
1988-10-12
PIRELLI CAVI S.p.A.
Cable for conveying electric power and for transmitting optical signals
1977
1977-12-13
GB
GB5177277A
patent/GB1572299A/en
not_active
Expired
Cited By (7)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2469724A1
(en)
*
1979-11-15
1981-05-22
Int Standard Electric Corp
OPTICAL FIBER SUBMARINE CABLE
US4676590A
(en)
*
1984-04-19
1987-06-30
Societa’ Cavi Pirelli S.P.A.
Pressure resistant submarine optical fiber cable
GB2164171A
(en)
*
1984-09-06
1986-03-12
Bicc Plc
Overhead electric conductor wrapped in optical fibre ribbon
US4722589A
(en)
*
1985-02-26
1988-02-02
Societa’ Cavi Pirelli S.P.A.
Pressure resistant optical fiber cable
US4697875A
(en)
*
1985-05-29
1987-10-06
Societa Cavi Pirelli S.P.A.
Pressure resistant submarine optical fiber cable
FR2584200A1
(en)
*
1986-06-27
1987-01-02
Int Standard Electric Corp
Fibre-optic cable and its manufacturing process
EP0285917A1
(en)
*
1987-03-31
1988-10-12
PIRELLI CAVI S.p.A.
Cable for conveying electric power and for transmitting optical signals
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Legal Events
Date
Code
Title
Description
1980-10-15
PS
Patent sealed
1982-01-06
746
Register noted ‘licences of right’ (sect. 46/1977)
1990-08-08
PCNP
Patent ceased through non-payment of renewal fee
