GB1589115A - Coaxial optical fibre cable - Google Patents
Coaxial optical fibre cable Download PDFInfo
- Publication number
- GB1589115A GB1589115A GB29513/77A GB2951377A GB1589115A GB 1589115 A GB1589115 A GB 1589115A GB 29513/77 A GB29513/77 A GB 29513/77A GB 2951377 A GB2951377 A GB 2951377A GB 1589115 A GB1589115 A GB 1589115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- cable
- conductor
- central conductor
- coaxial cable
- 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
Links
- 239000013307 optical fiber Substances 0.000 title claims description 5
- 239000004020 conductor Substances 0.000 claims description 24
- 230000003287 optical effect Effects 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 238000009954 braiding Methods 0.000 claims description 2
- 230000001413 cellular effect Effects 0.000 claims description 2
- 239000003989 dielectric material Substances 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000005693 optoelectronics Effects 0.000 claims description 2
- 230000003071 parasitic effect Effects 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
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
- G02B6/4416—Heterogeneous cables
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
- C07F9/3804—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)] not used, see subgroups
- C07F9/3839—Polyphosphonic acids
- C07F9/3873—Polyphosphonic acids containing nitrogen substituent, e.g. N.....H or N-hydrocarbon group which can be substituted by halogen or nitro(so), N.....O, N.....S, N.....C(=X)- (X =O, S), N.....N, N...C(=X)...N (X =O, S)
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1891—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor comprising auxiliary conductors
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- General Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Communication Cables (AREA)
Description
(54) A COAXIAL OPTICAL FIBRE CABLE (71) We, THOMSON-CSF, a French Body
Corporate, of 173, Boulevard Haussmann75008 Paris-France, 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 an electric coaxial cable comprising a central conductor and a peripheral screen insulated from one another by a solid dielectric in which optical fibres are embedded.
According to the present invention, there is provided a coaxial cable comprising a central electric conductor a peripheral electrically conducting screen, a plurality of optical fibres distributed symmetrically and at equal intervals from one another around said central conductor and inside said screen and a solid dielectric filling the space between said central conductor, said fibres and said screen.
In the accompanying drawing, the Figure diagrammatically shows an electrically conducting coaxial cable which comprises according to the invention, a plurality of optical fibres embedded in the dielectric part.
The FIGURE shows a cross-sectional view of a coaxial cable in which the central electrical conductor 1 and the electrically conducting screen 2 are separated by a single solid dielectric 3, the whole being covered by an outer protective cladding 4.
Optical fibres 5 are embedded in the mass of the dielectric 3 and are symmetrically distributed at equal intervals around the central conductor 1 and inside the screen 2.
The dimensions of the cable are determined by the electric characteristics of the coaxial cable and are only slightly modified by the insertion of the optical fibre in the solid dielectric part 3.
The geometric distribution of the fibres 5 symmetrically around the central conductor 1 and at equal intervals from one another is of primary importance so as not to create any dissymetry in the distribution of the dielectric 3. In addition, the volume of the cable is greatly reduced.
The central conductor 1 may be made of solid copper for semiflexible cables and of several strands for flexible cables. The outer conductor or screen 2 is formed by one or more superposed braidings consisting of fine copper wires.
Dielectrics which are perfectly suitable for the cable according to the invention include polyethylene, polyethylene terephthalate and polystyrene used in compact or cellular form.
The outer cladding 4 is advantageously made of polyvinyl chloride.
The cable according to the invention represents a transition between existing transmissions by coaxial cables with standardized electronic equipment and the more recent optoelectronic transmissions for which it is sufficient to modify the terminal installations without altering the cables.
This type of cable may be used with advantage for optical or electrical transmissions, depending on whether or not the environment is affected by parasitic electromagnetic phenomena.
WHAT WE CLAIM IS:
1. A coaxial cable comprising a central electric conductor, a peripheral electrically conducting screen, a plurality of optical fibres distributed symmetrically and at equal intervals from one another around said central conductor inside said screen and a solid dielectric filling the space between said central conductor, said fibres and said screen.
2. A cable substantially as hereinbefore described with reference to the accompanying drawing.
3. A coaxial cable as claimed in claim 1 and substantially as shown in the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (3)
1. A coaxial cable comprising a central electric conductor, a peripheral electrically conducting screen, a plurality of optical fibres distributed symmetrically and at equal intervals from one another around said central conductor inside said screen and a solid dielectric filling the space between said central conductor, said fibres and said screen.
2. A cable substantially as hereinbefore described with reference to the accompanying drawing.
3. A coaxial cable as claimed in claim 1 and substantially as shown in the accompanying drawing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7621816A FR2358735A1 (en) | 1976-07-16 | 1976-07-16 | OPTICAL FIBER COAXIAL CABLE |
| US05/845,011 US4163733A (en) | 1977-10-25 | 1977-10-25 | Synergistic compositions for corrosion and scale control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1589115A true GB1589115A (en) | 1981-05-07 |
Family
ID=26219546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29513/77A Expired GB1589115A (en) | 1976-07-16 | 1977-07-13 | Coaxial optical fibre cable |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1589115A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136350A (en) * | 1983-02-24 | 1984-09-19 | American Telephone & Telegraph | Method for fabricating a cable core including optical fibers |
| GB2176905A (en) * | 1985-06-27 | 1987-01-07 | Stc Plc | Optical fibre cables |
| GB2360853A (en) * | 2000-03-30 | 2001-10-03 | Corning Cable Sys Llc | Micro composite fiber optic/electrical cable |
| WO2012080207A1 (en) | 2010-12-16 | 2012-06-21 | Thermo Electron Manufacturing Limited | Optical and electrical signal transmission cable and system |
-
1977
- 1977-07-13 GB GB29513/77A patent/GB1589115A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2136350A (en) * | 1983-02-24 | 1984-09-19 | American Telephone & Telegraph | Method for fabricating a cable core including optical fibers |
| GB2176905A (en) * | 1985-06-27 | 1987-01-07 | Stc Plc | Optical fibre cables |
| US4832441A (en) * | 1985-06-27 | 1989-05-23 | Stc Plc | Optical fiber cable |
| GB2176905B (en) * | 1985-06-27 | 1989-10-11 | Stc Plc | Optical fibre cables |
| GB2360853A (en) * | 2000-03-30 | 2001-10-03 | Corning Cable Sys Llc | Micro composite fiber optic/electrical cable |
| WO2012080207A1 (en) | 2010-12-16 | 2012-06-21 | Thermo Electron Manufacturing Limited | Optical and electrical signal transmission cable and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |