WO2006010359A1 - Optical cable and method for the production thereof - Google Patents
Optical cable and method for the production thereof Download PDFInfo
- Publication number
- WO2006010359A1 WO2006010359A1 PCT/DE2005/001282 DE2005001282W WO2006010359A1 WO 2006010359 A1 WO2006010359 A1 WO 2006010359A1 DE 2005001282 W DE2005001282 W DE 2005001282W WO 2006010359 A1 WO2006010359 A1 WO 2006010359A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- cable
- optical transmission
- matrix material
- transmission elements
- Prior art date
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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
-
- 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
Definitions
- the invention relates to an optical cable with optical transmission elements, which have a wire sheath with low tear elongation.
- the invention also relates to a method for producing the optical cable, which enables heating of optical transmission elements to temperatures of more than 85 ° C.
- An optical cable comprises a plurality of optical transmission elements, which are also referred to as wires or "units".
- the optical cable further comprises a cable core and a Ka ⁇ belmantel surrounding the cable core.
- the plurality of optical transmission elements are angeord ⁇ net within the cable core.
- the cable sheath of the optical cable serves both the protection and the relief of the optical effetsele ⁇ elements.
- a suitable material for the cable sheath has a high melting point.
- Known materials for a cable sheath contain, for example, polyamide (PA), polyethylene (PE) or polyvinyl chloride (PVC).
- An optical cable may comprise a number of 12 optical transmission elements.
- the optical transmission elements can be characterized by a number of 12 distinguishable colors. On the basis of the colors with which the optical transmission elements are characterized, the ends of the optical transmission elements exposed at both ends of a cable section can be unambiguously assigned to one another.
- An optical transmission element comprises a number of optical waveguides and a wire sheath which surrounds the number of optical waveguides.
- the wire sheath of an optical transmission element allows a division of the optical waveguides contained in an optical cable into different groups.
- the core sheath should be removable without special tools. A suitable material for the core sheath should therefore be soft.
- an optical transmission element may comprise a number of 12 optical fibers.
- the optical waveguides can be characterized by a number of 12 distinguishable colors. On the basis of the colors with which the optical waveguides are marked, the ends of the optical waveguides exposed at the two ends of a section of a loose tube can be unambiguously assigned to one another.
- An optical waveguide comprises a fiber coating (coating) and a glass fiber which is surrounded by the fiber coating.
- the optical waveguide is characterized by the color of the fiber coating.
- a number of 144 optical fibers contained in an optical cable may be divided into a number of 12 groups each of a number of 12 optical fibers.
- the core sheath of an optical transmission element can be characterized by one of the 12 colors and the fiber coating of each optical waveguide in the optical transmission element by ei ⁇ ne further 12 colors.
- the two ends of one of the 144 optical fibers included in the optical cable can be assigned to each other based on the color of the fiber coating of the optical fiber and the color of the wire sheath of the optical transmission element to which the optical fiber belongs.
- the optical transmission elements are arranged in the cable jacket in such a way that in a section of the optical cable which has a certain length, sections of optical transmission elements which have a somewhat greater length run. This excess length of the optical transmission elements within the optical cable ensures that no excessive tensile stresses occur in the optical transmission elements when bending or stretching the optical cable.
- the optical transmission elements may be stranded in the form of a helix about a central element running along the longitudinal axis of the cable.
- the central element has a rigidity which prevents tensile and compressive loads in the longitudinal direction of the optical cable.
- the known materials for soft buffer tubes have the disadvantage that their melting point or Erweichungs ⁇ point is less than 85 0 C. Already temperatures of about 85 0 C therefore have a softening or melting of Ader ⁇ cases the optical transmission elements result.
- the wire sheaths of two adjacent to each other arranged optical transmission elements of the optical Ka ⁇ lever merge or glue together. Fer ⁇ ner can glue the wire hull of an optical transmission element with the cable sheath of the optical cable or with a surrounded by the wire hull fiber optic cable. Adhesion of the conductor sheaths of two adjacent optical transmission elements to one another or bonding of the conductor sheath of an optical transmission element to the cable sheath has a disadvantageous effect on the assembly and connection technology of the optical cable.
- Adhesion of the core sheath of an optical transmission element with an optical waveguide has a disadvantageous effect on the optical transmission properties.
- a macrobending of the optical waveguide can occur on a gluing element when the optical transmission element is bent or stretched. Between two adhesion points, a pressure load caused by the bending can lead to microbending of the light waveguide. Both macrobending and microbending enhance the light emission from the glass fiber and thus the attenuation of optical signals. Furthermore, the separation of an optical waveguide glued to the core sheath is made more difficult.
- the temperature at which the optical transmission element can be used is limited to temperatures below 85 ° C.
- the temperature at which the optical transmission element can be further processed to form an optical cable is limited to temperatures below 85 ° C.
- An optical cable is produced by first forming optical transmission elements and then processing the optical transmission elements to form an optical cable.
- one of the optical transmission elements is formed by supplying the optical waveguides to an extruder head, in which an electrode sheath is extruded around the optical waveguides.
- the optical transmission elements are further processed into an optical cable by forming a cable sheath around the optical transmission elements.
- the cable sheath is formed by, in particular, the optical transmission elements being fed to an extruder head in which a protective sleeve which is resistant to transverse pressure is extruded around the optical transmission elements.
- the Ader ⁇ case one of the optical transmission elements a dependent Mate ⁇ rial and the withdrawal speed of the protective sheath temperature of about 85 0 C to achieve what sticking the wire sheath with an optical waveguide of the optical transmission element, with the wire sheath of an adjacent optical transmission element or with the cable sheath of the optical cable.
- buffer tube of optical transmission elements are, for example, polybutylene terephthalate (PBT), polycarbonates (PC), mixtures of polybutylene terephthalates and polycarbonates, but also polypropylenes.
- PBT polybutylene terephthalate
- PC polycarbonates
- mixtures of polybutylene terephthalates and polycarbonates but also polypropylenes.
- an object of the invention to provide an opti ⁇ cal cable whose optical transmission elements have a wire sheath whose elongation at break is so low that the core sheath can be removed without special tools to expose the optical waveguide, and their melting point is so high that the core does not soften at temperatures of up to 85 0 C.
- optical cable having the features of claim 1.
- the optical cable according to the invention comprises a cable sheath with at least two optical transmission elements, which are arranged in ⁇ within the cable sheath. Of the at least two optical transmission elements, one comprises at least one optical waveguide and one core cladding which surrounds at least one optical waveguide.
- the core sleeve a matrix material and embedded in the matrix material filler, the melting point of the matrix material contains is more than 85 0 C and the mass fraction of the filler in the total mass of the core sleeve is at least 30%.
- the wire sheath of the optical transmission element thus comprises a matrix material and a filler.
- the melting point of the buffer tube is determined by the melting point of the matrix material.
- the mass fraction of the filler in the total mass of matrix material and filler is at least 30%, the elongation at break or the tensile strength of the buffer tube is reduced in such a way that it can be removed without special tools. This greatly simplifies the handling of an optical cable with optical transmission elements having such a wire sheath.
- the matrix material of the core sleeve an opti ⁇ rule transmission element is a thermoplastic polymer having a melting point of at least 110 0 C and the rixmaterial embedded in the Mat ⁇ filler is a mineral.
- the optical transmission element for producing an optical cable can also process steps are employed, the temperatures of the heating core sleeve Tempera ⁇ of more 85 0 C effect during further processing.
- the choice of a mineral filler ensures that the filler can withstand temperatures in excess of 85 ° C.
- suitable active fillers cause a Flamin ⁇ adversity of the core sheath by dehydration or prevent water absorption by a propagation of water in the longitudinal direction of the opti ⁇ 's cable.
- the mass fraction of the filler on the wire sheath of an optical transmission element is between 60% and 70%.
- the required reduction in the elongation at break of the buffer tube can be achieved by increasing the mass fraction of the filler to the total mass of filler and matrix material ,
- the matrix material of the buffer tube of an optical transmission element contains a polyolefin.
- the matrix material of the buffer tube of an optical transmission element can also contain polyethylene, for example "low density polyethylene” (LDPE), “medium density polyethylene” (MDPE) or “high density polyethylene” (HDPE).
- LDPE low density polyethylene
- MDPE medium density polyethylene
- HDPE high density polyethylene
- the matrix material of the buffer tube of an optical transmission element may contain polypropylene.
- the matrix material of the buffer tube of an optical transmission element contains an elastomer or a copolymer of an elastomer.
- the filler of the buffer tube of an optical transmission element may contain chalk.
- chalk reduced which is embedded as a filler in a matrix material having a melting point of more than 85 0 C ein ⁇ , only the elongation at break of the buffer tube.
- Krei ⁇ de is a passive filler.
- the filler of the buffer tube of an optical transmission element contains magnesium hydroxide or aluminum hydroxide.
- a metal hydroxide which is introduced as a filler in a matrix material having a melting point of more than 85 0 C, causes a flame retardancy of the buffer tube.
- Metal hydroxides are active fillers. The flame retardance of matrix materials filled with metal hydroxides is due to the fact that metal hydroxides split off water upon oxidation.
- SAP super absorbent polymer.
- the swellable powder may contain a polyacrylic acid or a salt of a polyacrylic acid such as, for example, sodium polyacrylate.
- the cable sheath of the optical cable preferably comprises polyethylene or polypropylene or polyamide.
- an optical cable In the further processing of the optical transmission elements for producing an optical cable, whose sheath contains one of these materials, the core sleeve of a transmission element opti ⁇ rule generally occur Pro ⁇ zess Marine on, during which a temperature of about 85 0 C was reached. Therefore, an optical cable should be such Cable sheath contain optical transmission elements with a wire sheath that can withstand these temperatures.
- the object is achieved by the method for producing an optical cable having the features of claim 9.
- the inventive method for producing an opti ⁇ rule cable includes a step of generating at least two optical transmitting members and a an anatomy ⁇ the step of generating a cable jacket optical around the mindes ⁇ least two transmission elements, the heating of the core sleeve to a temperature of at least 85 0 C includes.
- the production of at least one of the two optical transmission elements is effected by a step of providing at least one optical waveguide, an on ⁇ closing step of providing a mixture comprising a matrix polymer having a melting point of more than 85 0 C and a filler, wherein the mass fraction of the filler on the total mass of the filler and of the matrix polymer is at least 30%, and a subsequent step of forming a buffer tube around the at least one optical waveguide by extruding the buffer tube from the mixture of the filler and the matrix polymer.
- the inventive method for producing an optical cable, optical transmission elements with a ner wire sheath, which has a high melting point and a low elongation at break, generates. Therefore, in the WeLterver- processing of the optical transmission elements to produce the optical cable, also with a heating of the core sleeve to temperatures above 85 0 C, no sticking of the opti ⁇ rule transfer member to a further optical Ü bertragungselement, with the cable sheath or to a light ⁇ waveguide enter.
- the step of providing the matrix material comprises a step of providing a thermoplastic polymer and the step of providing a filler comprises a step of providing a mineral.
- the step of producing the cable sheath preferably comprises a step of extruding polyethylene or polypropylene or polyamide.
- the figure shows an optical cable according to an embodiment of the present invention.
- the optical cable 1 shown in the figure comprises a jacket 11 and a plurality of optical transmission elements 101 and 102.
- the cable jacket 11 may contain polyethylene (PE) or polypropylene (PP) or polyamide (PA).
- the optical transmission elements 101 and 102 are arranged inside the cable jacket 11.
- the optical cable 1 has a round cross section. In a section of the optical cable 1, which has a certain length, sections of the opti ⁇ transmission elements 101 and 102 are arranged, which have a slightly greater length. As a result of this excess length of the optical transmission elements 101 and 102 in the section of the optical cable 1, bending or stretching of the optical cable see cables 1 no excessive mechanical stresses in the optical transmission elements 101 and 102 occur.
- the excess length of the optical transmission elements 101 and 102 can be generated by shrinking the cable sheath 11 or by roping onto a central element, for example a source yarn 12.
- the optical cable 1 may contain a number of 12 optical transmission elements, for example the optical transmission elements 101 and 102.
- the number of 12 optical transmission elements can be characterized by a corresponding number of different colors.
- the buffer tube 1011 of the transfer element 101 may have one of the 12 distinguishable colors.
- the optical transmission element 101 comprises a wire sheath 1011 and a plurality of optical waveguides 10101 and 10102.
- the core sheath contains a matrix polymer and a filler which is embedded in the matrix polymer.
- the matrix polymer has a melting or softening point greater than 85 ° C.
- the buffer tube preferably contains a thermoplastic polyvinyl lymer having a melting point of at least 110 0 C, i.e. 110 0 C or more than 110 0 C.
- the buffer tube may be a polyolefin fin, in particular polyethylene (PE) or Polpropylen (PP) containing ,
- the matrix polymer may contain "Low Density Polyethylene” (LDPE) or “Medium Density Polyethylene” (MDPE) or "High Density Polyethylene” (HDPE).
- the buffer tube may also contain an elastomer or a copolymer of an elastomer.
- the filler which is embedded in the matrix polymer, reduces the elongation at break and tensile strength of the buffer tube.
- the mass fraction of the filler in the total mass of the buffer tube is at least 30%, ie 30% or more than 30%. Preferably the mass fraction of the filler at the core covering 60% to 70%.
- the filler preferably contains a mineral.
- the filler may contain chalk.
- the filler may also contain a metal hydroxide, for example magnesium hydroxide or aluminum hydroxide, or a swellable material, for example a polyacrylic acid or a salt of a polyacrylic acid, such as sodium polyacrylate.
- the optical fibers 10101 and 10102 are disposed inside the outer shell 1011.
- the illustrated optical transmission element 101 has a round cross-section.
- sections of the optical waveguides 10101 and 10102 are arranged which have a somewhat greater length.
- the light waveguides 10101 and 10102 can be arranged in the form of a helix about the longitudinal axis of the section.
- the optical transmission element 101 may include a number of 12 optical fibers, for example the optical fibers 10101 and 10102.
- the number of 12 Lichtwellenlei ⁇ ter can be characterized by a corresponding number of distinguishable colors.
- the optical waveguide can comprise a glass fiber and a fiber coating (coating), which surrounds the glass fiber.
- the fiber coating of the optical waveguide can have one of the 12 different colors.
- optical waveguides 10101 and 10102 in the longitudinal direction of the optical transmission element 101 relative to each other and relative to the buffer tube 1011 are easily displaced. Furthermore, it is necessary that the optical transmission elements 101 and 102 relative to the longitudinal direction of the cable 1 relative to each other and relative to the cable sheath 11 are displaceable.
- the wire sheath 1011 of the optical transmission element 101 has both a high melting or softening point and a low elongation at break.
- bonding of the core sheath 1011 to the optical transmission element 102, to the cable sheath 11 or to the source yarn 12 is prevented.
- adhesion of the core covering 1011 of the optical transmission element 101 to the optical waveguides 10101 and 10102 is prevented.
- the optimum mobility of the optical waveguides within an optical transmission element and the optimal mobility of the optical transmission elements within the optical cable are maintained. Mechanical stresses, in particular tensile and compressive stresses on the optical waveguides within an optical transmission element and tensile and compressive stresses on the optical transmission elements within an optical cable can thus be effectively minimized.
- the wire sheath 1011 of the optical transmission element 101 according to the invention has a low elongation at break, can they are removed without special tools to expose the Licht ⁇ waveguide.
- the low tensile strength of the buffer tube 1011 which is associated with the low elongation at break, is not disadvantageous because the high melting point or softening point of the buffer tube 1011 prevents sticking of the buffer tube 1001 to adjacent surfaces in the optical cable 1 and thus a high mobility of the optical fibers 10101 and 10102 relative to each other and relative to the core sheath 1011 and a high mobility of the optical transmission elements 101 and 102 relative to one another and relative to the cable sheath 11 tone ⁇ provides.
- the optical cable 1 is produced by first forming optical transmission elements, for example the optical transmission elements 101 and 102, and then processing the optical transmission elements to form an optical cable.
- one of the optical transmission elements for example the optical transmission element 101
- the buffer tube 1011 is formed, for example, by providing a mixture of a matrix material and a filler and extruding the buffer tube 1011 from the mixture.
- the Matrix ⁇ material in this case has a melting point of more than 85 0 C, and the mass fraction of the filler to the entire Mas ⁇ se the mixture is at least 30%.
- the matrix material is, for example, a thermoplastic polymer having a melting point of at least 110 ° C.
- the matrix polymer may in particular be a polyolefin, for example polyethylene or Polypropylene, in particular LDPE or MDPE or HDPE, or an elastomer or a copolymer of an elastomer.
- the optical transmission elements for example the optical transmission elements 101 and 102, are further processed into an optical cable 1 by forming a cable sheath 11 around the optical transmission elements.
- the cable sheath 11 is formed by supplying the optical transmission elements to an extruder head, by means of which a protective sleeve which is resistant to transverse pressure is extruded around the optical transmission elements.
- the buffer tube 1011 can be heated to temperatures of more than 85 0 C.
- a matrix polymer can be selected which has a melting or softening point which is sufficiently far above the highest temperature achieved in the production of the optical cable 1 to bond the buffer tube 1011 to adjacent surfaces within the optical cable 1 to avoid. Furthermore, by filling the matrix polymer with a filler whose mass fraction contributes at least 30% to the mass of the buffer tube, an elongation at break of the buffer tube 1011 can be set which is sufficiently small to remove the buffer tube 1011 from the optical package To allow transmission element 101 without special tools special. LIST OF REFERENCE NUMBERS
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05770700A EP1771760A1 (en) | 2004-07-23 | 2005-07-21 | Optical cable and method for the production thereof |
JP2007521789A JP2008506996A (en) | 2004-07-23 | 2005-07-21 | Optical cable and method for making optical cable |
CA002573979A CA2573979A1 (en) | 2004-07-23 | 2005-07-21 | Optical cable and method for the production thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004035809.5 | 2004-07-23 | ||
DE200410035809 DE102004035809A1 (en) | 2004-07-23 | 2004-07-23 | Optical cable and method of making an optical cable |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006010359A1 true WO2006010359A1 (en) | 2006-02-02 |
Family
ID=35005842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2005/001282 WO2006010359A1 (en) | 2004-07-23 | 2005-07-21 | Optical cable and method for the production thereof |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1771760A1 (en) |
JP (1) | JP2008506996A (en) |
CN (1) | CN1989433A (en) |
CA (1) | CA2573979A1 (en) |
DE (1) | DE102004035809A1 (en) |
WO (1) | WO2006010359A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3825747A1 (en) * | 2019-11-19 | 2021-05-26 | Corning Research & Development Corporation | Talcum-free flame retardant fiber optical cable with micro-modules |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006004010A1 (en) * | 2006-01-27 | 2007-08-09 | CCS Technology, Inc., Wilmington | Optical cable and method of making an optical cable |
JP6017415B2 (en) * | 2010-04-30 | 2016-11-02 | コーニング オプティカル コミュニケイションズ リミテッド ライアビリティ カンパニー | Optical fiber cable with access feature and method of manufacturing the same |
CN106886076B (en) | 2010-10-28 | 2019-11-05 | 康宁光缆系统有限责任公司 | Method with extruded type close to the fiber optic cables of feature and for manufacturing fiber optic cables |
US9201208B2 (en) | 2011-10-27 | 2015-12-01 | Corning Cable Systems Llc | Cable having core, jacket and polymeric jacket access features located in the jacket |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4927570A (en) * | 1987-11-25 | 1990-05-22 | Kabelmetal Electro Gmbh | Method for manufacturing optical cables |
US5133034A (en) * | 1991-08-20 | 1992-07-21 | At&T Bell Laboratories | Communications cable having a strength member system disposed between two layers of waterblocking material |
EP0890860A2 (en) * | 1997-07-10 | 1999-01-13 | Alcatel | Optical fiber cable components made from polyolefin materials |
EP1115017A1 (en) * | 2000-01-04 | 2001-07-11 | Lucent Technologies Inc. | Polyamide/polyolefin fiber optic buffer tube material |
US20020001440A1 (en) * | 2000-05-29 | 2002-01-03 | Alcatel | Protective skin for optical fibers |
EP1369724A2 (en) * | 2002-06-07 | 2003-12-10 | FITEL USA CORPORATION (a Delaware Corporation) | Protective cable structure for optical fibers and its method of installation |
EP1382641A1 (en) * | 2002-07-19 | 2004-01-21 | Acome Société Cooperative De Production, Société Anonyme, A Capital Variable | Optical cable comprising a particular sheath |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3504041A1 (en) * | 1984-06-29 | 1986-01-02 | Siemens AG, 1000 Berlin und 8000 München | OPTICAL CABLE FOR HIGH VOLTAGE LEADERS |
RU2087015C1 (en) * | 1989-09-13 | 1997-08-10 | Сумитомо Электрик Индастриз, Лтд. | Submarine extended device which has fiber- optical members |
US5574816A (en) * | 1995-01-24 | 1996-11-12 | Alcatel Na Cable Sytems, Inc. | Polypropylene-polyethylene copolymer buffer tubes for optical fiber cables and method for making the same |
IT1290287B1 (en) * | 1997-02-10 | 1998-10-22 | Pirelli Cavi Spa Ora Pirelli C | MOISTURE RESISTANT CABLE |
US6041153A (en) * | 1998-07-01 | 2000-03-21 | Alcatel | Continuous composite reinforced buffer tubes for optical fiber cables |
DE19943116C2 (en) * | 1999-09-09 | 2002-03-28 | Siemens Ag | Electrical and / or optical wires and cables |
FR2798665B1 (en) * | 1999-09-17 | 2003-08-29 | Sagem | EXTRUDABLE THERMOPLASTIC MATERIAL AND FIBER MICROMODULE MANUFACTURED FROM SUCH A MATERIAL |
US6492453B1 (en) * | 1999-09-24 | 2002-12-10 | Alphagary Corporation | Low smoke emission, low corrosivity, low toxicity, low heat release, flame retardant, zero halogen polymeric compositions |
DE60123540T2 (en) * | 2000-09-21 | 2007-08-16 | Draka Comteq B.V. | Manufacturing method of an improved optical fiber cable with thermally bonded optical buffer tubes |
-
2004
- 2004-07-23 DE DE200410035809 patent/DE102004035809A1/en not_active Ceased
-
2005
- 2005-07-21 EP EP05770700A patent/EP1771760A1/en not_active Withdrawn
- 2005-07-21 CA CA002573979A patent/CA2573979A1/en not_active Abandoned
- 2005-07-21 WO PCT/DE2005/001282 patent/WO2006010359A1/en active Application Filing
- 2005-07-21 JP JP2007521789A patent/JP2008506996A/en active Pending
- 2005-07-21 CN CNA2005800249634A patent/CN1989433A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4927570A (en) * | 1987-11-25 | 1990-05-22 | Kabelmetal Electro Gmbh | Method for manufacturing optical cables |
US5133034A (en) * | 1991-08-20 | 1992-07-21 | At&T Bell Laboratories | Communications cable having a strength member system disposed between two layers of waterblocking material |
EP0890860A2 (en) * | 1997-07-10 | 1999-01-13 | Alcatel | Optical fiber cable components made from polyolefin materials |
EP1115017A1 (en) * | 2000-01-04 | 2001-07-11 | Lucent Technologies Inc. | Polyamide/polyolefin fiber optic buffer tube material |
US20020001440A1 (en) * | 2000-05-29 | 2002-01-03 | Alcatel | Protective skin for optical fibers |
EP1369724A2 (en) * | 2002-06-07 | 2003-12-10 | FITEL USA CORPORATION (a Delaware Corporation) | Protective cable structure for optical fibers and its method of installation |
EP1382641A1 (en) * | 2002-07-19 | 2004-01-21 | Acome Société Cooperative De Production, Société Anonyme, A Capital Variable | Optical cable comprising a particular sheath |
Non-Patent Citations (1)
Title |
---|
See also references of EP1771760A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3825747A1 (en) * | 2019-11-19 | 2021-05-26 | Corning Research & Development Corporation | Talcum-free flame retardant fiber optical cable with micro-modules |
US11391900B2 (en) | 2019-11-19 | 2022-07-19 | Corning Research & Development Corporation | Talcum-free flame retardant fiber optical cable with micro-modules |
Also Published As
Publication number | Publication date |
---|---|
DE102004035809A1 (en) | 2006-03-16 |
CN1989433A (en) | 2007-06-27 |
EP1771760A1 (en) | 2007-04-11 |
CA2573979A1 (en) | 2006-02-02 |
JP2008506996A (en) | 2008-03-06 |
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