DE3935982C2 - Fiber optic cable - Google Patents
Fiber optic cableInfo
- Publication number
- DE3935982C2 DE3935982C2 DE3935982A DE3935982A DE3935982C2 DE 3935982 C2 DE3935982 C2 DE 3935982C2 DE 3935982 A DE3935982 A DE 3935982A DE 3935982 A DE3935982 A DE 3935982A DE 3935982 C2 DE3935982 C2 DE 3935982C2
- Authority
- DE
- Germany
- Prior art keywords
- relief elements
- optical fiber
- fiber cable
- strain relief
- adhesive
- 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 - Fee Related
Links
- 239000000835 fiber Substances 0.000 title description 3
- 239000013307 optical fiber Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000004831 Hot glue Substances 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004264 Petrolatum Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229940066842 petrolatum Drugs 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
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
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- 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
- G02B6/4434—Central member to take up tensile loads
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulated Conductors (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Description
Die Anmeldung betrifft ein optisches Kabel gemäß dem Oberbegriff des Anspruches 1.The application concerns an optical cable according to the Preamble of claim 1.
Derartige Kabel sind aus der DE 31 44 851 A1 und aus der DE 33 42 274 A1 bekannt. Aus der DE 33 42 274 A1 ist es bekannt, daß die Zugfestigkeit derartiger Kabel insbesondere durch Temperaturbelastungen vermindert sein kann.Such cables are from DE 31 44 851 A1 and from DE 33 42 274 A1 known. From DE 33 42 274 A1 it is known that the tensile strength of such cables be reduced in particular by temperature loads can.
Der Erfindung liegt die Aufgabe zugrunde, ein Lichtwellenleiterkabel der eingangs genannten Art anzugeben, bei dem die Zugfestigkeit durch Temperaturbelastungen nicht beeinträchtigt wird. Diese Aufgabe wird durch ein optisches Kabel der eingangs genannten Art mit den kennzeichnenden Merkmalen des Anspruches 1 gelöst.The invention is based on the object Optical fiber cable of the type mentioned specify the tensile strength by Temperature loads are not affected. This Task is through an optical cable at the beginning mentioned type with the characteristic features of the Claim 1 solved.
Die Erfindung beruht auf der Erkenntnis, daß die Verminderung der Zugfestigkeit der bekannten gattungsgemäßen Kabel im wesentlichen auf eine ungünstige Beeinflussung der Klebeeigenschaften des zur Verklebung der Zugentlastungselemente mit dem Metallband dienenden Materials durch das Petrolat zurückzuführen ist.The invention is based on the knowledge that the Reduction in the tensile strength of the known Generic cables essentially to an unfavorable Influencing the adhesive properties of the adhesive the strain relief elements serving with the metal band Material due to the petrolatum.
Die Erfindung wird im folgenden an einem Ausführungsbeispiel erläutert. The invention is in the following Exemplary embodiment explained.
Die Fig. 1 und 2 zeigen ein Lichtwellenleiterkabel mit einem Zentralelement 1, mit Lichtwellenleiteradern 2, die um das Zentralelement 1 angeordnet sind, mit einer Hülle 3, die die Lichtwellenleiteradern 2 umgibt, mit Zugentlastungselementen 4, die um die Hülle 3 angeordnet sind, und mit einem Außenmantel 5. Zwischen den Zugentlastungselementen 4 sowie auf der Unterseite der Zugentlastungselemente 4 befindet sich beim Lichtwellenleiterkabel der Fig. 1 erfindungsgemäß eine Masse 6, die eine Längswasserdichtigkeit des Kabels gewährleistet und keine Bestandteile enthält, die in das Klebemittel 7 auf der Oberseite der Zugentlastungselemente 4, welches zur Verklebung der Zugentlastungselemente 4 mit dem Außenmantel 5 dient, eindringen und die Klebeeigenschaften des Klebemittels 7 beeinträchtigen. Die Masse 6 besteht beispielsweise aus einem Wachs, Gel, Elastomer oder einem Weichharz. Die Masse 6 besteht beispielsweise spezieller aus einem ölfreien Schmelzkleber auf der Basis von Polyamid oder aus einer elastomerartigen Verbindung wie Ethylen-Vinylacetat oder Polyurethan, oder sie besteht aus einem Wachs, Gel oder Paste mit einem polymeren Weichmacher. Figs. 1 and 2 show a fiber optic cable having a central element 1, with fiber optic cable cores 2, which are arranged around the central element 1, with a shell 3, which surrounds the optical waveguide cores 2, and having stress members 4 which are arranged around the shell 3, and with an outer jacket 5 . Between the strength members 4 and on the bottom of the strength members 4 1 is located at the optical fiber cable of FIG. According to the invention a mass 6, which ensures a longitudinal water tightness of the cable and does not contain ingredients in the adhesive agent 7 on the top side of the strength members 4, which for bonding serves the strain relief elements 4 with the outer jacket 5 , penetrate and impair the adhesive properties of the adhesive 7 . The mass 6 consists for example of a wax, gel, elastomer or a soft resin. The mass 6 consists, for example, more specifically of an oil-free hot melt adhesive based on polyamide or of an elastomer-like compound such as ethylene-vinyl acetate or polyurethane, or it consists of a wax, gel or paste with a polymeric plasticizer.
Das Lichtwellenleiterkabel der Fig. 3 und 4 unterscheidet sich vom Lichtwellenleiterkabel der Fig. 1 dadurch, daß anstelle von nur einer Lage Zugentlastungselemente 4 zwei Lagen von Zugentlastungselementen 4 vorgesehen sind. Außerdem ist zwischen den Zugentlastungselementen 4 und dem Außenmantel 5 ein Metallband 8 vorgesehen, welches beispielsweise aus Aluminium besteht. Dieses Band dient als Diffusionssperre und verhindert, daß Wasserdampf von außen in das Kabel eindringen kann. Beim Lichtwellenleiterkabel der Fig. 3 und 4 sind die Zug entlastungselemente 4 der äußeren Lage mit dem Metall band 8 verklebt und das Metallband 8 ist seinerseits mit dem Außenmantel 5 verklebt.The optical fiber cable of FIGS. 3 and 4 differs from the optical fiber cable of FIG. 1 in that instead of only one layer of strain relief elements 4, two layers of strain relief elements 4 are provided. In addition, a metal strip 8 is provided between the strain relief elements 4 and the outer jacket 5 , which is made of aluminum, for example. This tape serves as a diffusion barrier and prevents water vapor from entering the cable from outside. When optical fiber cable of FIG. 3 and 4, the train are relief elements 4 of the outer sheet with the metal strip 8 bonded and the metal strip 8 is in turn bonded to the outer jacket 5.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3935982A DE3935982C2 (en) | 1989-10-28 | 1989-10-28 | Fiber optic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3935982A DE3935982C2 (en) | 1989-10-28 | 1989-10-28 | Fiber optic cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3935982A1 DE3935982A1 (en) | 1991-05-02 |
| DE3935982C2 true DE3935982C2 (en) | 1997-11-27 |
Family
ID=6392449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3935982A Expired - Fee Related DE3935982C2 (en) | 1989-10-28 | 1989-10-28 | Fiber optic cable |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3935982C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29722467U1 (en) * | 1997-12-19 | 1998-06-10 | BICC KWO Kabel GmbH, 12459 Berlin | Optical cable for message transmission |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3144851A1 (en) * | 1981-11-11 | 1983-05-19 | Siemens AG, 1000 Berlin und 8000 München | CABLES AND METHOD FOR THEIR PRODUCTION |
| DE3342274A1 (en) * | 1983-11-23 | 1985-05-30 | kabelmetal electro GmbH, 3000 Hannover | Telecommunications cable with optical waveguides and process for the production thereof |
| DE3447057A1 (en) * | 1984-12-22 | 1986-07-03 | AEG KABEL AG, 4050 Mönchengladbach | Fiber optic cable |
| DE3823965A1 (en) * | 1987-10-23 | 1989-05-03 | Felten & Guilleaume Energie | Optical waveguide (LWL) line for conveying (mining) equipment |
-
1989
- 1989-10-28 DE DE3935982A patent/DE3935982C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE3935982A1 (en) | 1991-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: KABEL RHEYDT AG, 4050 MOENCHENGLADBACH, DE |
|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |