WO2000077552A1 - Verfahren zur herstellung eines optischen kabels mit überlänge der lichtwellenleiter - Google Patents
Verfahren zur herstellung eines optischen kabels mit überlänge der lichtwellenleiter Download PDFInfo
- Publication number
- WO2000077552A1 WO2000077552A1 PCT/EP2000/005931 EP0005931W WO0077552A1 WO 2000077552 A1 WO2000077552 A1 WO 2000077552A1 EP 0005931 W EP0005931 W EP 0005931W WO 0077552 A1 WO0077552 A1 WO 0077552A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- metal tube
- optical
- metal
- welding
- 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
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4486—Protective covering
- G02B6/4488—Protective covering using metallic tubes
-
- 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
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4484—Manufacturing methods of optical cables with desired surplus length between fibres and protection features
Definitions
- the invention relates to a method for producing an optical cable or a construction element for an optical cable according to the preamble of claim 1.
- DE 39 10 1 22 discloses a method for adjusting the excess length of an optical line containing at least one optical waveguide in relation to an envelope formed as a metal tube.
- the metal tube is pulled through a plastically deforming bending device and then straightened again.
- the idea on which this publication is based is that the limit of the elastic change in length under tensile loading is considerably higher than under compressive loading.
- the metal tube deforms only elastically in the outer region of curvature, but also plastically in the interior, so that there is a resulting shortening of the straightened metal tube.
- the excess length that can be achieved by this method is limited to less than 0.3%.
- the invention is based on the object of producing a method for producing a metal tube containing one or more optical waveguides, an almost any excess length of the optical waveguide being achievable relative to the metal tube.
- FIG. 1 shows a perspective view of part of a according to the teaching of
- the optical cable 1 consists of the optical fibers 2 and the metal tube 3 surrounding the optical fibers 2, which has a longitudinal weld 3a.
- the free space between the optical fibers 2 and the metal tube 3 can be filled with a so-called petroleum jelly in order to prevent longitudinal water migration.
- the number of optical fibers 2 is usually between 6 and 20, but can be up to 144.
- the metal tube 3 has a helical corrugation 3b, through which the metal tube 3 is shortened compared to the smooth tube.
- the optical waveguides 2 have a greater length than the metal tube 3, that is to say they run in a wave, helix or sinusoidal shape in the metal tube 3.
- the excess length can be up to 5%, but is preferably between 0.5 and 1%.
- the wall thickness S of the metal tube is z. B. 1 mm while its outer diameter is 6 mm.
- Aluminum is preferred as the material for the metal tube 3.
- FIG. 2 shows a side view of a device for carrying out the method according to the invention.
- a tape 5 is continuously drawn off from a supply reel 4 and fed to a shaping device 6, in which the tape 5 is formed into a tube with a longitudinal slot.
- Part of this shaping device 6 is an untrimmed trimming device in which the band 5 is cut exactly to the required width.
- the shaping device 6 also consists of a plurality of sets of shaping rolls, not specified.
- the longitudinal slot of the shaped tube is closed by means of a laser welding device 7.
- a first clamping jaw trigger 8 which consists of a plurality of pairs of clamping jaws comprising the tube, is driven by an endless chain. Behind the first jaw trigger 8 is a pipe reducing device 9 z. B. arranged a drawing die in which the diameter of the tube is reduced.
- a second clamping jaw trigger 10 is arranged behind the pipe reducing device 9, which engages the drawn pipe and pulls it through the drawing die.
- the withdrawal speed of the second Sp ⁇ nnb ⁇ cken ⁇ bzuges 10 is regulated in relation to the pull-off speed of the first Sp ⁇ nnb ⁇ cken ⁇ bzuges 8 depending on the sag of the tube between the drawing die and the first clamping jaw pull-off 8.
- Behind the second clamping jaw trigger 10 is a driven trigger disc 11 on the circumferential surface of which the tube rests with several turns. The trigger disc 11 is driven at a trigger speed which is equal to the trigger speed of the second jaw trigger 10.
- a drain device for a plurality of optical fibers 2 is designated, which is equipped with a plurality of coils 15, on which the optical fibers 2 are wound.
- the optical fibers 2 are withdrawn from the coils 15 and inserted into the still open tube in front of the welding device.
- a stationary metal tube projects into the slotted tube, through the interior of which the optical waveguide 2 is guided.
- the metal tube releases the optical waveguide 2 at the earliest behind the welding device 7.
- the metal tube is surrounded by another metal tube in a concentric arrangement.
- a petroleum jelly is filled into the tube under pressure through the annular gap formed by the two concentric metal tubes.
- the length of the optical waveguide 2 and the length of the metal pipe 3 are of the same size.
- a corrugation device 16 is arranged behind the pull-up washer 11, which presses a corrugation into the wall of the tube in a continuous manner of operation.
- the excess length of the optical waveguide 2 depends on the depth of the corrugation and the slope of the corrugation.
- a beading device can also be provided, which forms several beads in the tube wall, several beads in the circumferential direction form a closed bead.
- the excess length depends on the depth or shape of the bead and on the spacing of the beads from one another. The excess length can be set precisely in the method according to the invention.
- a further collet trigger can be provided in front of the corrugating device.
- the speed of the corrugating device 16 or the crimping device can be regulated by dancers arranged in front of and / or behind the corrugating device 16.
- the finished metal tube 13 with the optical fibers 2 therein is finally wound onto a winding drum 12.
- the metal tube is corrugated and corrugated in the same operation as the manufacture of the tube.
- FIG. 3 shows a particularly advantageous application example for an optical element which is produced according to the teaching of the invention.
- the figure shows a particularly inexpensive to manufacture underground cable, in which a slightly corrugated aluminum tube 17 is arranged in the center of the underground cable, in which there are up to 144 optical fibers 2 with an excess length of at least 0.5%.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Manufacturing Of Electric Cables (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/762,436 US6522815B1 (en) | 1999-06-09 | 2000-05-17 | Method of producing an optical cable with an excessive length of the optical waveguides |
DE50000333T DE50000333D1 (de) | 1999-06-09 | 2000-05-17 | Verfahren zur herstellung eines optischen kabels mit überlänge der lichtwellenleiter |
BR0006674-5A BR0006674A (pt) | 1999-06-09 | 2000-05-17 | Processo para produção de um cabo óptico, com comprimento excessivo dos guias de ondas |
EP00938821A EP1103013B1 (de) | 1999-06-09 | 2000-05-17 | Verfahren zur herstellung eines optischen kabels mit überlänge der lichtwellenleiter |
JP2001503552A JP2003502692A (ja) | 1999-06-09 | 2000-05-17 | 光導波路が余剰長さをもつ光ケーブルを製造する方法 |
AT00938821T ATE221673T1 (de) | 1999-06-09 | 2000-05-17 | Verfahren zur herstellung eines optischen kabels mit überlänge der lichtwellenleiter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19926267.5 | 1999-06-09 | ||
DE19926267A DE19926267A1 (de) | 1999-06-09 | 1999-06-09 | Verfahren zur Herstellung eines optischen Kabels oder eines Aufbauelementes für ein optisches Kabel |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000077552A1 true WO2000077552A1 (de) | 2000-12-21 |
Family
ID=7910664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/005931 WO2000077552A1 (de) | 1999-06-09 | 2000-05-17 | Verfahren zur herstellung eines optischen kabels mit überlänge der lichtwellenleiter |
Country Status (9)
Country | Link |
---|---|
US (1) | US6522815B1 (de) |
EP (1) | EP1103013B1 (de) |
JP (1) | JP2003502692A (de) |
KR (1) | KR100796902B1 (de) |
AT (1) | ATE221673T1 (de) |
BR (1) | BR0006674A (de) |
DE (2) | DE19926267A1 (de) |
ES (1) | ES2177514T3 (de) |
WO (1) | WO2000077552A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7088894B2 (en) * | 2003-02-26 | 2006-08-08 | Lg Cable Ltd. | Optical cable having waved metal tube, and method and apparatus for producing the same |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4699511B2 (ja) * | 2005-03-29 | 2011-06-15 | プリスミアン・カビ・エ・システミ・エネルジア・ソチエタ・ア・レスポンサビリタ・リミタータ | 光ケーブルを製造する方法及び装置並びに製造されたケーブル |
US7910855B2 (en) * | 2005-09-23 | 2011-03-22 | Lasx Industries, Inc. | No gap laser welding of coated steel |
US8406590B2 (en) * | 2009-10-06 | 2013-03-26 | Prysmian Cavi E Sistemi Energia S.R.L. | Apparatus for manufacturing an optical cable and cable so manufactured |
US20130098528A1 (en) * | 2011-10-19 | 2013-04-25 | Weatherford/Lamb, Inc. | Methods and apparatus for controlling excess fiber length (efl) in armored cable |
US10173286B2 (en) | 2011-10-19 | 2019-01-08 | Weatherford Technology Holdings, Llc | Optical fiber coating to reduce friction and static charge |
US11598928B2 (en) | 2018-07-20 | 2023-03-07 | Weatherford Technology Holdings, Llc | Cable to reduce optical fiber movement and methods to fabricate |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2331757A1 (de) * | 1973-06-22 | 1975-03-20 | Kabel Metallwerke Ghh | Verfahren zur herstellung von druckfesten metallrohren |
US4232935A (en) * | 1977-09-26 | 1980-11-11 | Kabel- Und Metallwerke Gutehoffnungshuette Ag | Communications cable with optical waveguides |
DE3309996A1 (de) * | 1983-03-19 | 1984-09-20 | kabelmetal electro GmbH, 3000 Hannover | Verfahren zur herstellung eines grundelements fuer ein nachrichtenkabel mit lichtwellenleitern |
DE4003311A1 (de) * | 1990-02-05 | 1991-08-08 | Kabelmetal Electro Gmbh | Verfahren zur herstellung eines grundelementes fuer nachrichtenuebertragungskabel mit lichtwellenleitern |
DE4400824A1 (de) * | 1994-01-13 | 1995-07-20 | Siemens Ag | Verfahren und Vorrichtung zur Längenmessung eines langgestreckten Übertragungselements |
DE19642542A1 (de) * | 1995-11-16 | 1997-05-22 | Siemens Ag | Vorrichtung sowie Verfahren zur Herstellung eines metallischen Röhrchens für Lichtwellenleiter |
GB2331160A (en) * | 1997-10-21 | 1999-05-12 | Bicc Plc | Manufacture of optical fibres and gel in welded metal tube |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2445532C2 (de) * | 1974-09-20 | 1976-09-09 | Aeg Telefunken Kabelwerke | Gewellter umhuellter Faserlichtleiter |
DE2519680A1 (de) * | 1975-04-30 | 1976-11-11 | Siemens Ag | Verfahren zur herstellung eines optischen kabels fuer nachrichtenuebertragungszwecke |
DE2833869A1 (de) * | 1978-07-31 | 1980-02-14 | Siemens Ag | Verfahren zur herstellung eines optischen uebertragungselementes |
DE3910122A1 (de) * | 1989-03-29 | 1990-10-04 | Philips Patentverwaltung | Verfahren zur einstellung der ueberlaenge einer optischen leitung |
DE4210633C2 (de) * | 1992-03-31 | 1995-04-27 | Siemens Ag | Verfahren zur Erzeugung von Lichtwellenleiter-Überlängen und Vorrichtung zur Durchführung des Verfahrens |
DE4434133A1 (de) * | 1994-09-24 | 1996-03-28 | Kabelmetal Electro Gmbh | Verfahren zur Herstellung eines optischen Kabels aus einem Metallrohr |
-
1999
- 1999-06-09 DE DE19926267A patent/DE19926267A1/de not_active Withdrawn
-
2000
- 2000-05-17 US US09/762,436 patent/US6522815B1/en not_active Expired - Fee Related
- 2000-05-17 WO PCT/EP2000/005931 patent/WO2000077552A1/de active IP Right Grant
- 2000-05-17 KR KR1020017001677A patent/KR100796902B1/ko not_active IP Right Cessation
- 2000-05-17 AT AT00938821T patent/ATE221673T1/de not_active IP Right Cessation
- 2000-05-17 EP EP00938821A patent/EP1103013B1/de not_active Expired - Lifetime
- 2000-05-17 DE DE50000333T patent/DE50000333D1/de not_active Expired - Lifetime
- 2000-05-17 BR BR0006674-5A patent/BR0006674A/pt not_active IP Right Cessation
- 2000-05-17 ES ES00938821T patent/ES2177514T3/es not_active Expired - Lifetime
- 2000-05-17 JP JP2001503552A patent/JP2003502692A/ja not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2331757A1 (de) * | 1973-06-22 | 1975-03-20 | Kabel Metallwerke Ghh | Verfahren zur herstellung von druckfesten metallrohren |
US4232935A (en) * | 1977-09-26 | 1980-11-11 | Kabel- Und Metallwerke Gutehoffnungshuette Ag | Communications cable with optical waveguides |
DE3309996A1 (de) * | 1983-03-19 | 1984-09-20 | kabelmetal electro GmbH, 3000 Hannover | Verfahren zur herstellung eines grundelements fuer ein nachrichtenkabel mit lichtwellenleitern |
DE4003311A1 (de) * | 1990-02-05 | 1991-08-08 | Kabelmetal Electro Gmbh | Verfahren zur herstellung eines grundelementes fuer nachrichtenuebertragungskabel mit lichtwellenleitern |
DE4400824A1 (de) * | 1994-01-13 | 1995-07-20 | Siemens Ag | Verfahren und Vorrichtung zur Längenmessung eines langgestreckten Übertragungselements |
DE19642542A1 (de) * | 1995-11-16 | 1997-05-22 | Siemens Ag | Vorrichtung sowie Verfahren zur Herstellung eines metallischen Röhrchens für Lichtwellenleiter |
GB2331160A (en) * | 1997-10-21 | 1999-05-12 | Bicc Plc | Manufacture of optical fibres and gel in welded metal tube |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7088894B2 (en) * | 2003-02-26 | 2006-08-08 | Lg Cable Ltd. | Optical cable having waved metal tube, and method and apparatus for producing the same |
Also Published As
Publication number | Publication date |
---|---|
KR20010072342A (ko) | 2001-07-31 |
EP1103013B1 (de) | 2002-07-31 |
BR0006674A (pt) | 2001-05-02 |
KR100796902B1 (ko) | 2008-01-22 |
ATE221673T1 (de) | 2002-08-15 |
DE19926267A1 (de) | 2000-12-14 |
ES2177514T3 (es) | 2002-12-16 |
JP2003502692A (ja) | 2003-01-21 |
EP1103013A1 (de) | 2001-05-30 |
US6522815B1 (en) | 2003-02-18 |
DE50000333D1 (de) | 2002-09-05 |
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