GB2096343A - Optical fibre cable - Google Patents

Optical fibre cable Download PDF

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Publication number
GB2096343A
GB2096343A GB8110252A GB8110252A GB2096343A GB 2096343 A GB2096343 A GB 2096343A GB 8110252 A GB8110252 A GB 8110252A GB 8110252 A GB8110252 A GB 8110252A GB 2096343 A GB2096343 A GB 2096343A
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GB
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Patent type
Prior art keywords
fibres
cable
material
sheath
optical
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.)
Granted
Application number
GB8110252A
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GB2096343B (en )
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.)
Prysmian Cables and Systems Ltd
Original Assignee
Prysmian Cables and Systems Ltd
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.)
Filing date
Publication date

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4479Fabrication methods
    • G02B6/4486Fabrication methods protective covering
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/441Optical cables built up from sub-bundles
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4429Strengthening and protecting features

Abstract

An optical fibre cable includes first and second optical fibres 1, 2 held together by a coating 3 of a waterproof material such as partially cured silicone rubber, which can be cleanly peeled from the fibres. The waterproof material 3 is covered by an inner sheath 4 of thermoplastics material. Strengthening strands 5 typically of Kevlar material run longitudinally of the cable outside the inner sheath 4. An outer sheath 6 surrounds the strands 5. <IMAGE>

Description

SPECIFICATION Optical fibre cable This invention concerns cables and more particularly cables including optical fibres.

The present invention provides a cable including a first and a second optical fibre coated in and coupled together by a waterproof material cleanly peelable from the fibres, an inner sheath of plastics material surrounding the coated fibres, elongate strengthening strands running longitudinally of the cable around said inner sheath, and an outer sheath of plastics material surrounding said elongate strengthening strands.

The present invention furthermore provides a cable including first and second optical fibres the first of which comprises first and second segments optically joined to one another, the second of which spans the join in the first fibre, and means defining an outer sheath surrounding said fibres whereby the second of said fibres contributes to the strength of the join in the first of the fibres.

In order that the invention may be more fully understood and readily carried into effect, embodiments thereof and an apparatus for manufacturing the same will now be described by way of illustrative example with reference to the accompanying drawings wherein: Figure 1 is a sectional view of an optical fibre cable according to the invention, Figures 2 and 3 illustrate schematically apparatus for manufacturing the cable shown in Figure 1, Figure 4 illustrates schematically the configuration of joints between optical fibres in the cable of Figure 1, and Figure 5 is a sectional view of another embodiment of optical fibre cable according to the invention, and Figure 6 is a sectional view of yet a further embodiment of optical fibre according to the invention.

Referring firstly to Figure 1, the cable contains two optical fibres 1 and 2, typically defining forward and return signal paths respectively for a duplex communication iink. The optical fibres may be of conventional type, typically having an outer diameter of 0-7 mm and an outer tight protective coating comprising an inner layer of silicone rubber and an outer layer of nylon.

The fibres 1 and 2 are coated with a material 3 which also fills the interstitial spaces between the fibres. The material 3 is selected to be water repellent, so as to prevent water from contacting the fibres and to be sufficiently compliant that it is cleanly peelable from the fibres, so that the material can be easily cleaned from the ends of the fibres to permit jointing of the cable. Water can corrode the optical fibres and can promote surface cracks when the fibres are under stress.

Also, if water freezes in contact with the fibres, the resulting mechanical pressure can cause fibre breaks. A suitable material 3 is partially cured silicone rubber, or alternatively a waxy material such as the vinyl resin sold under the trade name "Elvax" can be used. "Elvax" is manufactured by Du Pont Company U.K. Ltd.

The fibres 1 and 2 and the material 3 are surrounded by a thin but tough protective inner sheath 4 formed of a thermoplastic elastomer selected so that when applied as a hot extrudate, it does not melt or degrade the aforementioned properties of the material 3 and the aforementioned original tight protective coating put on the fibres at the time of their manufacture.

It is found that nylon is not a satisfactory material for the sheath 4 because the hot extrudate melts and sticks to the tight nylon protective coating on the fibre. A suitable material for the sheath 4 is a thermoplastic elastomer such as a polyester elastomer, for example "Hytrel" manufactured by Du Pont Company U.K. Ltd. The sheath 4 is of the order of 0.2-0.3 mm thick. The inner sheath 4 protects the material 3 and furthermore provides a barrier to hold the fibres 1 and 2 together.

The sheath 4 is surrounded by a plurality of elongate fibrous strands 5 running longitudinally of the cable for the purpose of providing longitudinal strength thereto. The strands 5 also provide a cushioning effect for the fibres 1 and 2 in respect of mechanical impacts applied transversely to the cable. Furthermore the strands 5 pack the cable into a circular cross section.

Suitable fibrous strands 5 are formed of a polyaramid yarn manufactured under the trade name "Kevlar" by Du Pont Company U.K. Limited.

The strands 5 are surrounded by an outer sheath 6 made of a tough plastics material. The sheath 6 is selected to have a sufficiently low coefficient of expansion that when the cable is cooled the resulting compressive force exerted by the sheath 6 on the fibres 1 and 2 is sufficiently small as not to cause optical losses in the fibres due to microbending. The sheath 6 may be formed of a thermoplastic material loaded with a material of a lower thermal expansion coefficient, for example glass fibre. Thus, the sheath 6 may typically comprise nylon loaded with say 33% glass fibre.

It is to be noted that the cable of Figure 1 is of a non-metallic construction which renders it suitable for use in areas containing electric fields, since no voltages can be induced in the cable.

Thus, the cable has application in ships and is also suitable for electrified railways.

A method of making the cable will now be described with reference to Figures 2 and 3.

Referring to Figure 2, the fibres 1 and 2, are fed from separate supply reels 7, 8, through a guide 9. The reels 7, 8 are mounted on a support 10 which is rotatable about an axis 11 so as to permit twisting the fibres around one another into a common strand as they leave the guide 9. The fibres may if desired, be twisted according to the well known method of SZ stranding, although it is preferred for a two fibre cable to have the fibres paralleled.

The fibres are fed to a die 12 fed with material 3, such that the fibres are coated with the material and the spaces between them are filled with the material. If the material 3 is silicone rubber, the coated fibres are then fed to an oven 13 to cure the coating partially. The inner sheath 4 is then applied by means of a die 14. The coated fibres emanating from the die 1 4 are wound onto a drum 1 5. A length of say 10 km may be wound onto the drum 15.

The composite element of the cable wound on the drum 1 5 is then fed to a further die 1 6 shown in Figure 3. The fibres, coated with the material 3 and the inner sheath, are fed into the die together with the Kevlar material 5, and the die applies the outer sheath 6.

The cable thus made in accordance with the present invention can be of much longer lengths than the lengths in which optical fibres are supplied, without the need for jointing adjacent cable lengths. Referring to the cable of Figure 1, and to Figure 4, it will be seen that the fibres 1 and 2 each comprise more than one optical fibre 1 a, 1 b; 2a, 2b, 2c, the fibres being joined by factory made joints 17, for example utilising fusion splicing. The joints 1 7 in the two fibres 1 and 2 are arranged in a staggered fashion. Thus, when the fibres are encased in the material 3, the sheath 4 and the fibre 2a provide support and strength to the joint 1 7 between the fibres 1 a, 1 b.

The other joints are similarly supported. Optical fibres are typically manufactured in 1--2 km lengths and by means of this arrangement it is possible to provide long continuous lengths of cable.

Another example of a cable according to the invention is shownin Figure 5. The construction is generally similar to that shown in Figure 1 and like parts are marked with the same reference numerals as in Figure 1. The cable of Figure 5 includes four optical fibres 1, 2, 18 and 19, the material 3 filling the interstices between them. It will be appreciated that other numbers of optical fibres could be included in the cable, as desired.

Preferably the optical fibres are twisted around one another, except typically in the case of a two fibre cable when the fibres would be paralleled without twist.

Another example of a four fibre cable is shown in Figure 6. The fibres 1, 2 and 8, 9 are grouped together in pairs, each pair being surrounded by a respective coating 3a, b of the material 3 and a respective inner sheath 4a, b. The pairs are arranged centrally within the outer sheath 6, surrounded by the fibrous material 5.

It will be appreciated that to manufacture the cable of Figure 5, two additional supply reels would be provided in the apparatus of Figure 2, to feed the fibres 8, 9 into the die 12. Also to manufacture the cable of Figure 6, two composite elements from two reels 15, would feed into the die 16 of Figure 3.

Many other modifications and variations falling within the spirit and scope of the invention will be apparent to those skilled in the art.

Claims: (Filed on 25/3/82) 1. A cable including a first and a second optical fibre coated in and coupled together by a waterproof material cleanly peelable from the fibres, an inner sheath of plastics material surrounding the coated fibres, elongate strengthening strands running longitudinally of the cable around said inner sheath, and an outer sheath of plastics material surrounding said elongate strenghtening strands.

2. A cable according to claim 1 wherein said cleanly peelable material comprises partially cured silicone rubber 3. A cable according to claim 1 wherein said cleanly peelable material comprises a vinyl resin.

4. A cable according to any preceding claim wherein said inner sheath is made of a thermoplastic elastomer.

5. A cable according to claim 4 wherein said elastomer is a polyester.

6. A cable according to any preceding claim wherein said strengthening strands are formed of a polyaramid yarn.

7. A cable according to any preceding claim wherein the outer sheath comprises a thermoplastics material loaded with a material of lower thermal expansion coefficient than said thermoplastics sheath material.

8. A cable according to claim 7 wherein said outer sheath is made of nylon loaded with glass fibre material.

9. A cable according to any preceding claim wherein said optical fibres are twisted around one another in a given stranding pattern.

1 0. A cable according to any preceding claim wherein at least one of said fibres includes first and second segments joined endwise to one another, the joint of said segments being spanned by an unjoined portion of the other fibre.

11. A cable according to claim 10 wherein said segments are joined by fusion splicing.

1 2. A cable according to any preceding claim including third and fourth optical fibres coated in and coupled together by said waterproof material.

13. A cable according to claim 12 including a further inner sheath of plastics material surrounding the third and fourth optical fibres.

14. A cable according to claim 12 wherein said waterproof material fills the intersitial spaces between and coupled together all of the four optical fibres, said inner sheath surrounding the four optical fibres.

1 5. A cable substantially as hereinbefore described with reference to Figure 1, 4, 5 or 6 of the accompanying drawings.

1 6. A method of manufacturing a cable as claimed in any preceding claim, comprising feeding the first and second fibres into a first die wherein the fibres are coated with and coupled together by said waterproof material, feeding the coated fibres into a further die wherein the fibres are covered in a material to provide said inner sheath, and feeding said fibres when provided with the inner sheath into another die together

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    3, such that the fibres are coated with the material and the spaces between them are filled with the material. If the material 3 is silicone rubber, the coated fibres are then fed to an oven
    13 to cure the coating partially. The inner sheath
    4 is then applied by means of a die 14. The coated fibres emanating from the die 1 4 are wound onto a drum 1 5. A length of say 10 km may be wound onto the drum 15.
    The composite element of the cable wound on the drum 1 5 is then fed to a further die 1 6 shown in Figure 3. The fibres, coated with the material 3 and the inner sheath, are fed into the die together with the Kevlar material 5, and the die applies the outer sheath 6.
    The cable thus made in accordance with the present invention can be of much longer lengths than the lengths in which optical fibres are supplied, without the need for jointing adjacent cable lengths. Referring to the cable of Figure 1, and to Figure 4, it will be seen that the fibres 1 and 2 each comprise more than one optical fibre
    1 a, 1 b; 2a, 2b, 2c, the fibres being joined by factory made joints 17, for example utilising fusion splicing. The joints 1 7 in the two fibres 1 and 2 are arranged in a staggered fashion. Thus, when the fibres are encased in the material 3, the sheath 4 and the fibre 2a provide support and strength to the joint 1 7 between the fibres 1 a, 1 b.
    The other joints are similarly supported. Optical fibres are typically manufactured in 1--2 km lengths and by means of this arrangement it is possible to provide long continuous lengths of cable.
    Another example of a cable according to the invention is shownin Figure 5. The construction is generally similar to that shown in Figure 1 and like parts are marked with the same reference numerals as in Figure 1. The cable of Figure 5 includes four optical fibres 1, 2, 18 and 19, the material 3 filling the interstices between them. It will be appreciated that other numbers of optical fibres could be included in the cable, as desired.
    Preferably the optical fibres are twisted around one another, except typically in the case of a two fibre cable when the fibres would be paralleled without twist.
    Another example of a four fibre cable is shown in Figure 6. The fibres 1, 2 and 8, 9 are grouped together in pairs, each pair being surrounded by a respective coating 3a, b of the material 3 and a respective inner sheath 4a, b. The pairs are arranged centrally within the outer sheath 6, surrounded by the fibrous material 5.
    It will be appreciated that to manufacture the cable of Figure 5, two additional supply reels would be provided in the apparatus of Figure 2, to feed the fibres 8, 9 into the die 12. Also to manufacture the cable of Figure 6, two composite elements from two reels 15, would feed into the die 16 of Figure 3.
    Many other modifications and variations falling within the spirit and scope of the invention will be apparent to those skilled in the art.
    Claims: (Filed on 25/3/82) 1. A cable including a first and a second optical fibre coated in and coupled together by a waterproof material cleanly peelable from the fibres, an inner sheath of plastics material surrounding the coated fibres, elongate strengthening strands running longitudinally of the cable around said inner sheath, and an outer sheath of plastics material surrounding said elongate strenghtening strands.
    2. A cable according to claim 1 wherein said cleanly peelable material comprises partially cured silicone rubber 3. A cable according to claim 1 wherein said cleanly peelable material comprises a vinyl resin.
    4. A cable according to any preceding claim wherein said inner sheath is made of a thermoplastic elastomer.
    5. A cable according to claim 4 wherein said elastomer is a polyester.
    6. A cable according to any preceding claim wherein said strengthening strands are formed of a polyaramid yarn.
    7. A cable according to any preceding claim wherein the outer sheath comprises a thermoplastics material loaded with a material of lower thermal expansion coefficient than said thermoplastics sheath material.
    8. A cable according to claim 7 wherein said outer sheath is made of nylon loaded with glass fibre material.
    9. A cable according to any preceding claim wherein said optical fibres are twisted around one another in a given stranding pattern.
    1 0. A cable according to any preceding claim wherein at least one of said fibres includes first and second segments joined endwise to one another, the joint of said segments being spanned by an unjoined portion of the other fibre.
    11. A cable according to claim 10 wherein said segments are joined by fusion splicing.
    1 2. A cable according to any preceding claim including third and fourth optical fibres coated in and coupled together by said waterproof material.
    13. A cable according to claim 12 including a further inner sheath of plastics material surrounding the third and fourth optical fibres.
    14. A cable according to claim 12 wherein said waterproof material fills the intersitial spaces between and coupled together all of the four optical fibres, said inner sheath surrounding the four optical fibres.
    1 5. A cable substantially as hereinbefore described with reference to Figure 1, 4, 5 or 6 of the accompanying drawings.
    1 6. A method of manufacturing a cable as claimed in any preceding claim, comprising feeding the first and second fibres into a first die wherein the fibres are coated with and coupled together by said waterproof material, feeding the coated fibres into a further die wherein the fibres are covered in a material to provide said inner sheath, and feeding said fibres when provided with the inner sheath into another die together
    with said strengthening strands so as to apply said outer sheath.
    1 7. A method according to claim 1 6 including twisting in a predetermined stranding pattern the fibres fed to the first die.
    18. A method according to claim 16 or 17 including partially curing the waterproof material coated onto the fibres by the first die.
    1 9. A method of manufacturing a cable substantially as hereinbefore described with reference to Figures 2 and 3 of the accompanying drawings.
GB8110252A 1981-04-01 1981-04-01 Optical fibre cable Expired GB2096343B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8110252A GB2096343B (en) 1981-04-01 1981-04-01 Optical fibre cable

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8110252A GB2096343B (en) 1981-04-01 1981-04-01 Optical fibre cable
ES511409A ES8304324A1 (en) 1981-04-01 1982-03-30 Improvements in the manufacture of fiber optic cables.
CA 400171 CA1167675A (en) 1981-04-01 1982-03-31 Optical fibre cable
FR8205511A FR2503385B1 (en) 1981-04-01 1982-03-31 Method cable manufacturing optical fiber cable thus obtained

Publications (2)

Publication Number Publication Date
GB2096343A true true GB2096343A (en) 1982-10-13
GB2096343B GB2096343B (en) 1984-08-15

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GB8110252A Expired GB2096343B (en) 1981-04-01 1981-04-01 Optical fibre cable

Country Status (4)

Country Link
CA (1) CA1167675A (en)
ES (1) ES8304324A1 (en)
FR (1) FR2503385B1 (en)
GB (1) GB2096343B (en)

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558967A1 (en) * 1984-01-27 1985-08-02 Pirelli Cavi Spa Method for connecting two optical fibers and connecting thus obtained
GB2169099A (en) * 1982-12-13 1986-07-02 Raychem Ltd Fibre optic cable for use at high voltage
GB2169100A (en) * 1982-12-13 1986-07-02 Raychem Ltd Fibre optic cable for use at high voltage
US4659174A (en) * 1983-05-19 1987-04-21 U.S. Philips Corporation Optical cable element and cable, respectively, and method of manufacturing same
EP0233805A2 (en) * 1986-01-31 1987-08-26 AT&amp;T Corp. Optical fibre cable
US4725453A (en) * 1984-12-19 1988-02-16 Ube-Nitto Kasei Co., Ltd. Method of production of a reinforced optical fiber
EP0284667A2 (en) * 1987-03-31 1988-10-05 The Boeing Company A method of manufacturing reinforced optical fiber
EP0295931A1 (en) * 1987-06-17 1988-12-21 BICC Public Limited Company Optical fibre cables
US4893893A (en) * 1986-01-31 1990-01-16 American Telephone And Telegraph Co., At&T Bell Laboratories Strengthened buffered optical fiber
US4909593A (en) * 1987-12-21 1990-03-20 Alcatel N.V. Optical cable having at least two separate multiple-fiber units each having its own soft plastic envelope
US4953945A (en) * 1987-06-03 1990-09-04 Sumitomo Electric Industries, Ltd. Transmission protective coated optical fiber tape
EP0553990A1 (en) * 1992-01-28 1993-08-04 AT&amp;T Corp. Utility optical fiber cable
US5561731A (en) * 1995-06-15 1996-10-01 Siecor Corporation Flexible casing for optical ribbons
EP0829742A1 (en) * 1996-09-16 1998-03-18 PIRELLI CAVI E SISTEMI S.p.A. Optical cable for data transmission on local area networks
US5908873A (en) * 1995-12-20 1999-06-01 Borden Chemicals, Inc. Peelable bonded ribbon matrix material; optical fiber bonded ribbon arrays containing same; and process for preparing said optical fiber bonded ribbon arrays
EP1059548A2 (en) * 1999-06-10 2000-12-13 Corning Cable Systems LLC Fiber optic cable units
US6449412B1 (en) 1998-06-30 2002-09-10 Corning Cable Systems Llc Fiber optic ribbon interconnect cable
US6538045B1 (en) 1999-12-23 2003-03-25 Dsm N.V. Optical fiber coating compositions containing secondary or tertiary amino silicone-containing additive
US6636673B2 (en) 2000-12-26 2003-10-21 Corning Cable Systems Llc Fiber optic ribbon interconnects and breakout cables
EP2196834A1 (en) 2008-12-12 2010-06-16 Draka Comteq B.V. A buffered optical fiber, a telecommunications cable including a plurality of optical fibers, and a method of fabricating such a fiber.
US8041166B2 (en) 2008-10-28 2011-10-18 Adc Telecommunications, Inc. Flat drop cable
US8107781B2 (en) 2009-11-20 2012-01-31 Adc Telecommunications, Inc. Fiber optic cable
US8184935B2 (en) 2009-10-21 2012-05-22 Adc Telecommunications, Inc. Flat drop cable with center strength member
US8224141B2 (en) 2008-05-27 2012-07-17 Adc Telecommunications, Inc. Multi-jacketed fiber optic cable
US8238706B2 (en) 2010-05-19 2012-08-07 Adc Telecommunications, Inc. Flat drop cable with medial bump
US8422843B2 (en) 2008-03-28 2013-04-16 Adc Telecommunications, Inc. Multi-fiber fiber optic cable
US8548293B2 (en) 2008-05-28 2013-10-01 Adc Telecommunications, Inc. Fiber optic cable
US8781281B2 (en) 2011-07-21 2014-07-15 Adc Telecommunications, Inc. Drop cable with angled reinforcing member configurations
US8798417B2 (en) 2012-09-26 2014-08-05 Corning Cable Systems Llc Binder film for a fiber optic cable
US8805144B1 (en) 2013-09-24 2014-08-12 Corning Optical Communications LLC Stretchable fiber optic cable
US8885998B2 (en) 2010-12-09 2014-11-11 Adc Telecommunications, Inc. Splice enclosure arrangement for fiber optic cables
US8913862B1 (en) 2013-09-27 2014-12-16 Corning Optical Communications LLC Optical communication cable
US8915659B2 (en) 2010-05-14 2014-12-23 Adc Telecommunications, Inc. Splice enclosure arrangement for fiber optic cables
US9075212B2 (en) 2013-09-24 2015-07-07 Corning Optical Communications LLC Stretchable fiber optic cable
US9140867B1 (en) 2013-08-09 2015-09-22 Corning Optical Communications LLC Armored optical fiber cable
US9316802B2 (en) 2012-08-24 2016-04-19 Commscope Technologies Llc Optical fiber cable having reinforcing layer of tape heat-bonded to jacket
US9594226B2 (en) 2013-10-18 2017-03-14 Corning Optical Communications LLC Optical fiber cable with reinforcement
US9739966B2 (en) 2011-02-14 2017-08-22 Commscope Technologies Llc Fiber optic cable with electrical conductors

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Publication number Priority date Publication date Assignee Title
FR2555764B1 (en) * 1983-11-24 1986-10-10 Nonclerq Bernard Cable of optical fiber transmission and making application links making method

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Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169099A (en) * 1982-12-13 1986-07-02 Raychem Ltd Fibre optic cable for use at high voltage
GB2169100A (en) * 1982-12-13 1986-07-02 Raychem Ltd Fibre optic cable for use at high voltage
US4659174A (en) * 1983-05-19 1987-04-21 U.S. Philips Corporation Optical cable element and cable, respectively, and method of manufacturing same
US4690496A (en) * 1984-01-27 1987-09-01 Societa Cavi Pirelli S.P.A. Optical fiber joint with reinforcing filament and method of making such joint
GB2153548A (en) * 1984-01-27 1985-08-21 Pirelli Cavi Spa Improvements in or relating to joining optical fibres
FR2558967A1 (en) * 1984-01-27 1985-08-02 Pirelli Cavi Spa Method for connecting two optical fibers and connecting thus obtained
US4725453A (en) * 1984-12-19 1988-02-16 Ube-Nitto Kasei Co., Ltd. Method of production of a reinforced optical fiber
EP0233805A2 (en) * 1986-01-31 1987-08-26 AT&amp;T Corp. Optical fibre cable
US4893893A (en) * 1986-01-31 1990-01-16 American Telephone And Telegraph Co., At&T Bell Laboratories Strengthened buffered optical fiber
EP0233805A3 (en) * 1986-01-31 1988-03-23 AT&amp;T Corp. Optical fibre cable
EP0284667A2 (en) * 1987-03-31 1988-10-05 The Boeing Company A method of manufacturing reinforced optical fiber
EP0284667A3 (en) * 1987-03-31 1990-06-20 The Boeing Company A method of manufacturing reinforced optical fiber
US4953945A (en) * 1987-06-03 1990-09-04 Sumitomo Electric Industries, Ltd. Transmission protective coated optical fiber tape
US4930860A (en) * 1987-06-17 1990-06-05 Bicc Plc Propellable optical fiber cables
EP0295931A1 (en) * 1987-06-17 1988-12-21 BICC Public Limited Company Optical fibre cables
US4909593A (en) * 1987-12-21 1990-03-20 Alcatel N.V. Optical cable having at least two separate multiple-fiber units each having its own soft plastic envelope
EP0553990A1 (en) * 1992-01-28 1993-08-04 AT&amp;T Corp. Utility optical fiber cable
US5345525A (en) * 1992-01-28 1994-09-06 At&T Bell Laboratories Utility optical fiber cable
US5561731A (en) * 1995-06-15 1996-10-01 Siecor Corporation Flexible casing for optical ribbons
US6455607B1 (en) 1995-12-20 2002-09-24 Borden Chemical, Inc. Peelable bonded ribbon matrix material; optical fiber bonded ribbon arrays containing same; and process for preparing said optical fiber bonded ribbon arrays
US5908873A (en) * 1995-12-20 1999-06-01 Borden Chemicals, Inc. Peelable bonded ribbon matrix material; optical fiber bonded ribbon arrays containing same; and process for preparing said optical fiber bonded ribbon arrays
US5978536A (en) * 1996-09-16 1999-11-02 Pirelli Cavi E Sistemi S.P.A. Optical cable with core decoupled from sheath and yarn strands uniformly adhering to sheath
EP0829742A1 (en) * 1996-09-16 1998-03-18 PIRELLI CAVI E SISTEMI S.p.A. Optical cable for data transmission on local area networks
US6449412B1 (en) 1998-06-30 2002-09-10 Corning Cable Systems Llc Fiber optic ribbon interconnect cable
EP1059548A2 (en) * 1999-06-10 2000-12-13 Corning Cable Systems LLC Fiber optic cable units
EP1059548A3 (en) * 1999-06-10 2004-01-28 Corning Cable Systems LLC Fiber optic cable units
US6538045B1 (en) 1999-12-23 2003-03-25 Dsm N.V. Optical fiber coating compositions containing secondary or tertiary amino silicone-containing additive
US7041712B2 (en) 1999-12-23 2006-05-09 Dsm Ip Assets B.V. Optical fiber coating compositions containing secondary or tertiary amino silicone-containing additive
US6636673B2 (en) 2000-12-26 2003-10-21 Corning Cable Systems Llc Fiber optic ribbon interconnects and breakout cables
US8422843B2 (en) 2008-03-28 2013-04-16 Adc Telecommunications, Inc. Multi-fiber fiber optic cable
US8224141B2 (en) 2008-05-27 2012-07-17 Adc Telecommunications, Inc. Multi-jacketed fiber optic cable
US8275225B2 (en) 2008-05-27 2012-09-25 Adc Telecommunications, Inc. Multi-jacketed fiber optic cable
US9335503B2 (en) 2008-05-28 2016-05-10 Commscope Technologies Llc Fiber optic cable
US8903212B2 (en) 2008-05-28 2014-12-02 Adc Telecommunications, Inc. Fiber optic cable
US8548293B2 (en) 2008-05-28 2013-10-01 Adc Telecommunications, Inc. Fiber optic cable
US8897613B2 (en) 2008-10-28 2014-11-25 Adc Telecommunications, Inc. Flat drop cable
US8290320B2 (en) 2008-10-28 2012-10-16 Adc Telecommunications, Inc. Flat drop cable
US8041166B2 (en) 2008-10-28 2011-10-18 Adc Telecommunications, Inc. Flat drop cable
US8346040B2 (en) 2008-12-12 2013-01-01 Draka Comteq, B.V. Buffered optical fiber
EP2196834A1 (en) 2008-12-12 2010-06-16 Draka Comteq B.V. A buffered optical fiber, a telecommunications cable including a plurality of optical fibers, and a method of fabricating such a fiber.
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Also Published As

Publication number Publication date Type
CA1167675A1 (en) grant
ES8304324A1 (en) 1983-03-01 application
ES511409D0 (en) grant
FR2503385A1 (en) 1982-10-08 application
ES511409A0 (en) 1983-03-01 application
CA1167675A (en) 1984-05-22 grant
FR2503385B1 (en) 1986-07-11 grant
GB2096343B (en) 1984-08-15 grant

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Effective date: 20010331