公开(公告)号：EP0050495A3

公开(公告)日：1982-06-09

申请号：EP81304842

申请日：1981-10-16

Applicant: BICC Limited

Inventor： Dey, Philip ,  Gaylard, Bernard ,  Taylor, David Alexander

IPC: G02B05/16

CPC classification number: H01B5/108 ,  D07B1/147 ,  G02B6/4483 ,  G02B6/4484 ,  G02B6/4488 ,  G02B6/449 ,  G02B6/4494

Abstract: An overhead electric conductor with optical fibres 3 loosely housed in the bore of a central core 1, which bore also contains a greasy water-impermeable medium 4, is manufactured by causing a preformed elongate metal member 2 of U-shaped transverse cross-section and the optical fibres to advance in the direction of their lengths, the rate of advance of the fibres being restrained. As the U-shaped elongate member 2 is transversely folded around the optical fibres 3, greasy water-impermeable medium 4 is injected into the bore of the elongate metal member 2 under a controlled pressure. The consistency of the greasy water-impermeable medium 4, the pressure and rate at which it is injected into the bore and the degree of restraint imparted to the optical fibres 3 is such that, in a predetermined length of the conductor, the length of the optical fibres exceeds the length of the bore by a controlled extent, preferably 1 to 3%.

公开(公告)号：EP0162472A3

公开(公告)日：1987-10-07

申请号：EP85106406

申请日：1985-05-24

Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

Inventor： Tatsukami, Yoshiharu ,  Fujita, Katsuramaru ,  Furuta, Motonobu ,  Tamura, Toshifumi

IPC: B29D11/00 ,  G02B05/16 ,  D01F08/10 ,  G02B06/44

CPC classification number: G02B6/02033 ,  B29C47/00 ,  B29C47/0014 ,  G02B1/046 ,  G02B1/048 ,  Y10T428/2929 ,  Y10T428/2967 ,  C08L33/10 ,  C08L33/16

Abstract: A plastic optical fiber comprising a core and a cladding, wherein the core is made a polymer comprising units of methyl methacrylate and of a methacrylate ester the ester moiety of which has an alicyclic hydrocarbon of 8 to 20 carbon atoms, and the cladding is made of a fluorine-containing polymer comprising units of the formula:
wherein
R 1 and R 2 are each hydrogen or C, -C 3 alkyl, R 11 is fluorine or trifluoromethyl, and R 12 is C 2 - C 11 fluoroalkyl, which units (I) are derived from fluoroalkyl a-fluoroacrylate or trifluoromethacrylate, which has short- and long-time heat and humidity resistance as well as low attenuation of light transmission.

公开(公告)号：EP0104864A3

公开(公告)日：1986-03-19

申请号：EP83305505

申请日：1983-09-20

Applicant: BICC Public Limited Company

Inventor： Keene, Ian William

IPC: G02B05/16

CPC classification number: G02B6/448 ,  G02B6/4403

Abstract: In a simple and inexpensive method of manufacturing an optical fibre ribbon structure 11, several optical fibres 1 (and if desired one or more than one flexible reinforcing element) are arranged to travel side by side and an overall coating 3 of plastics material is applied to the advancing optical fibres to form a plastics coated optical fibre array 4. This array is fed between a pair of advancing tapes 5 and the advancing taped plastics coated optical fibre array 8 is subjected to a curing operation to cure the plastics material and cause it to bond to the embedded optical fibres 1 and lightly to the tapes 5. The tapes 5 are then peeled away from the array to form an optical fibre ribbon structure 11. The plastics material of the overall coating Is preferably an acrylate or other plastics material that can be cured by ultra-violet radiation.

公开(公告)号：EP0096580A3

公开(公告)日：1986-02-26

申请号：EP83303274

申请日：1983-06-07

Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

Inventor： Kojiro, Tetsuya c/o Kobe Works ,  Takeda, Jun c/o Kobe Works

IPC: G02B05/16 ,  G02B07/26

CPC classification number: G02B6/4428

Abstract: A penetration assembly for an optical fiber cable comprises a pair of axially-aligned cylindrical sleeves 13 surrounding an optical fiber cable 6. An air-tight seal is formed between the optical fiber cable and the sleeves by means of glass connectors 16 connected to the optical fiber cable and flexible metal connectors 15 connected between the glass connectors and the inside of the sleeves. Each glass connector 16 comprises a plurality of cylindrical sections each having a different coefficient of thermal expansion having a value between that of the optical fiber cable 6 and that of the flexible metal connector 15. The coefficient of thermal expansion of the glass connector 16 changes in a stepwise manner from the section connected to the optical fiber cable 6 to the section connected to the flexible metal connector 15. This step-wise change in coefficient of thermal expansion reduces the thermal stresses exerted on each section and prevents cracks due to thermal stress, a common problem with the resinous materials presently used to form air-tight seals in penetration assemblies. Since the air-tight seal between the optical fiber cable and the sleeves is formed from glass and metal, it is more resistant to radiation than presently used seals formed from resinous materials.

公开(公告)号：EP0093395A3

公开(公告)日：1986-01-22

申请号：EP83104122

申请日：1983-04-27

Applicant: Siemens Aktiengesellschaft

Inventor： Barfuss, Jürgen ,  Oestreich, Ulrich, Dipl.-Ing. ,  Schöber, Gernot, Ing. grad. ,  Schrey, Wolfgang, Dipl.-Ing.

IPC: G02B05/16

CPC classification number: G02B6/443 ,  G02B6/4401 ,  G02B6/4486 ,  G02B6/449 ,  G02B6/4494

公开(公告)号：EP0113973A3

公开(公告)日：1985-12-04

申请号：EP83307589

申请日：1983-12-13

Applicant: NORTHERN TELECOM LIMITED

Inventor： McKay, Glen ,  Williams, Robert John

IPC: G02B05/16 ,  G02B05/172

CPC classification number: G02B6/4491 ,  G02B6/449

Abstract: © Apparatus for laying of optical waveguides (16) into sinuous grooves (52) of a support filament (10) in which a laying device surrounding a feed path for the filament has a plurality of elongate guide elements (56) for the waveguides, the elements extending downstream from a carrier (42) and being inclined to the feed path to terminate in free inner ends. The guide elements are rigid and are allowed by the carrier to have lateral swinging movement to enable their free ends to follow the path of a groove in the support filament as it moves along its feed path. A groove locating projection (50) is provided to maintain positional relationship between the carrier and support filament as the filament passes the carrier.

公开(公告)号：EP0056996A3

公开(公告)日：1982-08-11

申请号：EP82100451

申请日：1982-01-22

Applicant: SUMITOMO ELECTRIC INDUSTRIES LIMITED

Inventor： Yokota, Minoru Osaka Works of Sumitomo ,  Murakami, Katzuhito Osaka Works of Sumitomo ,  Takahashi, Kenichi Osaka Works of Sumitomo

IPC: C30B33/00 ,  C30B29/12 ,  G02B05/16

CPC classification number: G02B6/102 ,  C03B37/023 ,  C03B2201/84 ,  C03C13/008 ,  C30B29/12 ,  C30B33/00

Abstract: A process is disclosed for producing an infra-red light transmitting optical fiber by drawing a rod of single crystal or polycrystalline metal halide into a fiber through a die; also disclosed is a process for producing an infrared light transmitting optical fiber of step-index type by forming around a single crystal or polycrystalline fiber core, an intimate cladding crystal layer having a lower refractive index than the core by working in the temperature range that does not cause recrystallization of the core or cladding during working.

公开(公告)号：EP0048674A3

公开(公告)日：1982-06-09

申请号：EP81401466

申请日：1981-09-22

Applicant: SCHLUMBERGER LIMITED ,  SOCIETE DE PROSPECTION ELECTRIQUE SCHLUMBERGER

Inventor： Anderson, Ronald Alvin ,  Shapiro, Robert Marvin

IPC: G02B05/16

CPC classification number: G02B6/4415 ,  G02B6/4413 ,  G02B6/443

Abstract: A cable adapted for well logging has an optical fiber core in which the optical fibers are protected from moisture and non-uniform stresses by first wrapping the fibers in a helical spiral around a solid, soft, deformable core material and then blanketing them with more of the same. Next the blanketed core is closely and tightly wound with several overlapping layers of a metallic tape jacket. The jacket buffers radial loads applied by other portions of the cable and forms a barrier against moisture penetration. The soft core and blanket have properties close to a liquid so that only uniform, essentially hydrostatic stresses are transmitted to the optical fibers.

公开(公告)号：EP0034353A3

公开(公告)日：1981-11-25

申请号：EP81101032

申请日：1981-02-13

Applicant: Siemens Aktiengesellschaft

Inventor： Oestreich, Ulrich, Dipl.-Ing.

IPC: H01B13/02 ,  G02B05/16

CPC classification number: G02B6/449 ,  H01B13/025

公开(公告)号：EP0032761A3

公开(公告)日：1981-08-05

申请号：EP81200019

申请日：1981-01-12

Applicant: N.V. Philips' Gloeilampenfabrieken

Inventor： Franken, Adrianus Jacobus Jozef

IPC: G02B05/16

CPC classification number: G02B6/4479 ,  G02B6/4403 ,  G02B6/441 ,  Y10T29/5185 ,  Y10T156/1013

Abstract: An optical communication element assembled from an optical fibre bonded in a state of axial compressive stress to a metal tape. The tape may be folded-up into a tube and sealed by soldering. Such elements are strong and not sensitive to stress corrosion. Such an optical communication element may be produced by passing a metal tape and an optical fibre in contact around a drum with the optical fibre on the outside. An adhesive, which solidifies or cures during the passage around the drum is applied to the metal tape. The method is further explained by reference to Fig. 3.