公开(公告)号：EP0084003A3

公开(公告)日：1983-08-17

申请号：EP83400018

申请日：1983-01-04

Applicant: THOMSON-CSF

Inventor： Duda, Eugène ,  De Decker, Roger ,  Tondu, Claude

IPC: H01S03/13 ,  H01S03/02 ,  G02B05/14

CPC classification number: H01S5/02248 ,  H01S5/005 ,  H01S5/0683

Abstract: La puissance optique utile d'un laser (C) semi conducteur sort par sa face avant (f₁). La puissance de contrôle sort de la face arrière (f₂) et entre dans un guide optique (G), formé par l'assemblage de deux pièces (22, 23). La lumière guidée tombe sur le photodétecteur de contrôle (5). Le courant détecté commande la puissance électrique de commande (4) du laser (C).
Application à la stabilisation d'un laser de lecture d'un disque optique.

公开(公告)号：EP0047669A3

公开(公告)日：1982-04-07

申请号：EP81304109

申请日：1981-09-08

Applicant: BICC Limited

Inventor： Sadler, Alan Arthur ,  Culshaw, Brian ,  Ball, Peter Raymond ,  Pond, John Charles

IPC: H04B09/00 ,  G02B05/14

CPC classification number: H04B10/00

Abstract: A simple two-way communication link by means of which data signals from a number of data inputs 17 at spaced positions along a highway 11 can be fed in individually in any desired sequence comprises a highway 11 constituted by an optical fibre; a gas laser 13 or other source of electromagnetic radiation of optical frequency at the end of the highway; a number of outstations 17 at spaced positions along the highway, each of which outstations comprises a modulator 18 for modulating a data signal onto a subcarrier which periodically varies the optical path lenght of a section of the highway with the modulated data signal, and has an associated receiver 20 for signals for controlling operation of the modulator; and, connected to the other end of the highway, a demodulator 16 and transmitter 21 for transmitting control signals to the receivers 20. Preferably the transmitter 21 and the receivers 20 are electrically interconnected by a pair of electric conductors constituting a leaky electric cable 12.

公开(公告)号：EP0038982A3

公开(公告)日：1981-12-23

申请号：EP81102783

申请日：1981-04-10

Applicant: Western Electric Company, Incorporated

Inventor： Fleming, James William Jr. ,  MacChesney, John Burnette ,  O'Connor, Paul Bernard

IPC: C03B37/025 ,  G02B05/14

CPC classification number: C23C16/517 ,  C03B37/0183 ,  Y02P40/57

Abstract: Optical fiber preforms are produced by means of a duplex hot zone, a section of which is defined by an r.f. generated plasma fire ball. The process operates within a tube with gaseous precursor material reacting within the hot zone to result in deposited material of the desired preform glass composition. A "smoothing" region within the hot zone is defined by tube surface at a temperature sufficiently elevated to consolidate any particulate material resulting from reaction. In some aspects, the disclosed procedures may be regarded as Modified Chemical Vapor Deposition. Commercial significance resides in significantly increased throughput of preforms and, consequently, in fiber.

公开(公告)号：EP0005683A3

公开(公告)日：1979-12-12

申请号：EP79810041

申请日：1979-05-23

Applicant: BATTELLE MEMORIAL INSTITUTE

Inventor： Gross, Daniel

IPC: G02B05/14

CPC classification number: G02B6/4219 ,  G02B6/245 ,  G02B6/25 ,  G02B6/32 ,  G02B6/4203 ,  Y10S359/90

公开(公告)号：EP0001117A3

公开(公告)日：1979-04-04

申请号：EP78100837

申请日：1978-09-07

Applicant: LES CABLES DE LYON Société anonyme dite:

Inventor： Mignien, Georges ,  Millet, Christian

IPC: G02B05/14 ,  G02B07/00

CPC classification number: G02B6/3893 ,  G02B6/3821 ,  G02B6/3841 ,  G02B6/3878 ,  G02B6/3881

公开(公告)号：WO1984003776A1

公开(公告)日：1984-09-27

申请号：PCT/SE1984000078

申请日：1984-03-06

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON ,  VACHA, Lubos

Inventor： TELEFONAKTIEBOLAGET L M ERICSSON

IPC: G02B05/14

CPC classification number: C03C25/105 ,  C03C13/046 ,  G02B6/02033

Abstract: An optical fibre with a core of glass and a cladding of plastics. In accordance with the invention, the glass is a sodium borosilicate glass containing refractive index-raising oxides, while the plastics is an optically low-attenuation plastics with a low refrective index, whereby a high numerical aperture is obtained in the optical fibre.

Abstract translation: 具有玻璃芯和塑料包层的光纤。 根据本发明，玻璃是含有折射率升高氧化物的硼硅酸钠玻璃，而塑料是具有低反射指数的光学低衰减塑料，由此在光纤中获得高数值孔径。

公开(公告)号：WO1984001227A1

公开(公告)日：1984-03-29

申请号：PCT/US1983001245

申请日：1983-08-15

Applicant: WESTERN ELECTRIC COMPANY, INC.

Inventor： WESTERN ELECTRIC COMPANY, INC. ,  KASSAHUN, Bahiru ,  VIRIYAYUTHAKORN, Montri

IPC: G02B05/14

CPC classification number: C03C25/18

Abstract: A coating material is applied to drawn lightguide fiber in a manner which substantially prevents the inclusion of bubbles and which causes the fiber to be disposed substantially concentrically within the coating layer. The lightguide fiber (21) is advanced through a continuum of coating material (80), which extends from a free surface of a reservoir and through two dies that are arranged in tandem, at a velocity which causes air to be entrained in the coating material. A pressure gradient is established between portions of the first die adjacent to its exit orifice. A first one of the dies communicates with the reservoir and the second die and further communicates at the interface of the dies with a pressurized supply of the coating material. The pressurized flow sufficiently enhances the pressure gradient in the first die and establishes sufficient volumetric flow of coating material upwardly through the first die to cause any bubbles in the coating material on the advancing fiber to be removed by recirculating streamlines and to be moved upwardly into the reservoir. The bubbles are substantially immediately from the reservoir by providing fluid exit channels through which bubble entrained coating material exits the reservoir in the vicinity adjacent the first die. Not only is the coating in the fiber substantially free of entrained air as it leaves the second die, but coalescing bubbles do not misalign the fiber and the fiber is disposed concentrically within the coating because of a precentering effect of the first die and enhanced self-centering caused by pressure in the chamber.

公开(公告)号：WO1983000232A1

公开(公告)日：1983-01-20

申请号：PCT/GB1982000200

申请日：1982-07-07

Applicant: CENTRAL ELECTRICITY GENERATING BOARD ,  PAYNE, David, Neil ,  MANSFIELD, Robert, James ,  RAMSKOV-HANSEN, Jens, Jorn ,  HADLEY, Maxwell, Richard ,  BARLOW, Arthur, John

Inventor： CENTRAL ELECTRICITY GENERATING BOARD

IPC: G02B05/14

CPC classification number: G02B6/105 ,  C03B37/02745 ,  C03B2203/06 ,  C03B2203/36 ,  C03B2205/06

Abstract: Une fibre optique telle que l'on pourrait utiliser pour la transmission de données ou en tant que détecteur, se compose d'un matériau sensiblement exempt de torsion qui est retordu pendant l'étirage de manière à présenter un taux de torsion par unité de longueur supérieur à la biréfringence intrinsèque. Le matériau est exempt de torsion évitant ainsi les efforts de torsion qui produisent une biréfringence circulaire mais l'enroulement établit une moyenne entre la biréfringence linéaire induite par l'effort et la biréfringence due à la forme. L'enroulement assure ainsi la réduction de la dispersion en mode de polarisation résiduelle à une valeur négligeable. La figure 1 illustre une technique de production de ces fibres, dans laquelle une ébauche (10) introduite dans un four d'étirage (13) est enroulée par un moteur (11) pour conférer la torsion nécessaire à la fibre (15).

公开(公告)号：WO1982000720A1

公开(公告)日：1982-03-04

申请号：PCT/SE1981000233

申请日：1981-08-21

Applicant: LIDHOLT L

IPC: G02B05/14

CPC classification number: G02B6/3841 ,  G02B6/3833 ,  G02B6/3835 ,  G02B6/3861 ,  G02B6/3863

Abstract: Centering piece for centering an optical fibre (20) in a connector member (4). Said piece has an exterior conical surface (14) Said connector member is intended for assembly together with another connector member which has an interior cone into which it fits The centering piece has at a first end adaptor means (2, 3) to the connector member (4), and at another end there is a truncated exterior conical surface (14) at the outer end of which there is a circle (6) which defines an end plane (1), a through-hole (7) passing from end to end and means (8, 9, 10) arranged to center, at the center of said circle, an inserted end of an optical fibre. Said means can consist of a precision-centered hole which centres the fibres when cast in plastic. They can also be an outwardly open exterior cone, cooperating either with a centering body with a hole or with a plurality of centering bodies in the form of balls.

Abstract translation: 定心片用于将光纤（20）定心在连接器构件（4）中。 所述部件具有外圆锥形表面（14）。所述连接器构件旨在与具有内锥体的另一连接器构件一起组装在其中。定心件在第一端处具有连接器构件（2,3） （4），另一端在其外端处有一个截顶的外圆锥形表面（14），该圆锥形外表面有一个限定了一个端面（1）的圆（6），一个通孔（7） 并且在所述圆的中心处布置成在光纤的插入端处中心的装置（8,9,10）。 所述装置可以由在塑料中铸造时使纤维居中的以精密为中心的孔组成。 它们也可以是向外敞开的外锥体，与具有孔的定心体或与球的形式的多个定心体配合。

公开(公告)号：WO1980002328A1

公开(公告)日：1980-10-30

申请号：PCT/US1980000373

申请日：1980-04-07

Applicant: GTE PROD CORP

Inventor： GTE PROD CORP ,  GRIFFIN W ,  CARLSEN W ,  BENASUTTI J

IPC: G02B05/14

CPC classification number: G02B6/3803 ,  G02B6/3801 ,  G02B6/3838

Abstract: A splice for holding the ends of optical fibers (12, 14) in end to end relationship includes a pair of sections (19, 21) having mating planar surfaces in engagement. One of the surfaces has an axially aligned groove (24) facing the other surface to form an opening. The fiber receiving member comprises an elastomeric material of sufficient resilience to permit the opening to expandably receive optical fibers dimensioned larger than the opening. A sleeve (27) is mounted about the receiving member for holding the sections in assembled relationship.