GB2030314A - Connector for optical fibres - Google Patents

Connector for optical fibres Download PDF

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Publication number
GB2030314A
GB2030314A GB7926553A GB7926553A GB2030314A GB 2030314 A GB2030314 A GB 2030314A GB 7926553 A GB7926553 A GB 7926553A GB 7926553 A GB7926553 A GB 7926553A GB 2030314 A GB2030314 A GB 2030314A
Authority
GB
United Kingdom
Prior art keywords
endpiece
connector
biconical
fibre
optical fibres
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
GB7926553A
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GB2030314B (en
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EDITIONS FILMEES
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EDITIONS FILMEES
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Filing date
Publication date
Application filed by EDITIONS FILMEES filed Critical EDITIONS FILMEES
Publication of GB2030314A publication Critical patent/GB2030314A/en
Application granted granted Critical
Publication of GB2030314B publication Critical patent/GB2030314B/en
Expired legal-status Critical Current

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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
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3874—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3869—Mounting ferrules to connector body, i.e. plugs

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

In said connector, the two fibres 1 to be joined are provided at their ends with a truncated cone-shaped endpiece 2 made of ruby which is encased with clearance in a holding member 3, and the said two endpieces penetrate in a biconical sleeve 4 made of ruby and are held in a connection piece 5. <IMAGE>

Description

SPECIFICATION Connector for optical fibres The object of the invention is to join, end to end, two optical fibres with as perfect an axial and radial alignment as possible, without entailing a very accurate production of the mechanical parts of the connector.
A connector for optical fibres is already known which comprises a male cone-shaped part provided with an axial passage through which is threaded the fibre and in which said latter is positioned and finished.
Each end of the fibres which constitutes a cable having been prepared this way, they are then connected to one another by a biconical part having the same low conicity as the ends.
With an appropriate threading provided in the mechanical portion it is possible to make the ends of the cables and the biconical part integral, which also enables, if necessary, a slight rotation of one cable end in the said biconical part, in order to readjust any non-alignment due to possible production defects.
The invention uses this kind of connector, but allows an axial as well as an angular positioning.
It is thus the object of the invention to propose a connector of optical fibres wherein each fibre is provided at its end with a truncated cone-shaped endpiece which fits into a biconical sleeve mounted iri a connection member, wherein the said endpiece is set with some clearance in a holding member which is housed and secured in said connection member.
Other characteristics of the invention will become evident from the following description, given by way of example only and nonrestrictively, reference being made to the accompanying drawing.
The only figure shown in said drawing is an axial cross-section of the connector according to the invention.
As illustrated in the said drawing, the connector according to the invention comprises two optical fibres 1 , the end of each one of which is provided with a truncated cone-shaped endpiece made of ruby, which is encased with a clearance in a holding member 3.
The fibre crosses through the said endpiece 2 axially, and the end portion of said endpiece.
Said endpiece 2 is crossed axially by the fibre and its end portion which is flush with said fibre is rectified, levelled up and polished.
The encasing of the endpiece in the member 3 is produced by a groove 2a provided on the periphery of the endpiece and cooperating with an annular projection 3a of the said member 3.
Upon connection, the two endpieces come into position in a biconical sleeve 4 made of ruby which is held in a connection member 5 which latter receives the endpiece holding members 3.
Said members can be screwed in the connection member 5 or be secured therein by means of a ring screwed on said member 5.
The sleeve 4 whose conicity and concentricity are perfect, is used to align axially the endpiece 2 however small the offset of the members 3.
The clearance willfully left when the ruby 2 is encased in the member 3, allows a slight axial and angular movement of the ruby authorizing the perfect alignment of the fibres 1 when the endpieces penetrate the biconical connection member 5.
The invention is not limited to the embodiment shown or described hereinabove and various modifications may be made thereto without departing from its scope.
1. A connector of optical fibres in which each fibre is provided at its end with a truncated coneshaped end-piece which fits in biconical sleeve mounted in a connection member, wherein the said endpiece is encased with clearance in a holding member which is housed and secured in the said connection member.
2. A connector as claimed in claim 1 , wherein the encasing device consists in a groove provided on the endpiece or on the holding member, and which cooperates with an annular projection on the holding member or on the endpiece.
3. A connector as claimed in claim 1 or 2, wherein the endpieces and the biconical sleeve are made of ruby, the point of the endpiece which is flush with the fibre being levelled up and polished.
4. A connector for optical fibres, substantially as hereinbefore described with reference to, and as illustrated in the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (4)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Connector for optical fibres The object of the invention is to join, end to end, two optical fibres with as perfect an axial and radial alignment as possible, without entailing a very accurate production of the mechanical parts of the connector. A connector for optical fibres is already known which comprises a male cone-shaped part provided with an axial passage through which is threaded the fibre and in which said latter is positioned and finished. Each end of the fibres which constitutes a cable having been prepared this way, they are then connected to one another by a biconical part having the same low conicity as the ends. With an appropriate threading provided in the mechanical portion it is possible to make the ends of the cables and the biconical part integral, which also enables, if necessary, a slight rotation of one cable end in the said biconical part, in order to readjust any non-alignment due to possible production defects. The invention uses this kind of connector, but allows an axial as well as an angular positioning. It is thus the object of the invention to propose a connector of optical fibres wherein each fibre is provided at its end with a truncated cone-shaped endpiece which fits into a biconical sleeve mounted iri a connection member, wherein the said endpiece is set with some clearance in a holding member which is housed and secured in said connection member. Other characteristics of the invention will become evident from the following description, given by way of example only and nonrestrictively, reference being made to the accompanying drawing. The only figure shown in said drawing is an axial cross-section of the connector according to the invention. As illustrated in the said drawing, the connector according to the invention comprises two optical fibres 1 , the end of each one of which is provided with a truncated cone-shaped endpiece made of ruby, which is encased with a clearance in a holding member 3. The fibre crosses through the said endpiece 2 axially, and the end portion of said endpiece. Said endpiece 2 is crossed axially by the fibre and its end portion which is flush with said fibre is rectified, levelled up and polished. The encasing of the endpiece in the member 3 is produced by a groove 2a provided on the periphery of the endpiece and cooperating with an annular projection 3a of the said member 3. Upon connection, the two endpieces come into position in a biconical sleeve 4 made of ruby which is held in a connection member 5 which latter receives the endpiece holding members 3. Said members can be screwed in the connection member 5 or be secured therein by means of a ring screwed on said member 5. The sleeve 4 whose conicity and concentricity are perfect, is used to align axially the endpiece 2 however small the offset of the members 3. The clearance willfully left when the ruby 2 is encased in the member 3, allows a slight axial and angular movement of the ruby authorizing the perfect alignment of the fibres 1 when the endpieces penetrate the biconical connection member 5. The invention is not limited to the embodiment shown or described hereinabove and various modifications may be made thereto without departing from its scope. CLAIMS
1. A connector of optical fibres in which each fibre is provided at its end with a truncated coneshaped end-piece which fits in biconical sleeve mounted in a connection member, wherein the said endpiece is encased with clearance in a holding member which is housed and secured in the said connection member.
2. A connector as claimed in claim 1 , wherein the encasing device consists in a groove provided on the endpiece or on the holding member, and which cooperates with an annular projection on the holding member or on the endpiece.
3. A connector as claimed in claim 1 or 2, wherein the endpieces and the biconical sleeve are made of ruby, the point of the endpiece which is flush with the fibre being levelled up and polished.
4. A connector for optical fibres, substantially as hereinbefore described with reference to, and as illustrated in the accompanying drawing.
GB7926553A 1978-08-31 1979-07-31 Connector for optical fibres Expired GB2030314B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7825217A FR2435056A1 (en) 1978-08-31 1978-08-31 CONNECTION CONNECTOR FOR FIBER OPTICS

Publications (2)

Publication Number Publication Date
GB2030314A true GB2030314A (en) 1980-04-02
GB2030314B GB2030314B (en) 1982-11-24

Family

ID=9212255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7926553A Expired GB2030314B (en) 1978-08-31 1979-07-31 Connector for optical fibres

Country Status (4)

Country Link
JP (1) JPS5535392A (en)
DE (1) DE2933033A1 (en)
FR (1) FR2435056A1 (en)
GB (1) GB2030314B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072773A2 (en) * 1981-08-14 1983-02-23 Automatic Connector, Inc. Fiber optic connector with separable alignment nose
FR2517836A1 (en) * 1981-12-03 1983-06-10 Augat Inc FIBER OPTIC CONNECTOR AND METHOD FOR MANUFACTURING THE SAME
DE3210127A1 (en) * 1981-03-20 1984-04-26 Allied Corp., Morris Township, N.J. Connector for optical fibres
EP0156361A2 (en) * 1984-03-26 1985-10-02 Sumitomo Electric Industries Limited Device for clamping end portion of optical fiber
WO1987001464A1 (en) * 1985-08-29 1987-03-12 Amp Incorporated Ferrule member for terminating fiber optic transmission member
EP0762166A1 (en) * 1995-08-31 1997-03-12 Kyocera Corporation Ferrule for optical fiber and optical connector using this

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8005871L (en) * 1980-08-21 1982-02-22 Rune Lidholt CENTERING PIECE FOR A PRECISION CONNECTOR FOR OPTICAL FIBERS
JPS6126009A (en) * 1984-07-16 1986-02-05 Nippon Telegr & Teleph Corp <Ntt> Fiber terminating part with lens

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT325326B (en) * 1972-07-10 1975-10-10 Siemens Ag CONNECTING PLUG FOR OPTICAL FIBERS AND METHOD FOR ESTABLISHING FIXED CONNECTIONS USING A CONNECTING PLUG
FR2325262A1 (en) * 1974-01-11 1977-04-15 Thomson Brandt PROCESS FOR ENTERING TELEVISION SIGNALS ON AN INFORMATION AND RECORDING MEDIA OBTAINED BY LEDIT PROCEDE
FR2273289A1 (en) * 1974-05-30 1975-12-26 Fort Francois Connector for optical fibres - has bored components with conical male and female coupling ends
GB1481290A (en) * 1975-05-09 1977-07-27 Int Standard Electric Corp Coupler for optical fibres
FR2328667A1 (en) * 1975-10-22 1977-05-20 Cit Alcatel OPTICAL FIBER CONNECTION PROCESS
US4097129A (en) * 1976-05-25 1978-06-27 Gte Laboratories Incorporated Coupling device for protectively jacketed fibers
GB1501680A (en) * 1976-10-06 1978-02-22 Post Office Dielectric optical waveguide joints
GB1556505A (en) * 1976-11-10 1979-11-28 Standard Telephones Cables Ltd Joing optical fibres
US4087158A (en) * 1976-12-06 1978-05-02 The United States Of America As Represented By The Secretary Of The Navy Low-loss single filament fiber optic connector with three concentric tapered members for each filaments

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210127A1 (en) * 1981-03-20 1984-04-26 Allied Corp., Morris Township, N.J. Connector for optical fibres
EP0072773A2 (en) * 1981-08-14 1983-02-23 Automatic Connector, Inc. Fiber optic connector with separable alignment nose
EP0072773A3 (en) * 1981-08-14 1983-06-29 Automatic Connector, Inc. Fiber optic connector with separable alignment nose
FR2517836A1 (en) * 1981-12-03 1983-06-10 Augat Inc FIBER OPTIC CONNECTOR AND METHOD FOR MANUFACTURING THE SAME
EP0156361A2 (en) * 1984-03-26 1985-10-02 Sumitomo Electric Industries Limited Device for clamping end portion of optical fiber
EP0156361A3 (en) * 1984-03-26 1987-08-12 Sumitomo Electric Industries Limited Device for clamping end portion of optical fiber
US4735482A (en) * 1984-03-26 1988-04-05 Sumitomo Electric Industries, Ltd. Device for clamping end portion of optical fiber
WO1987001464A1 (en) * 1985-08-29 1987-03-12 Amp Incorporated Ferrule member for terminating fiber optic transmission member
EP0762166A1 (en) * 1995-08-31 1997-03-12 Kyocera Corporation Ferrule for optical fiber and optical connector using this

Also Published As

Publication number Publication date
JPS5535392A (en) 1980-03-12
GB2030314B (en) 1982-11-24
FR2435056A1 (en) 1980-03-28
DE2933033A1 (en) 1980-03-13
FR2435056B1 (en) 1981-03-06

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PCNP Patent ceased through non-payment of renewal fee