GB2124793A - Fibre optic connector - Google Patents

Fibre optic connector Download PDF

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Publication number
GB2124793A
GB2124793A GB08221483A GB8221483A GB2124793A GB 2124793 A GB2124793 A GB 2124793A GB 08221483 A GB08221483 A GB 08221483A GB 8221483 A GB8221483 A GB 8221483A GB 2124793 A GB2124793 A GB 2124793A
Authority
GB
United Kingdom
Prior art keywords
groove
fibre
connection
arrangement according
assembly
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
GB08221483A
Other versions
GB2124793B (en
Inventor
Ronald Chard
Donald Leonard Watson
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.)
TEC Electrical Components Ltd
Original Assignee
Thorn EMI Electrical Components 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
Application filed by Thorn EMI Electrical Components Ltd filed Critical Thorn EMI Electrical Components Ltd
Priority to GB08221483A priority Critical patent/GB2124793B/en
Priority to FR8311966A priority patent/FR2530829B1/en
Priority to DE19833326501 priority patent/DE3326501A1/en
Publication of GB2124793A publication Critical patent/GB2124793A/en
Application granted granted Critical
Publication of GB2124793B publication Critical patent/GB2124793B/en
Expired legal-status Critical Current

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
    • G02B6/24—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
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3847—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces
    • G02B6/3849—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces using mechanical protective elements, e.g. caps, hoods, sealing membranes
    • 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
    • G02B6/3809—Dismountable connectors, i.e. comprising plugs without a ferrule embedding the fibre end, i.e. with bare fibre end
    • 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
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
    • G02B6/3821—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with axial spring biasing or loading means
    • 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
    • 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
    • G02B6/3878—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules comprising a plurality of ferrules, branching and break-out means
    • 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
    • G02B6/3881—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using grooves to align ferrule ends
    • 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
    • G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
    • G02B6/3888—Protection from over-extension or over-compression
    • 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
    • G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
    • G02B6/38875—Protection from bending or twisting

Abstract

A fibre optic connector includes first and second connection members (1, 25) which are urged together in an axial direction for connection and an intermediate V- groove assembly, Each connection member is provided with a fibre retaining module (10, 11) and a tubular enclosure element (12) which is spring biased towards a first extreme position in which the end portion of a received fibre (3) is covered. The enclosure element (12) contacts the V-groove assembly when the connection is assembled and assumes a retracted position in which the end portion is exposed. The exposed end portions of both connectors are received in a V-shaped groove (19) and a resilient collar (38) biasses a unit (17) to urge the fibres received in the V groove assembly towards the apex of the groove to position them in end-to-end relationship. <IMAGE>

Description

SPECIFICATION Fibre optic connector This invention relates to connection arrangements suitable for fibre optics or the like.
Fibre optics are particularly useful in communication over long distances as a consequence of their inherently low signal loss.
Clearly a joint between adjacent fibres must eventually be required and it is important that the low signal loss characteristic is maintained. Suitable connection arrangements for a joint exist, however the spread in fibre optic usage necessitates simpler and more robust connection arrangements-not only for a single core but also multicore fibre optic cable.
The problem with such connection arrangements stems from a requirement to line up adjacent fibres very accurately, otherwise sig nal loss across the joint is increased; and tolerance for carelessness on the part of a user.
It is an object of this invention to provide a fibre optic connection arrangement substantially obviating the above-mentioned problems.
According to one aspect of the invention there is provided a fibre optic connection arrangement comprising axially mating first and second connection members and a Vgroove assembly provided therebetween, the assembly including at least one V-shaped groove for reception of a respective fibre and bias means adapted to urge a received fibre towards the apex of said at least one groove; each connection member including a fibre retaining module having at least one resiliently biassed enclosure element extending therefrom, the element being capable of receiving a respective fibre and assuming a first position surrounding the respective fibre or a second position whereby an end section of the respective fibre is exposed; mating of said first and second connection members in use causing said at least one element in both members to asume said second position, end sections of each said respective fibres being received in said at least one groove.
In a preferred embodiment the V-groove assembly is included with one of the connection members and additionally includes a dust cover resiliently held to cover the at least one groove, the other connection member including a resiliently biassed displacement element adapted to act on the dust cover to expose the at least one groove during mating of said first and second connection members.
For a better understanding of the present invention and to illustrate how the same may be carried into effect, reference will now be made by way of example only, to the accompanying drawings, in which: Figure 1 illustrates a cut-away view of a first connection member including a V-groove assembly.
Figure 2 illustrates a cut-away view of a second connection member.
Figure 3 illustrates an exploded section through the internal components of the first connection member.
Figure 4 illustrates an exploded section through the internal components of the second connection member.
Figures 5A and 5B illustrate side views of the V-groove assembly taken along the arrows A and B respectively shown on Fig. 3.
Referring to the drawings, a first connection member 1 forming part of a fibre optic connection arrangement is illustrated in Figs. 1 and 3. A fibre optic cable 2 comprises a number of optic fibres for example 3 and 4, which are enclosed within an outer protective covering. The cable 2 is fed through and held by a cable gland assembly 5 connected to a strain relief adaptor 6. The gland assembly includes a gland nut 7 which acts on a gland 8 to fix the cable firmly within the assembly.
A thrust cone 9 (Fig. 3) also locates the cable firmly with the adaptor 6 when the gland assembly and adaptor are assembled together.
Clearly the cable gland assembly can be flexible thereby protecting the cable exiting the connection member 1 from experiencing undue stress.
When the cable extends through the adaptor, the outer covering of the cable is removed to expose individual optic fibres. The fibres are then fed to a fibre retaining module comprising a grommet 10 and a tubular element carrier 11. The carrier includes a number of tubular enclosure elements 12, which are mounted in the carrier and extend a first predetermined distance outward from it. The elements locate with internal carrier springs 1 3 which bias the elements to extend to the above first predetermined distance. The carrier is also constructed to permit the elements to retract by a second predetermined distance D when pressure is applied axially along the.
elements. To maintain the fibre fixed relative to the movement of the elements a locking gland 14 is screwed into the carrier. The fibre inserted into the carrier is cut by cleaving when it extends beyond a respective element and the secondary covering is removed from the end section of fibre of length D, which is exposed when the above-mentioned pressure is applied to the element.
Immediately adjacent the hole is a V-groove assembly which is illustrated in Figs. 5A and 5B. It comprises a first disc 1 5 including a number of apertures 20 (Fig. 3) close to the periphery. The apertures are sized to receive the elements 1 2. A central disc 1 6 includes a number of grooves 1 9 cut in from the periphery, each groove having a V-shaped apex and thereby forming V-shaped grooves. A unit 1 7 locates in the groove, the unit having a rounded base. The unit is biassed towards the groove apex by means of a collar 38 a resilient material for example of metal which is located around the periphery of the disc 16.
Notches or indentations 1 8 in the collar act on the individual units to produce the bias towards the groove apex.
A further disc 21 includes bevelled edges and apertures 22 arranged around the periphery of the bevelled edge. The apertures are sized to receive elements 12' of a second connection member 25. When discs 15, 1 6 and 21 are fixed together the apertures 20 and 22 are arranged to both line up with the area just above the base of grooves 1 9. This assembly is fixed in a shell 23 and when the fibre retaining module of the first connector is fixed to the shell, the elements 1 2 locate firstly with apertures 20.When the module is completely fixed to the V-groove assembly the elements 1 2 are pressed into the module and the exposed end-sectiions of fibres 3 and 4 are inserted into the V-groove 1 9 where the units 1 7 act on the fibres to hold them firmly onto the apex of the grooves, the round base of the units preventing fibre damage. The amount of bare fibre inserted is arranged to be very slightly more than half the thickness of the disc 16.
A second connector 25 illustrated in Figs. 2 and 4 also included a fibre retaining module equivalent to that contained in connector 1.
Common components to both connectors are marked numerically the same, the second connector numerals including an apostrophe.
When connector 25 is mated with connector 1 the elements 12' are inserted into the apertures 22 of the V-groove assembly and are pressed back into the connector 25 fibre retaining module, the end section of fibre 3' is therefore inserted into V-groove 1 9 where again units 1 7 act on the fibre to hold it firmly onto the groove apex. The amount of bare fibre inserted is arranged to be very slightly more than half the thickness of the disc 16. Therefore, fibres 3 and 3' are brought firmly together and held precisely coincident as a consequence of the V-groove assembly and the fibre retaining module. Any excess fibre simply causes slight flexing of the fibre within the elements 1 2 and 12', which elements are sized to permit this.The two connectors may be locked together by a lock nut 24, and key-ways (not shown) in the shells 23 and 23' can ensure correct relative orientation of the connectors.
It will be apparent that the V-groove assembly may be a separate section inserted into the first connector prior to mating of the two connectors. The second connector can also be either a fixed 'socket' as illustrated or a loose socket having a construction similar to the first connector.
The connector 25 has a distinct advantage when acting as a fixed socket in that on disconnection from connector 1 the elements 12' are biassed back to surround the optic fibres thereby protecting them from damage, any dirt on the fibre end can be easily wiped away. This is only true of the connector 1 if it includes a separate V-groove assembly. Where the assembly is an integral part of the connector means to prevent entry of dirt into apertures 22 is required.
A dust cover 26 is connected to a central rod 27 passing through a central apertures 28 in the disc 16. The rod length is chosen such that when a washer 29, located on the end of the rod, contacts the disc 1 6 the dust cover completely seals the apertures 22. It will be apparent that the cover may be constructed from a resilient material for example rubber.
The cover is biassed to this state by a spring 30 so that the apertures 22 are only exposed when pressure is applied to the central region of the dust cover. Consequently the apertures of the first connection member are protected against ingression of dirt as a result of carelessness by a user. During mating of the first and second member the dust cover must be arranged to allow the apertures 22 to be exposed thereby permitting entry thereto by the elements 12'. Therefore the second connector includes a rod element 27', which strikes the dust cover centrally on initial mating displacing the cover thereby exposing the apertures 22. During the rest of the mating the rod 27' is retracted into the second connector fibre retaining module.When the connectors are disconnected the rod 27' is biassed towards the dust cover by a spring 30' to ensure that the dust cover remains clear of the apertures 22 until the elements 12' are fully removed therefrom. Consequently spring 30' is stronger than spring 30.
A fibre optic connection arrangement is therefore provided, which allows a simple connection to be made; the accurate alignment of the fibres resulting in a low signal loss joint, typically below 5 dB. The arrangement also provides protection for the fibres from careless use, either with single or multi-core fibre optic cable, and can eliminate any requirement for adhesives.
It will be apparent that the embodiment illustrated shows an application of the invention in one form only for the purpose of illustration. For example the enclosure ele ments do not have to be tubular and alignment apertures 22 and 22' are not essential. In addition, the connectors 1 and 25 and the V-groove assembly can comprise any suitable material, for example plastics material. The connection arrangement of the invention is also not restricted to circular con nectors or to the bias and fixing means illustrated. Therefore, in practice the invention may be applied to many different configurations, the detailed embodiments being straightforward for those skilled in the art to implement.

Claims (7)

1. A fibre optic connection arrangement comprising axially mating first and second connection members and a V-groove assembly provided therebetween, the assembly including at least one V-shaped groove for reception of a respective fibre and bias means adapted to urge a received fibre towards the apex of said at least one groove; each connection member including a fibre retaining module having at least one resiliently biassed enclosure element extending therefrom, the element being capable of receiving a respective fibre and assuming a first position surrounding the respective fibre or a second position whereby an end section of the respective fibre is exposed; mating of said first and second connection members in use causing said at least one element in each member to assume said second position, end sections of each of said respective fibres being received in said at least one groove.
2. An arrangement according to Claim 1 wherein the first connection member includes the V-groove assembly.
3. An arrangement according to Claim 2 wherein the groove assembly includes a cover, resiliently held to substantially cover said at least one groove, the second connection member including a resiliently biassed displacement element adapted to act on the cover and expose said at least one groove before complete mating of said first and second connection members.
4. An arrangement according to any one of Claims 1, 2 or 3, wherein the connection members include reciprocating keyways to define the relative axial orientation of said members during mating.
5. An arrangement according to any preceding claim wherein said bias means comprises a resilient collar encircling said assembly adapted to act on units within said at least one V-shaped groove and arranged to bias said unit towards the apex thereof.
6. An arrangement according to any preceding claim wherein the V-groove assembly includes guide apertures arranged to guide said enclosure elements towards respective Vshaped grooves before said elements assume said second position.
7. An arrangement substantially as described with reference to and as illustrated in the accompanying drawings.
7. An arrangement substantially as described with reference to and as illustrated in the accompanying drawings.
CLAIMS (10Jun1983)
1. A fibre optic connection arrangement comprising first and second connection members which can be urged together axially for connection and are arranged to receive, and when connected retain in substantial alignment, respective fibres and a V-groove assembly located between said first and second members, wherein each connection member is provided with an enclosure element which is biassed resiliently towards an extreme position covering an end portion of the respective fibre and, as a result of said members being connected, contacts said V-groove assembly and is urged into a retracted position in which said end portion is exposed, the V-groove assembly is provided with a groove, generally of V-shape, to receive the exposed end portions of the fibres and bias means is provided to urge the end portions towards the apex of said groove whereby the fibres are positioned substantially in end-to-end relationship.
2. An arrangement according to Claim 1 wherein said V-groove assembly is mounted on one of said connection members prior to connection with the other of said connection members.
3. An arrangement according to Claim 2 wherein said V-groove assembly includes a cover, arranged to block access to said groove and said other connection member includes means adapted to displace the cover as the connection members are urged together to permit entry into the groove of the exposed end portion of a fibre retained in said other connection member.
4. An arrangement according to Claims 1, 2 or 3 wherein the connection members include reciprocating keyways to define the relative axial orientation of said connection members as they are urged together.
5. An arrangement according to any preceding claim wherein said bias means comprises a resilient collar encircling said assembly and being adapted to act on a unit within said V-shaped groove and arranged to bias said unit towards the apex thereof.
6. An arrangement according to any preceding claim wherein the V-groove assembly includes guide apertures arranged to guide said enclosure elements towards respective Vshaped grooves before said elements assume said retracted position.
GB08221483A 1982-07-24 1982-07-24 Fibre optic connector Expired GB2124793B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB08221483A GB2124793B (en) 1982-07-24 1982-07-24 Fibre optic connector
FR8311966A FR2530829B1 (en) 1982-07-24 1983-07-20 OPTICAL FIBER CONNECTOR
DE19833326501 DE3326501A1 (en) 1982-07-24 1983-07-20 FIBER OPTICAL CONNECTION ARRANGEMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08221483A GB2124793B (en) 1982-07-24 1982-07-24 Fibre optic connector

Publications (2)

Publication Number Publication Date
GB2124793A true GB2124793A (en) 1984-02-22
GB2124793B GB2124793B (en) 1985-10-23

Family

ID=10531898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08221483A Expired GB2124793B (en) 1982-07-24 1982-07-24 Fibre optic connector

Country Status (3)

Country Link
DE (1) DE3326501A1 (en)
FR (1) FR2530829B1 (en)
GB (1) GB2124793B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657340A (en) * 1983-12-27 1987-04-14 E. I. Du Pont De Nemours And Company Terminal device for optical fibers
US4787706A (en) * 1987-02-03 1988-11-29 American Telephone And Telegraph Company, At&T Bell Laboratories Duplex optical fiber connector
GB2238884A (en) * 1989-12-07 1991-06-12 Alcatel Nv Optical fibre cable connection having plastics discs
US5283848A (en) * 1992-12-23 1994-02-01 The Whitaker Corporation Circular multi-fiber fiber-optic connector
WO2003021322A2 (en) * 2001-08-31 2003-03-13 Teradyne, Inc. Waferized fiber optic connector
EP1530068A2 (en) * 2001-08-31 2005-05-11 Teradyne, Inc. Flat fiber optic connector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588387B1 (en) * 1985-10-04 1988-11-18 Socapex HERMAPHRODITE CONNECTOR ELEMENT FOR OPTICAL FIBERS
DE102004042142A1 (en) * 2004-08-31 2006-03-16 Telegärtner Gerätebau GmbH Fiber optic connector for information processing and transmission, has protection component enclosing and overlapping plugging component and arranged such that it releases ferrule end of plugging component with establishment of connection

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GB1473468A (en) * 1974-07-17 1977-05-11 Hitachi Ltd Optical fibre connectors
GB2004664A (en) * 1977-09-19 1979-04-04 Du Pont Connector for optic fibres
GB2016164A (en) * 1978-03-01 1979-09-19 Philips Nv Plug and socket connector for optical fibres
GB2022284A (en) * 1978-06-05 1979-12-12 Northern Telecom Ltd Optical fibre connector
EP0008329A1 (en) * 1978-08-21 1980-03-05 International Business Machines Corporation Device for connecting optical fibres
WO1980000619A1 (en) * 1978-09-01 1980-04-03 Gte Sylvania Inc Optical fiber connector
GB1571942A (en) * 1977-03-24 1980-07-23 Cannon Electric Great Britain Fibre optic connector
GB2054893A (en) * 1979-07-26 1981-02-18 Itt Fibre optic connector
GB2062283A (en) * 1979-11-05 1981-05-20 Itt Fibre optic connector
GB1596604A (en) * 1977-02-23 1981-08-26 Socapex Optical monofibre connector
GB2084344A (en) * 1980-09-12 1982-04-07 Bendix Corp Connecting arrangement for a pair of optical fibers

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DE2527008C3 (en) * 1975-06-18 1981-04-02 Siemens AG, 1000 Berlin und 8000 München Multiple connector for single fiber optic cables
DE2622607C3 (en) * 1976-05-20 1981-09-03 Siemens AG, 1000 Berlin und 8000 München Self-centering connector arrangement for fiber optic cables
US4253730A (en) * 1977-11-17 1981-03-03 Thomas & Betts Corporation Optical fiber connector
US4182546A (en) * 1978-02-21 1980-01-08 Northern Telecom Limited Multiple connector for optical fibres
DE2845420C2 (en) * 1978-10-18 1984-11-08 Bunker Ramo Corp., Oak Brook, Ill. Fiber optic plug connection
US4306766A (en) * 1979-08-31 1981-12-22 The Bendix Corporation Optical fiber terminals with V-groove alignment
US4378145A (en) * 1980-03-03 1983-03-29 Thomas & Betts Corporation Method and apparatus for joining optical elements

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1473468A (en) * 1974-07-17 1977-05-11 Hitachi Ltd Optical fibre connectors
GB1596604A (en) * 1977-02-23 1981-08-26 Socapex Optical monofibre connector
GB1571942A (en) * 1977-03-24 1980-07-23 Cannon Electric Great Britain Fibre optic connector
GB2004664A (en) * 1977-09-19 1979-04-04 Du Pont Connector for optic fibres
GB2016164A (en) * 1978-03-01 1979-09-19 Philips Nv Plug and socket connector for optical fibres
GB2022284A (en) * 1978-06-05 1979-12-12 Northern Telecom Ltd Optical fibre connector
EP0008329A1 (en) * 1978-08-21 1980-03-05 International Business Machines Corporation Device for connecting optical fibres
WO1980000619A1 (en) * 1978-09-01 1980-04-03 Gte Sylvania Inc Optical fiber connector
GB2054893A (en) * 1979-07-26 1981-02-18 Itt Fibre optic connector
GB2062283A (en) * 1979-11-05 1981-05-20 Itt Fibre optic connector
GB2084344A (en) * 1980-09-12 1982-04-07 Bendix Corp Connecting arrangement for a pair of optical fibers

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657340A (en) * 1983-12-27 1987-04-14 E. I. Du Pont De Nemours And Company Terminal device for optical fibers
AU572933B2 (en) * 1983-12-27 1988-05-19 E.I. Du Pont De Nemours And Company Terminal device for optical fibers
US4787706A (en) * 1987-02-03 1988-11-29 American Telephone And Telegraph Company, At&T Bell Laboratories Duplex optical fiber connector
GB2238884A (en) * 1989-12-07 1991-06-12 Alcatel Nv Optical fibre cable connection having plastics discs
GB2238884B (en) * 1989-12-07 1993-11-17 Alcatel Nv Optical fibre cable connection
US5283848A (en) * 1992-12-23 1994-02-01 The Whitaker Corporation Circular multi-fiber fiber-optic connector
WO2003021322A2 (en) * 2001-08-31 2003-03-13 Teradyne, Inc. Waferized fiber optic connector
WO2003021322A3 (en) * 2001-08-31 2004-01-08 Teradyne Inc Waferized fiber optic connector
US6769814B2 (en) 2001-08-31 2004-08-03 Teradyne, Inc. Waferized fiber optic connector
EP1530068A2 (en) * 2001-08-31 2005-05-11 Teradyne, Inc. Flat fiber optic connector
EP1530068A3 (en) * 2001-08-31 2005-11-30 Teradyne, Inc. Flat fiber optic connector

Also Published As

Publication number Publication date
FR2530829A1 (en) 1984-01-27
GB2124793B (en) 1985-10-23
FR2530829B1 (en) 1987-07-31
DE3326501C2 (en) 1990-01-18
DE3326501A1 (en) 1984-01-26

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