EP1790045A2 - Plug connector having electric and optical contacts - Google Patents

Plug connector having electric and optical contacts

Info

Publication number
EP1790045A2
EP1790045A2 EP05787065A EP05787065A EP1790045A2 EP 1790045 A2 EP1790045 A2 EP 1790045A2 EP 05787065 A EP05787065 A EP 05787065A EP 05787065 A EP05787065 A EP 05787065A EP 1790045 A2 EP1790045 A2 EP 1790045A2
Authority
EP
European Patent Office
Prior art keywords
optical
optical contact
base
contact
base according
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.)
Withdrawn
Application number
EP05787065A
Other languages
German (de)
French (fr)
Inventor
Yves Sontag
Sylvain Lalanne
Eric Rauscent
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.)
Thales SA
Original Assignee
Thales SA
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 Thales SA filed Critical Thales SA
Publication of EP1790045A2 publication Critical patent/EP1790045A2/en
Withdrawn legal-status Critical Current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
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3817—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres containing optical and electrical conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB

Definitions

  • the field of the invention is that of connector bases for electronic card to ensure both the electrical and optical connection. These connectors are more specifically dedicated to aeronautical applications.
  • FIG. 1 To make this connector, the device shown in FIG. 1 is generally used.
  • a base 1 is mounted on a printed circuit board 4 also called PCB, the acronym for "Printed Board Circuit”.
  • This circuit comprises electronic components 5.
  • a plug 2 comprising both electrical and optical contacts provides the connection between the base and a connecting cable 27 comprising electrical cables 28 and optical fibers 29.
  • base 1 and plug 2 are presented separately for reasons of clarity.
  • This base 1 comprises a mechanical frame 10 comprising housings comprising electrical contacts 7 and optical 8.
  • This base 1 is maintained on the printed circuit 4 by mechanical means which also provide the electrical connection.
  • the means shown in Figure 1 are, for example, conductive columns 9. It is also fixed on the frame 3 of the computer.
  • the electrical connections with the electrical tracks of the circuit are made by means of conventional electrical contacts 7 also called pins, soldered on the circuit 4.
  • the optical contacts are of the fiber type, that is to say a fiber segment 8 is connected on the one hand to the base 1 and on the other hand to an optical output of a conversion optoelectronic module 6 ensuring the transduction of optical signals into electrical signals.
  • This module can be used either for transmitting or for receiving or for transmitting / receiving the optical signal. It is integral with the circuit 4.
  • the optical output of the conversion module may comprise either optical connectivity or a fiber segment directly connected to the internal optoelectronic devices for converting the module. It is said that the module is "pigtailised”.
  • the first solution that allows easy assembly and disassembly of the fiber is most often preferred to the second. It is used, in particular, with LC type optical connections.
  • the base according to the invention avoids the use of optical fibers connecting the base and the optoelectronic conversion modules while eliminating the disadvantages of the integration of optoelectronic conversion devices in the base.
  • the invention relates to a connector socket for an electronic card comprising a mechanical frame and at least one electrical contact, characterized in that it comprises at least one rigid optical contact placed in a housing of the mechanical frame.
  • the optical contact comprises an optical fiber segment mounted in a mechanical ferrule. It may also include an optical fiber segment mounted in two adjacent ferrules, said ferrules having a common axis of revolution, the optical fiber segment being centered on said axis of revolution.
  • the free ends of the two ferrules have different diameters.
  • the housing and the optical contact comprise mechanical means of damping ensuring a flexible maintenance of the optical contact in the frame, so that said contact can slide freely inside its housing in case of pressure exerted on the one of its ends and resume its initial position when the pressure ceases, said mechanical means are essentially a collar located on the optical contact and a spring located in the housing of the optical contact and surrounding the optical contact.
  • the base comprises at the end of an optical contact in contact with the plug an alignment sleeve, said sleeve for ensuring the optical connection blind.
  • the base can be mounted on an electronic card comprising at least one optoelectronic conversion module in which an optical contact of the base comes into play, said card being integrated in a computer or an optoelectronic device.
  • Figure 1 shows a connector base according to a first prior art
  • Figure 2 shows a connector base according to a second prior art
  • FIG. 3 shows a sectional view of a base according to the invention
  • FIG. 4 represents a detailed view of an example of an optical contact according to the invention
  • FIG. 5 represents a three-dimensional view of a base according to the invention.
  • FIG. 3 represents a sectional view of a base 1 according to the invention mounted on a printed circuit 4 comprising electronic components 5 and an optoelectronic conversion module 6.
  • This conversion module can operate as a receiver. It then converts the light signal into an electrical signal.
  • the conversion module can also operate as a transmitter. It then converts the electrical signal into a light signal.
  • These components are generally of the OSA type, the acronym for "Optical Sub Assembly”.
  • the component is a TOSA, acronym for "Transmitter Optical Sub Assembly”.
  • the emission is then ensured either by a laser diode or by a VCSEL, acronym for Vertical Cavity Surface Emitting Laser. ".
  • the component is a ROSA, acronym for "Receiver Optical Sub Assembly” and generally comprises a receiving photodiode and a transimpedance amplifier.
  • the base 1 essentially comprises: A frame 10;
  • At least one optical contact 1 is provided.
  • the optical contact 1 1 is plugged into the conversion module.
  • the conversion module In order for the connection to be successful without significant optical losses, the conversion module must be perfectly positioned on the printed circuit board. To achieve this positioning, a mounting template positioned on the circuit is used during the soldering of the connection pins of the module.
  • the base is purely passive and does not include active conversion components such as transmitters or photoelectric receivers. Thus, the base is independent of the parameters of the intended application such as the transmission rate, the transmission protocol, the direction of transmission, the optical wavelength ...
  • the base and the associated plug can comply with the standards in force for conventional electrical connectors.
  • FIG. 4 represents a detailed view of an example of an optical contact 11 according to the invention.
  • the optical contact essentially comprises a mechanical ferrule 12 comprising an optical fiber segment 13.
  • the ferrule is presented in a single mechanical part. Machining such a ferrule of large size can be complex and expensive.
  • the optical contact may also include an optical fiber segment mounted in two adjacent ferrules, said ferrules having a common axis of revolution, the optical fiber segment being centered on said axis of revolution.
  • the ferrules may be ceramic, zirconia which is a zirconium oxide or metal ..
  • the ends of the ferrule in contact with the conversion module have a diameter of 1.25 millimeters, compatible connectors type " LUXCIS ", marketed by RADIALL.
  • the extreme parts of the ferrule are not necessarily of the same diameter.
  • the first end of the ferrule in contact with the conversion module has a diameter of 1.25 millimeters, compatible connectors type "LC” and the second end of the ferrule which provides the connection with the plug has a diameter of 2.5 millimeters, compatible with "ELIO" optical contacts, marketed by SOURIAU.
  • the ferrule is placed in the housing 14. To ensure soft damping of the ferrule in its housing 14, it comprises a spring 15 and a stop 16.
  • the ferrule 12 has a flange 17.
  • the spring 15 is arranged around the ferrule in compression between the stop 16 and the collar 17. This arrangement ensures a very good optical contact between the ferrule and the conversion module 6.
  • the latter comprises a transmitter or a receiver 61.
  • the ferrule must include a braking system to prevent it from freely coming out of its housing when the base is not mounted on the circuit. However, this system must be sufficiently flexible so that the contacts of the plug can easily push the end ferrule into the connectors of the conversion module.
  • a piece 62 of foam or flexible plastic is placed around the module after mounting of the base. This avoids any introduction of liquid or dirt which would degrade the performance of the optical link.
  • the second end of the ferrule must comprise an alignment sleeve 19.
  • This sleeve is held in a mechanical part 18 integral with the base and which can be dismountable so as to easily clean the free end of the optical fiber segment 13 .
  • the optical connection base / plug can be provided by an optical contact having an optical ferrule 20 disposed in the plug 2.
  • This ferrule 20 surrounds an optical fiber 21 located in the extension of the optical fiber segment 13.
  • housing 22 of the optical contact also has a stop 24 which holds the ferrule in the housing and a damping spring 25.
  • the spring 25 surrounds the body of the ferrule and is disposed between the bottom of the housing and a flange 23 disposed on the body of the ferrule.
  • the optical fiber 29 is surrounded by a sheath 26, this sheath is held on the body of the plug by a flexible part 30 which ensures both the maintenance of the fiber and the seal in the sheet 2.
  • FIG. 5 represents a three-dimensional view of a base 1 according to the invention. It comprises: • a frame 10;
  • the shape of the frame of the base and the distribution of electrical pins and optical contacts can be performed according to a standard.
  • the bases and the corresponding plugs can be of ARINC type, for example ARINC 600 or ARINC 404.
  • the connector can be pluggable or "rackable” in a still called “chair” in French or "rack” or “airframe” in English terminology.
  • the connectors can also be MIL or SUB-D type. In this case, the connectors are mounted and tightened manually.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

The invention concerns plug connectors for an electronic board guaranteeing both an electrical as well as optical connection. These connectors are, more specifically, dedicated to aeronautical applications. The invention relates to a plug connector (1) for an electronic board (4) comprising a mechanical mount (10), electric contacts (7) and at least one rigid optical contact (11) placed in a seat of the mechanical mount, the optical contact being essentially comprised of one or two optomechanical ferrules. The inventive plug connector makes it possible to avoid the use of linking optical fibers between the plug connector and the optoelectronic conversion modules while eliminating the drawbacks associated with the integration of optoelectronic conversion devices in the plug connector.

Description

EMBASE DE CONNECTEUR A CONTACTS ELECTRIQUES ET CONNECTOR HEADER WITH ELECTRICAL CONTACTS AND
OPTIQUESOPTICAL
Le domaine de l'invention est celui des embases de connecteurs pour carte électronique permettant d'assurer à la fois la connexion électrique et optique. Ces connecteurs sont plus spécifiquement dédiés aux applications aéronautiques.The field of the invention is that of connector bases for electronic card to ensure both the electrical and optical connection. These connectors are more specifically dedicated to aeronautical applications.
Pour un certain nombre d'applications, il est nécessaire d'assurer entre des coffrets ou des calculateurs électroniques, à la fois des liaisons électriques et des liaisons optiques. Ces liaisons sont réalisées au moye n de connecteurs mixtes, optiques et électriques. Ces connecteurs comprennent une fiche et une embase. La fiche est solidaire du câble de liaison reliant les dispositifs optoélectroniques ou les calculateurs entre eux et l'embase est généralement soudée directement sur une carte électronique au moyen de contacts électriques encore appelés picots.For a number of applications, it is necessary to provide between boxes or electronic computers, both electrical links and optical links. These connections are made by means of mixed connectors, optical and electrical. These connectors include a plug and a socket. The plug is secured to the connecting cable connecting the optoelectronic devices or computers between them and the base is usually soldered directly to an electronic card by means of electrical contacts also called pins.
Pour réaliser ce connecteur, on utilise généralement le dispositif représenté en figure 1. Une embase 1 est montée sur un circuit imprimé 4 encore appelé PCB, acronyme anglo-saxon de « Printed Board Circuit ». Ce circuit comporte des composants électroniques 5. Une fiche 2 comprenant à la fois des contacts électriques et optiques assure la liaison entre l'embase et un câble de liaison 27 comprenant des câbles électriques 28 et des fibres optiques 29. Sur la figure 1 , l'embase 1 et la fiche 2 sont présentées séparées pour des raisons de clarté.To make this connector, the device shown in FIG. 1 is generally used. A base 1 is mounted on a printed circuit board 4 also called PCB, the acronym for "Printed Board Circuit". This circuit comprises electronic components 5. A plug 2 comprising both electrical and optical contacts provides the connection between the base and a connecting cable 27 comprising electrical cables 28 and optical fibers 29. In FIG. base 1 and plug 2 are presented separately for reasons of clarity.
Cette embase 1 comprend un bâti mécanique 10 comprenant des logements comportant des contacts électriques 7et optiques 8. Cette embase 1 est maintenue sur le circuit imprimé 4 par des moyens mécaniques qui assurent également la liaison électrique. Les moyens représentés sur la figure 1 sont, à titre d'exemple, des colonnettes conductrices 9. Elle est également fixée sur le bâti 3 du calculateur. Les liaisons électriques avec les pistes électriques du circuit sont réalisées au moyens de contacts électriques classiques 7 encore appelés picots, soudés sur le circuit 4. Les contacts optiques sont de type fibres, c'est-à-dire qu'un segment de fibre 8 est relié d'une part à l'embase 1 et d'autre part à une sortie optique d'un module optoélectronique 6 de conversion assurant la transduction des signaux optiques en signaux électriques. Ce module peut être utilisé soit pour l'émission, soit pour la réception, soit pour rémission/réception du signal optique. Il est solidaire du circuit 4. La sortie optique du module de conversion peut comporter soit une connectique optique, soit un segment de fibre directement relié aux dispositifs optoélectroniques internes de conversion du module. On dit alors que le module est « pigtailisé ». La première solution qui permet un montage et un démontage aisé de la fibre est le plus souvent préféré à la seconde. Elle est utilisée, notamment, avec des connexions optiques de type LC.This base 1 comprises a mechanical frame 10 comprising housings comprising electrical contacts 7 and optical 8. This base 1 is maintained on the printed circuit 4 by mechanical means which also provide the electrical connection. The means shown in Figure 1 are, for example, conductive columns 9. It is also fixed on the frame 3 of the computer. The electrical connections with the electrical tracks of the circuit are made by means of conventional electrical contacts 7 also called pins, soldered on the circuit 4. The optical contacts are of the fiber type, that is to say a fiber segment 8 is connected on the one hand to the base 1 and on the other hand to an optical output of a conversion optoelectronic module 6 ensuring the transduction of optical signals into electrical signals. This module can be used either for transmitting or for receiving or for transmitting / receiving the optical signal. It is integral with the circuit 4. The optical output of the conversion module may comprise either optical connectivity or a fiber segment directly connected to the internal optoelectronic devices for converting the module. It is said that the module is "pigtailised". The first solution that allows easy assembly and disassembly of the fiber is most often preferred to the second. It is used, in particular, with LC type optical connections.
Les inconvénients majeurs de cette technique de raccordement sont d'une part :The major drawbacks of this connection technique are on the one hand:
• les problèmes de maintien des fibres optiques issues de l'embase, compte-tenu des conditions d'environnement vibratoire ou de choc qui peuvent être extrêmement sévères pour des calculateurs embarqués sur aéronefs ;The problems of maintaining the optical fibers coming from the base, taking into account the vibratory environment or shock conditions which can be extremely severe for on-board computers on aircraft;
• l'encombrement desdites fibres. En effet, pour que la lumière puisse se propager sans pertes significatives à l'intérieur de la fibre optique, il est nécessaire que son rayon de courbure soit supérieur à une valeur minimale comme on peut le voir sur la figure 1 où le segment de fibre 8 présente un rayon de courbure important. Le respect de ce rayon de courbure pénalise l'encombrement total du dispositif optoélectronique, en particulier lorsque celui-ci est un dispositif de visualisation à écran plat .• the bulk of said fibers. Indeed, for the light to propagate without significant losses inside the optical fiber, it is necessary that its radius of curvature is greater than a minimum value as can be seen in Figure 1 where the fiber segment 8 has a large radius of curvature. Respect for this radius of curvature penalizes the total size of the optoelectronic device, especially when it is a flat screen display device.
Pour pallier ces inconvénients, le brevet américain de numéro 5930428 déposé par la société Rockwell propose d'intégrer les fonctions de conversion optoélectroniques 6 dans l'embase 1 même, comme indiqué sur la figure 2. Ainsi, l'embase 1 ne comporte plus que des sorties électriques classiques 7 et les sorties électriques 71 des modules de conversion, sorties que l'on peut facilement soudées sur le circuit imprimé 4. On résout ainsi le problème d'encombrement de l'embase. Cette solution a cependant deux inconvénients : • pour conserver un encombrement raisonnable de l'embase, les composants optoélectroniques standards sont mal adaptés. Il devient alors nécessaire d'utiliser des composants optoélectroniques à très haute intégration d'un coût élevé. • Chaque application nécessite des composants spécifiques adaptés aux standards des fibres, aux longueurs d'onde utiles et aux puissances émises.To overcome these drawbacks, US Patent No. 5930428 filed by Rockwell proposes to integrate the optoelectronic conversion functions 6 in the base 1 itself, as shown in Figure 2. Thus, the base 1 has only conventional electrical outputs 7 and the electrical outputs 71 of the conversion modules, outputs that can be easily soldered to the printed circuit board 4. This solves the problem of size of the base. This solution, however, has two disadvantages: • to maintain a reasonable size of the base, the standard optoelectronic components are poorly adapted. It then becomes necessary to use optoelectronic components with very high integration and high cost. • Each application requires specific components adapted to fiber standards, useful wavelengths, and powers emitted.
L'embase selon l'invention permet d'éviter l'emploi de fibres optiques de liaison entre l'embase et les modules de conversion optoélectroniques tout en supprimant les inconvénients de l'intégration des dispositifs de conversion optoélectroniques dans l'embase.The base according to the invention avoids the use of optical fibers connecting the base and the optoelectronic conversion modules while eliminating the disadvantages of the integration of optoelectronic conversion devices in the base.
Plus précisément, l'invention a pour objet une embase de connecteur pour carte électronique comprenant un bâti mécanique et au moins un contact électrique, caractérisé en ce qu'elle comporte au moins un contact optique rigide placé dans un logement du bâti mécanique.More specifically, the invention relates to a connector socket for an electronic card comprising a mechanical frame and at least one electrical contact, characterized in that it comprises at least one rigid optical contact placed in a housing of the mechanical frame.
Avantageusement, le contact optique comprend un segment de fibre optique monté dans une férule mécanique. Il peut également comprendre un segment de fibre optique montés dans deux férules adjacentes, lesdites férules comportant un axe de révolution commun, le segment de fibre optique étant centré sur ledit axe de révolution. Dans un mode privilégié de l'invention, les extrémités libres des deux férules ont des diamètres différents. Avantageusement, le logement et le contact optique comportent des moyens mécaniques associés d'amortissement assurant un maintien souple du contact optique dans le bâti, de façon que ledit contact puisse coulisser librement à l'intérieur de son logement en cas de pression exercée sur l'une de ses extrémités et reprendre sa position initiale lorsque la pression cesse, lesdits moyens mécaniques sont essentiellement une collerette située sur le contact optique et un ressort situé dans le logement du contact optique et entourant le contact optique.Advantageously, the optical contact comprises an optical fiber segment mounted in a mechanical ferrule. It may also include an optical fiber segment mounted in two adjacent ferrules, said ferrules having a common axis of revolution, the optical fiber segment being centered on said axis of revolution. In a preferred embodiment of the invention, the free ends of the two ferrules have different diameters. Advantageously, the housing and the optical contact comprise mechanical means of damping ensuring a flexible maintenance of the optical contact in the frame, so that said contact can slide freely inside its housing in case of pressure exerted on the one of its ends and resume its initial position when the pressure ceases, said mechanical means are essentially a collar located on the optical contact and a spring located in the housing of the optical contact and surrounding the optical contact.
Avantageusement, l'embase comporte au niveau de l'extrémité d'un contact optique en contact avec la fiche un manchon d'alignement, ledit manchon permettant d'assurer la connexion optique en aveugle. L'embase peut être montée sur une carte électronique comportant au moins un module de conversion optoélectronique dans lequel un contact optique de l'embase vient s'enficher, ladite carte étant intégrée à un calculateur ou à un dispositif optoélectronique.Advantageously, the base comprises at the end of an optical contact in contact with the plug an alignment sleeve, said sleeve for ensuring the optical connection blind. The base can be mounted on an electronic card comprising at least one optoelectronic conversion module in which an optical contact of the base comes into play, said card being integrated in a computer or an optoelectronic device.
L'invention sera mieux comprise et d'autres avantages apparaîtront à la lecture de la description qui va suivre donnée à titre non limitatif et grâce aux figures annexées parmi lesquelles :The invention will be better understood and other advantages will become apparent on reading the description which follows given by way of non-limiting example and by virtue of the appended figures among which:
• la figure 1 représente une embase de connecteur selon un premier art antérieur ;• Figure 1 shows a connector base according to a first prior art;
• la figure 2 représente une embase de connecteur selon un second art antérieur ;• Figure 2 shows a connector base according to a second prior art;
• la figure 3 représente une vue en coupe dune embase selon l'invention ; • la figure 4 représente une vue de détail d'un exemple de contact optique selon l'invention ;• Figure 3 shows a sectional view of a base according to the invention; FIG. 4 represents a detailed view of an example of an optical contact according to the invention;
• la figure 5 représente une vue tridimensionnelle d'une embase selon l'invention.FIG. 5 represents a three-dimensional view of a base according to the invention.
La figure 3 représente une vue en coupe d'une embase 1 selon l'invention, montée sur un circuit imprimé 4 comprenant des composants électroniques 5 et un module de conversion optoélectronique 6.FIG. 3 represents a sectional view of a base 1 according to the invention mounted on a printed circuit 4 comprising electronic components 5 and an optoelectronic conversion module 6.
Ce module de conversion peut fonctionner en récepteur. Il convertit alors le signal lumineux en signal électrique . Le module de conversion peut également fonctionner en émetteur. Il convertit alors le signal électrique en signal lumineux. Ces composants sont généralement de type OSA, acronyme anglo-saxon de « Optical Sub Assembly ». Dans le cas d'un émetteur, le composant est un TOSA, acronyme anglo-saxon de « Transmitter Optical Sub Assembly ». L'émission est alors assurée soit par une diode laser, soit par un VCSEL, acronyme anglo-saxon de « Vertical Cavity Surface Emitting Laser ». ». Dans le cas d'un récepteur, le composant est un ROSA, acronyme anglo-saxon de « Receiver Optical Sub Assembly » et comporte généralement une photodiode de réception et un amplificateur de trans-impédance. L'embase 1 comprend essentiellement : • un bâti 10 ;This conversion module can operate as a receiver. It then converts the light signal into an electrical signal. The conversion module can also operate as a transmitter. It then converts the electrical signal into a light signal. These components are generally of the OSA type, the acronym for "Optical Sub Assembly". In the case of a transmitter, the component is a TOSA, acronym for "Transmitter Optical Sub Assembly". The emission is then ensured either by a laser diode or by a VCSEL, acronym for Vertical Cavity Surface Emitting Laser. ". In the case of a receiver, the component is a ROSA, acronym for "Receiver Optical Sub Assembly" and generally comprises a receiving photodiode and a transimpedance amplifier. The base 1 essentially comprises: A frame 10;
• des contacts électriques 7 ;• electrical contacts 7;
• au moins un contact optique 1 1.At least one optical contact 1 1.
Le contact optique 1 1 vient s'enficher dans le module de conversion. Pour que la liaison se fasse correctement sans pertes optiques importantes, le module de conversion doit être parfaitement positionné sur le circuit imprimé. Pour réaliser ce positionnement, on utilise un gabarit de montage positionné sur le circuit pendant la soudure des picots de connexion du module.The optical contact 1 1 is plugged into the conversion module. In order for the connection to be successful without significant optical losses, the conversion module must be perfectly positioned on the printed circuit board. To achieve this positioning, a mounting template positioned on the circuit is used during the soldering of the connection pins of the module.
Les avantages de ce mode de réalisation des embases sont nombreux :The advantages of this embodiment of the bases are numerous:
• L'embase est purement passive et ne comporte pas de composants actifs de conversion comme des émetteurs ou des récepteurs photoélectriques. Ainsi, l'embase est indépendante des paramètres de l'application envisagée comme le débit de transmission, le protocole de transmission, le sens de la transmission, la longueur d'onde optique...• The base is purely passive and does not include active conversion components such as transmitters or photoelectric receivers. Thus, the base is independent of the parameters of the intended application such as the transmission rate, the transmission protocol, the direction of transmission, the optical wavelength ...
• La réalisation industrielle est facile, sans contraintes d'intégration de composants actifs et utilise des composants qui peuvent être des composants standards ;• Industrial implementation is easy, with no integration requirements for active components and uses components that can be standard components;
• L'embase et la fiche associée peuvent respecter les standards en vigueur pour les connecteurs électriques classiques.• The base and the associated plug can comply with the standards in force for conventional electrical connectors.
A titre d'exemple non limitatif, la figure 4 représente une vue de détail d'un exemple de contact optique 11 selon l'invention. Le contact optique comprend essentiellement une férule mécanique 12 comprenant un segment de fibre optique 13.By way of non-limiting example, FIG. 4 represents a detailed view of an example of an optical contact 11 according to the invention. The optical contact essentially comprises a mechanical ferrule 12 comprising an optical fiber segment 13.
Sur la figure 4, la férule est présentée en une seule pièce mécanique. L'usinage d'une telle férule de dimension importante peut se révéler complexe et d'un coût élevé. Aussi, le contact optique peut également comprendre un segment de fibre optique monté dans deux férules adjacentes, lesdites férules comportant un axe de révolution commun, le segment de fibre optique étant centré sur ledit axe de révolution. Cette disposition permet en outre d'utiliser des férules de taille standard. Les férules peuvent être en céramique, en zircone qui est un oxyde de zirconium ou en métal.. A titre de premier exemple, les extrémités de la férule en contact avec le module de conversion ont un diamètre de 1.25 millimètre, compatible des connecteurs de type « LUXCIS», commercialisés par la société RADIALL. Les parties extrêmes de la férule ne sont pas nécessairement de même diamètre. A titre de second exemple, la première extrémité de la férule en contact avec le module de conversion a un diamètre de 1.25 millimètre, compatible des connecteurs de type « LC » et la seconde extrémité de la férule qui assure la liaison avec la fiche a un diamètre de 2.5 millimètres, compatible des contacts optiques de marque « ELIO », commercialisés par la société SOURIAU.In Figure 4, the ferrule is presented in a single mechanical part. Machining such a ferrule of large size can be complex and expensive. Also, the optical contact may also include an optical fiber segment mounted in two adjacent ferrules, said ferrules having a common axis of revolution, the optical fiber segment being centered on said axis of revolution. This arrangement also makes it possible to use ferrules of standard size. The ferrules may be ceramic, zirconia which is a zirconium oxide or metal .. As a first example, the ends of the ferrule in contact with the conversion module have a diameter of 1.25 millimeters, compatible connectors type " LUXCIS ", marketed by RADIALL. The extreme parts of the ferrule are not necessarily of the same diameter. As a second example, the first end of the ferrule in contact with the conversion module has a diameter of 1.25 millimeters, compatible connectors type "LC" and the second end of the ferrule which provides the connection with the plug has a diameter of 2.5 millimeters, compatible with "ELIO" optical contacts, marketed by SOURIAU.
La férule est placée dans le logement 14. Pour assurer un amortissement souple de la férule dans son logement 14, celui-ci comporte un ressort 15 et une butée 16. La férule 12 comporte une collerette 17. Le ressort 15 est disposé autour de la férule en compression entre la butée 16 et la collerette 17. Cette disposition permet d'assurer un très bon contact optique entre la férule et le module de conversion 6. Ce dernier comporte un émetteur ou un récepteur 61. Pour simplifier le montage de la férule dans son logement ou pour réduire l'encombrement, II est également possible de supprimer le ressort. Dans ce cas, la férule doit comporter un système de freinage pour éviter qu'elle ne puisse sortir librement de son logement lorsque l'embase n'est pas montée sur le circuit. Ce système doit cependant être suffisamment souple pour que les contacts de la fiche puissent facilement pousser en butée la férule dans la connectique du module de conversion.The ferrule is placed in the housing 14. To ensure soft damping of the ferrule in its housing 14, it comprises a spring 15 and a stop 16. The ferrule 12 has a flange 17. The spring 15 is arranged around the ferrule in compression between the stop 16 and the collar 17. This arrangement ensures a very good optical contact between the ferrule and the conversion module 6. The latter comprises a transmitter or a receiver 61. To simplify the mounting of the ferrule in its housing or to reduce the size, it is also possible to remove the spring. In this case, the ferrule must include a braking system to prevent it from freely coming out of its housing when the base is not mounted on the circuit. However, this system must be sufficiently flexible so that the contacts of the plug can easily push the end ferrule into the connectors of the conversion module.
Pour assurer la protection de la liaison optique férule/module de conversion, une pièce 62 en mousse ou en plastique souple est placée autour du module après montage de l'embase. On évite ainsi toute introduction de liquide ou de salissures qui dégraderait le rendement de la liaison optique.To ensure the protection of the optical link ferrule / conversion module, a piece 62 of foam or flexible plastic is placed around the module after mounting of the base. This avoids any introduction of liquid or dirt which would degrade the performance of the optical link.
La seconde extrémité de la férule doit comporter un manchon d'alignement 19. Ce manchon est maintenu dans une pièce mécanique 18 solidaire de l'embase et qui peut être démontable de façon à pouvoir nettoyer facilement l'extrémité libre du segment de fibre optique 13. A titre d'exemple, la liaison optique embase/fiche peut être assurée par un contact optique comportant une férule optique 20 disposée dans la fiche 2. Cette férule 20 entoure une fibre optique 21 située dans le prolongement du segment de fibre optique 13. Le logement 22 du contact optique comporte également une butée 24 qui maintient la férule dans le logement et un ressort d'amortissement 25. Le ressort 25 entoure le corps de la férule et est disposé entre le fond du logement et une collerette 23 disposée sur le corps de la férule. En dehors de l'embase, la fibre optique 29 est entourée d'une gaine 26, cette gaine est maintenue sur le corps de la fiche par une pièce souple 30 qui assure à la fois le maintien de la fibre et l'étanchéité dans la fiche 2.The second end of the ferrule must comprise an alignment sleeve 19. This sleeve is held in a mechanical part 18 integral with the base and which can be dismountable so as to easily clean the free end of the optical fiber segment 13 . For example, the optical connection base / plug can be provided by an optical contact having an optical ferrule 20 disposed in the plug 2. This ferrule 20 surrounds an optical fiber 21 located in the extension of the optical fiber segment 13. housing 22 of the optical contact also has a stop 24 which holds the ferrule in the housing and a damping spring 25. The spring 25 surrounds the body of the ferrule and is disposed between the bottom of the housing and a flange 23 disposed on the body of the ferrule. Apart from the base, the optical fiber 29 is surrounded by a sheath 26, this sheath is held on the body of the plug by a flexible part 30 which ensures both the maintenance of the fiber and the seal in the sheet 2.
La figure 5 représente une vue tridimensionnelle d'une embase 1 selon l'invention. Elle comporte : • un bâti 10 ;FIG. 5 represents a three-dimensional view of a base 1 according to the invention. It comprises: • a frame 10;
• des contacts électriques 7 sous forme de picots ;Electrical contacts 7 in the form of pins;
• des contacts optiques 1 1 .• optical contacts 1 1.
Avantageusement, la forme du bâti de l'embase et la répartition des picots électriques et des contacts optiques peut être réalisée selon une norme. A titre d'exemples non limitatifs, dans le domaine aéronautique, les embases et les fiches correspondantes peuvent être de type ARINC, par exemple ARINC 600 ou ARINC 404. Dans ce cas, le connecteur peut être enfichable ou « rackable » dans un support encore appelé « chaise » en français ou « rack » ou «airframe » en terminologie anglo-saxonne. Les connecteurs peuvent également de type MIL ou SUB-D. Dans ce cas, les connecteurs sont montés et serrés manuellement. Advantageously, the shape of the frame of the base and the distribution of electrical pins and optical contacts can be performed according to a standard. As non-limiting examples, in the aeronautical field, the bases and the corresponding plugs can be of ARINC type, for example ARINC 600 or ARINC 404. In this case, the connector can be pluggable or "rackable" in a still called "chair" in French or "rack" or "airframe" in English terminology. The connectors can also be MIL or SUB-D type. In this case, the connectors are mounted and tightened manually.

Claims

REVENDICATIONS
1. Embase (1 ) de connecteur pour carte électronique (4) comprenant un bâti mécanique (10) et au moins un contact électrique (7), caractérisée en ce qu'elle comporte au moins un contact optique (1 1 ) placé dans un logement du bâti mécanique.1. base (1) for an electronic card connector (4) comprising a mechanical frame (10) and at least one electrical contact (7), characterized in that it comprises at least one optical contact (1 1) placed in a housing of the mechanical frame.
2. Embase selon la revendication 1 , caractérisée en ce que le contact optique (1 1 ) comprend un segment de fibre optique (13) monté dans une férule mécanique (12).2. Base according to claim 1, characterized in that the optical contact (1 1) comprises an optical fiber segment (13) mounted in a mechanical ferrule (12).
3. Embase selon la revendication 2, caractérisée en ce que le contact optique (1 1 ) comprend un segment de fibre optique monté dans deux férules adjacentes, lesdites férules comportant un axe de révolution commun, le segment de fibre optique étant centré sur ledit axe de révolution.3. Base according to claim 2, characterized in that the optical contact (1 1) comprises an optical fiber segment mounted in two adjacent ferrules, said ferules having a common axis of revolution, the optical fiber segment being centered on said axis of revolution.
4. Embase selon la revendication 3, caractérisée en ce que les extrémités libres des deux férules ont des diamètres différents.4. Base according to claim 3, characterized in that the free ends of the two ferrules have different diameters.
5. Embase selon l'une des revendications 2 à 4, caractérisée en ce que le logement et le contact optique comportent des moyens mécaniques (15, 16, 17) associés d'amortissement du contact optique dans le bâti, de façon que ledit contact puisse coulisser librement à l'intérieur de son logement (14) en cas de pression exercée sur l'une de ses extrémités et reprendre sa position initiale lorsque la pression cesse.5. Base according to one of claims 2 to 4, characterized in that the housing and the optical contact comprise mechanical means (15, 16, 17) associated damping of the optical contact in the frame, so that said contact can slide freely inside its housing (14) in the event of pressure exerted on one of its ends and resume its initial position when the pressure ceases.
6. Embase selon la revendication 5, caractérisée en ce que les moyens mécaniques sont essentiellement une collerette (17) située sur le contact optique (1 1 ) et un ressort (15) situé dans le logement (14) du contact optique et entourant le contact optique. 6. Base according to claim 5, characterized in that the mechanical means are essentially a flange (17) located on the optical contact (1 1) and a spring (15) located in the housing (14) of the optical contact and surrounding the optical contact.
7. Embase selon l'une des revendications précédentes, caractérisée en ce qu'elle comporte autour d'au moins une extrémité d'au moins un contact optique un manchon d'alignement (19).7. Base according to one of the preceding claims, characterized in that it comprises around at least one end of at least one optical contact an alignment sleeve (19).
8. Carte électronique (4) caractérisée en ce qu'elle comporte au moins une embase selon l'une des revendications précédentes et un module de conversion optoélectronique (6) dans lequel un contact optique de l'embase vient s'enficher.8. Electronic card (4) characterized in that it comprises at least one base according to one of the preceding claims and an optoelectronic conversion module (6) in which an optical contact of the base is plugged.
9. Calculateur électronique caractérisé en ce qu'il comporte au moins une carte électronique (4) selon la revendication 8. 9. Electronic calculator characterized in that it comprises at least one electronic card (4) according to claim 8.
EP05787065A 2004-09-17 2005-09-06 Plug connector having electric and optical contacts Withdrawn EP1790045A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0409886A FR2875646B1 (en) 2004-09-17 2004-09-17 ELECTRICAL AND OPTICAL CONTACTING CONNECTOR PLUG
PCT/EP2005/054394 WO2006029975A2 (en) 2004-09-17 2005-09-06 Plug connector having electric and optical contacts

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EP1790045A2 true EP1790045A2 (en) 2007-05-30

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US (1) US7429137B2 (en)
EP (1) EP1790045A2 (en)
AU (1) AU2005284217A1 (en)
FR (1) FR2875646B1 (en)
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WO (1) WO2006029975A2 (en)

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Also Published As

Publication number Publication date
FR2875646B1 (en) 2006-12-29
US20080003840A1 (en) 2008-01-03
IL181982A0 (en) 2007-07-04
FR2875646A1 (en) 2006-03-24
WO2006029975A2 (en) 2006-03-23
AU2005284217A1 (en) 2006-03-23
US7429137B2 (en) 2008-09-30
WO2006029975A3 (en) 2007-10-04

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