EP1543365A1 - Dispositif d'assemblage pour relier de fa on liberable au moins un guide d'ondes optiques avec au moins un element optoelectronique et procede pour monter un dispositif d'assemblage de ce type - Google Patents

Dispositif d'assemblage pour relier de fa on liberable au moins un guide d'ondes optiques avec au moins un element optoelectronique et procede pour monter un dispositif d'assemblage de ce type

Info

Publication number
EP1543365A1
EP1543365A1 EP03732165A EP03732165A EP1543365A1 EP 1543365 A1 EP1543365 A1 EP 1543365A1 EP 03732165 A EP03732165 A EP 03732165A EP 03732165 A EP03732165 A EP 03732165A EP 1543365 A1 EP1543365 A1 EP 1543365A1
Authority
EP
European Patent Office
Prior art keywords
connection device
base part
circuit board
optoelectronic component
connector
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Withdrawn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
EP03732165A
Other languages
German (de)
English (en)
Inventor
Roger KRÄHENBÜHL
Jörg KUEHNE
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.)
Huber and Suhner AG
Original Assignee
Huber and Suhner AG
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 Huber and Suhner AG filed Critical Huber and Suhner AG
Publication of EP1543365A1 publication Critical patent/EP1543365A1/fr
Withdrawn legal-status Critical Current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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4292—Coupling light guides with opto-electronic elements the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4246—Bidirectionally operating package structures
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres

Definitions

  • the present invention relates to the field of optical connection technology. It relates to a connection device for releasably connecting at least one optical waveguide to at least one optoelectronic component, and to a method for mounting such a connection device.
  • Optical connections are increasingly being used to connect circuit parts or system parts of complex electronic systems for data transmission and processing because, on the one hand, they have extremely high data Enable transmission rates or bandwidths and, on the other hand, are insensitive to electromagnetic influences.
  • optoelectronic transmitting and / or receiving elements such as LEDs, laser diodes, photodiodes, phototransistors and the like must be provided in the circuit parts to be connected, which convert electrical pulses into optical pulses or convert optical pulses back into electrical pulses, and which are connected to each other by appropriate optical fibers.
  • the optical connections should advantageously be designed to be pluggable in order to facilitate assembly and maintenance. For this purpose, so-called “receptacles" are required, which are mechanically connected to the optoelectronic components or the printed circuit boards (PCBs) carrying them or comparable carriers, and which enable the optically adjusted insertion of an optical fiber connector.
  • connection devices in which the components are accommodated in TO housings are described in US Pat. No. 5,546,490 or US Pat. No. 5,751, 878 or US Pat. No. 5,042,891.
  • a modification of these solutions, in which the cap of the component housing is dispensed with, is disclosed in US Pat. No. 6,409,398.
  • connection devices which emanate from plastic-encapsulated optoelectronic components are from US Pat. No. 4,461,537 or US Pat. No. 5,243,678 (in a duplex arrangement) or EP-A1-0 938 006 or EP-A1-1 113 300 known.
  • Another solution (US-A-5, 692,083) proposes a one-piece connection device with an integrated lens, which receives the component arranged on a ceramic plate at one end and has a bore for inserting a ferrule at the other end.
  • DE-A1-199 10 163 discloses an optical connector in which an attachment is placed and fixed on the actual active optoelectronic module, onto which the plug of an optical waveguide can be attached laterally.
  • VCSEL Vertical Cavity Surface Emitting Laser
  • AP850 from Avalon Photonics, Zurich, Switzerland
  • Such a chip component has outer dimensions in the millimeter range and an active area in the micrometer range.
  • FIG. 1 A connecting device for components arranged directly on the circuit board in chip form has been described in US-A-6,071,017 in various embodiments.
  • One embodiment (Fig. 1, 2) has two coaxial sockets, of which the inner one carries an optical element, while the outer one is provided for receiving the ferrule with the optical waveguide. Both sockets have to be adjusted with great difficulty and fixed separately on the circuit board.
  • Other embodiments (FIGS. 6, 8, 9) are based on a one-piece housing with a built-in lens and molded ferrule holder.
  • a disadvantage of all these proposals is that for the components ceptacles and connectors are specified, which represent special solutions, so that none of the standardized optical connectors (eg of the type LC or LX.5 or the like) can be used for the optical connection.
  • connection device for a detachable connection to an optical waveguide for optoelectronic components in chip form placed directly on a carrier or a circuit board, which is simple and space-saving, is easy to adjust and is modular and can be flexibly adapted to different standardized optical connector systems, and to specify a method for mounting such a connection device.
  • connection device comprises a base part which is independent of the respective connector system, which is attached to the surface of the carrier or the circuit board and surrounds the optoelectronic component, and that the connection device further comprises a coupling part which is matched to the respective connector system, which connects to the base part towards the outside and is fastened to the base part, and which has an insertion opening for inserting the standardized fiber-optic connector.
  • a first preferred embodiment of the connection device is characterized in that the base part comprises a preferably rectangular plate which extends transversely to the plug-in direction of the fiber-optic connector and which can be connected to the coupling part on one side and one on the other side Has adapter, with which the base part can be placed on the carrier or the circuit board, that the standardized fiber optic connector has a ferrule in which the light Waveguide ends that a ferrule holder is provided in the base part on the opposite side of the plate from the adapter when the connector is plugged in, in which the through hole of the base part opens, that the ferrule holder protrudes into the coupling part, and that the adapter and the ferrule holder part of a one-piece insert, which is inserted into the plate of the base part, the through hole running inside the insert between the adapter and the ferrule holder.
  • the combination of adapter and ferrule holder into one insert makes it particularly easy to adjust the connection device.
  • the plate of the base part which is firmly connected to the insert and is largely freely selectable in terms of its dimensions, enables optimum adaptation to the coupling part required for the respective standard connector.
  • the insert is preferably made of a metal and the plate is made of a plastic.
  • the insert and the plate can also be combined into a one-piece element and be made of a plastic.
  • the focusing means either comprising a lens which is located at the entrance of the through hole is arranged, or comprise a focusing mirror surface.
  • the plate of the base part is arranged parallel to the carrier or to the circuit board; the through hole and the insertion opening run in the direction of the optical axis of the optoelectronic component.
  • the adapter is then preferably hollow-cylindrical.
  • the plate of the base part is perpendicular to the carrier or arranged to the circuit board; the through hole and the insertion opening then run parallel to the carrier or to the circuit board, and means are provided in the adapter for deflecting the light rays extending between the optoelectronic component and the optical waveguide at right angles.
  • the deflection means can either comprise a hemispherical lens, a flat mirror surface or a focusing mirror surface.
  • FIG. 1 in a perspective exploded view of the various components
  • connection device Parts of a connection device according to a first preferred exemplary embodiment of the invention for the detachable connection of an LC plug connector to an optoelectronic, in particular VCSEL element;
  • FIG. 2 shows, in a representation comparable to FIG. 1, a second preferred exemplary embodiment of the connection device according to the invention for the detachable connection of an LX.5 plug connector to an optoelectronic, in particular VCSEL element;
  • FIG. 3 shows, in a representation comparable to FIG. 1, a third preferred exemplary embodiment of the connection device according to the invention for the detachable connection of a miniaturized plug connector according to WO-A1-01 / 059499 to an optoelectronic, in particular VCSEL, element;
  • Fig. 4 shows a section through the base part according to Fig. 1-3 in the
  • FIG. 5 shows a section through a base part comparable to FIG. 4 with a shortened adapter and without a spherical lens
  • FIG. 6 shows a section through a base part with 90 ° deflection by means of a hemispherical focusing lens as a deflecting mirror;
  • Fig. 7 shows a section through a base part comparable to Fig. 6 with the
  • FIG. 8 shows a section through a base part comparable to FIG. 6 with a combined deflecting and focusing mirror.
  • connection device 10 serves for the pluggable connection of an optical waveguide or optical cable provided with a fiber optic connector 20 to an optoelectronic component 12, which in this specific example is designed as a VCSEL (Vertical Cavity Surface Emitting Laser) and as a chip directly on a circuit board 11 sits, which can either be a small-area, independent platform for the component 12 or part of a larger-area circuit board.
  • VCSEL Vertical Cavity Surface Emitting Laser
  • the fiber optic connector 20 in this example is a standardized LC connector, which is described in detail in US Pat. No. 5,481634 and has a diameter of the ferrule 21 of only 1.25 mm and outer dimensions (“footprint”) of 4 .6 mm x 4.6 mm enables a high connector density.
  • footprint outer dimensions
  • the connection densities that can be achieved are lower.
  • the plug connector 20 has a two-part housing 22 from which a sleeve 25 protrudes at the end on the cable side for pushing on an anti-kink sleeve (not shown).
  • a locking device which comprises a flexible actuating lever 24 which extends obliquely backwards from the housing 22 and in the central region of which locking elements 23 which protrude laterally are formed. If the plug connector 20 is inserted into a corresponding plug-in opening of a coupling, the locking elements 23 snap behind a locking edge provided in the coupling, so that the plug connector 20 cannot be pulled out of the coupling unintentionally by a pull on the cable. To unlock the actuating lever 24 is pressed in the direction of the housing 22 until the latching elements 23 come free from the latching edge, and the connector 20 is then pulled out while the actuating lever 24 is pressed.
  • the coupling for the plug connector 20 is formed by a substantially cuboid-shaped, internally hollow coupling part 17, which has an insertion opening 18 for the plug connector with corresponding guide elements in the lower region, and a latching device 19 above the insertion opening 18, which extends in the longitudinal direction, includes lateral guide grooves for the locking elements 23 and (not visible in FIG. 1) transverse locking edges.
  • the coupling part 17 only receives the housing 22 of the connector 20 and the locking elements 23. However, the actual optical connection is made via the Ferrule 21 of the connector 20 mediates, in the central bore of the optical fiber of the optical cable ends.
  • a longitudinally slotted ferrule holder (“sleeve”) 16 is provided, which is arranged on a separate base part 15.
  • the structure of the base part 15 from FIG. 1 results from the sectional view in FIG. 4.
  • the base part 15 consists of a substantially rectangular plate 52, which extends transversely to the direction of insertion, the outer dimensions of which are adapted to the cross-sectional dimensions of the coupling part 17.
  • An insert 53 is fitted into an opening in the plate 52 transversely to the plane of the plate and protrudes beyond the plate 52 with the ferrule holder 16 on the side facing the connector 20. On the side facing away from the connector 20, the insert merges into a hollow cylindrical adapter 14.
  • the base part 15 with the ring-shaped edge of the adapter 14 is placed on the circuit board 11, which on its upper side has the one to be connected optoelectronic component 12 carries.
  • the plate 52 is - like the coupling part 17 - preferably made of a suitable plastic, the insert 53 preferably made of a metal.
  • a central through-bore 45 which extends in the plug-in direction and which connects the interior enclosed by the ferrule holder 16 to the interior enclosed by the adapter 14.
  • the through hole 45 Through the through hole 45, light can be exchanged between the optoelectronic component 12 and the optical waveguide surrounded by the ferrule 21 of the inserted connector 20.
  • the component 12 is a light-emitting component such as a laser of the VCSEL type, and if the distance between the light source and the end of the optical waveguide is comparatively large due to the length of the adapter 14, it is advantageous to use the component 12 and the input of the Optical fiber to provide a focusing optical element in a conventional manner.
  • the focusing element is a spherical lens 13, which is inside the insert 53 at the component-side entrance of the Through hole 45 is arranged.
  • the focusing element is also conceivable - as shown in FIG. 5 - to omit the focusing lens if a much shorter adapter 14 'is used instead of the "long" adapter 14.
  • connection device 10 receives the ferrule 21 of the connector 20 with the glued-in end of the optical waveguide and is thus directly for the optical connection between the optical waveguide and the optoelectronic component 12 responsible.
  • the base part 15 also houses the additional optical devices for focusing (e.g. lenses) and, if necessary, beam deflection (e.g. mirrors). The base part 15 therefore forms the "optical" part of the connection device 10 and must accordingly be adjusted to the optical center of the component 12.
  • the coupling part 17 is exclusively responsible for the mechanical tasks associated with the plug connection, in particular the mechanically stable guidance and
  • the base part 15 can largely be adapted independently to the characteristics of the respective component 12, while the design of the coupling part 17 is adapted to the respective type of the plug connector.
  • the common connecting element is for all connection devices the plate 52 of the base part 15, which serves to connect the base part 15 to the coupling part 17 and which is expediently chosen to be the same for all types of connection devices.
  • connection devices 10, 30 and 40 from FIGS. 1, 2 and 3 are compared with one another, which differ only in that a different connector type for the optical connection to the same optoelectronic component 12 1, the connector 20 is of the LC connector type, in the embodiment of FIG. 2 a fiber optic connector 32 of the LX.5 type from the US company ADC Communications, Inc. is used.
  • a fiber optic connector 32 of the LX.5 type from the US company ADC Communications, Inc. is used.
  • Such a connector that is - as well How the LC connector is characterized by a high achievable connector density is described, for example, in US Pat. No. 6,142,676.
  • a ferrule 31 also with a diameter of 1.25 mm
  • a sleeve 35 protrudes toward the rear for attaching an anti-kink sleeve.
  • an elastically pivotable actuating lever 34 is formed on the upper side of the housing 36 and is equipped with latching elements 33 at its free end.
  • the special feature of the LX.5 connector 32 compared to the LC connector 20 is that the end face with the ferrule 31 can be covered by a protective flap (not shown in FIG. 2) which is pivoted about 90 ° about a pivot axis 29 can. This protective flap opens automatically when the plug connector 32 is inserted into the insertion opening 28 of a correspondingly designed coupling part 26.
  • the coupling part 26 has the same outer dimensions as the coupling part 17 in FIG. 1 and can therefore be connected to the same type of base part 15. Inside the coupling part 26, however, the guide rails 27 for guiding the housing 36 of the connector 32 are adapted to the special configuration of the connector 32. This also applies to the not visible locking edges, which cooperate with the locking elements 33 on the actuating lever 34.
  • a fiber-optic connector 42 is used, which takes up even less space than the connectors 20 and 32 from FIGS. 1 and 2.
  • the connector 42 which was developed by the applicant and in which WO-A1 -01/59499 is described in detail, dispenses with a closed housing in favor of a narrow, frame-like, laterally open housing 41, in which the ferrule 39 (with a diameter of 1.25 mm) is resiliently supported by means of a compression spring 43 , On the side opposite the ferrule 39, the fiber optic cable 44 is led out with the optical waveguide.
  • the plug connector 42 On the top of the housing 41 there is also a latching element 51 on an elastically bendable tongue arranged, by means of which the plug connector 42 can be inserted into the associated coupling in a snap-in manner. Since this plug connector 42, which is reduced to the bare minimum, is extremely small and space-saving, the associated coupling part 37 is correspondingly reduced in external dimensions over almost the entire length and only expands at the end facing away from the plug to form a plate which corresponds to the plate 52 of the base part 15 in the big one is adjusted. In this way, base part 15 and coupling part 37 can be connected to one another (for example, glued) without difficulty and with maximum mechanical stability. In this example too, the insertion opening 38 of the coupling part 37 is adapted to the outer contour of the plug connector 42 and contains corresponding locking edges for the locking element 51 on the inside.
  • a change in the base part 15 is necessary if the plug-in direction of the plug connector 20, 32 or 42, which coincides with the optical axis of the plug connector, is not to be oriented parallel to the optical axis of the optoelectronic component 12, but rather perpendicular to it, that is if Connectors 20, 32, 42 to be inserted parallel to the circuit board 11.
  • the change is made only on the insert 53 of the base part 15, as is shown by way of example in FIGS. 6, 7 and 8.
  • the adapter 14 ′′ on the insert 53 is designed such that it surrounds the optoelectronic component 12 on the circuit board 11 with a deflection space 49, which opens outwards transversely to the through bore 45 or 46.
  • the optical axis of the component 12 is thus perpendicular to the axis of the through bore 45 or 46, which is identical to the axis of the ferrule holder 16 is.
  • the light emitted vertically upward by the component 12 must therefore be deflected at a right angle into the through hole and at the same time also focused.
  • the deflection takes place through a plane mirror surface 48 inclined by 45 ° in the deflection space.
  • the focusing is achieved either by a hemispherical lens 47, the plane boundary surface of which is inclined by 45 °, also acts as a mirror surface 48 for rays passing through the lens (FIG. 6), or by a spherical lens 13 arranged at the entrance of the through-bore 45, which interacts with a separate mirror surface 48 (Fig. 7).
  • Another possibility results from the fact that the flat mirror surface is replaced by a parabolic mirror surface 50 (FIG. 8).
  • a deflection and focusing is achieved at the same time by the parabolic mirror surface 50.
  • the invention can be used both with active light-emitting components (VCSELs, LEDs, etc.) and with passive light-receiving components (photodiodes, phototransistors, etc.).
  • VCSELs active light-emitting components
  • passive light-receiving components photodiodes, phototransistors, etc.
  • other standardized connector types e.g. E-2000, F-3000, SC, ST etc.
  • circuit board 12 optoelectronic component (e.g. VCSEL)
  • Locking device 32.42 fiber optic connector, 31.39 ferrule, 36.41 housing, 33.51 locking element, 34 actuating lever, 35 sleeve
  • Compression spring 56 cables (fiber optic), 46 through holes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

L'invention concerne un dispositif d'assemblage (10) pour relier de façon libérable au moins un guide d'ondes optiques avec au moins un élément (12) optoélectronique qui, en tant que puce, est placé, en contact électrique, directement sur la surface d'un support ou d'une plaquette (11) à circuits imprimés, ledit élément ayant un axe optique perpendiculaire au support ou à la plaquette (11). L'invention vise à rendre ce dispositif d'assemblage d'utilisation plus souple et de conception plus simple. A cet effet, le guide d'ondes optiques est équipé, sur l'extrémité à relier, d'un connecteur enfichable (20) standard pour fibres optiques, et le dispositif d'assemblage (10) comprend une pièce de base (15) qui est fixée sur la surface du support ou de la plaquette (11), entoure l'élément (12) optoélectronique et comporte un orifice de passage pour les signaux optiques échangés entre l'élément (12) optique et le guide d'ondes optiques. En outre, le dispositif d'assemblage (10) est pourvu d'un élément de couplage (17) raccordé vers l'extérieur à la pièce de base (15), sur laquelle il est fixé, cet élément de couplage comportant un orifice de connexion (18) pour enficher le connecteur enfichable (20) standard pour fibres optiques.
EP03732165A 2002-09-23 2003-07-08 Dispositif d'assemblage pour relier de fa on liberable au moins un guide d'ondes optiques avec au moins un element optoelectronique et procede pour monter un dispositif d'assemblage de ce type Withdrawn EP1543365A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH160202 2002-09-23
CH16022002 2002-09-23
PCT/CH2003/000452 WO2004027482A1 (fr) 2002-09-23 2003-07-08 Dispositif d'assemblage pour relier de façon liberable au moins un guide d'ondes optiques avec au moins un element optoelectronique et procede pour monter un dispositif d'assemblage de ce type

Publications (1)

Publication Number Publication Date
EP1543365A1 true EP1543365A1 (fr) 2005-06-22

Family

ID=32000114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03732165A Withdrawn EP1543365A1 (fr) 2002-09-23 2003-07-08 Dispositif d'assemblage pour relier de fa on liberable au moins un guide d'ondes optiques avec au moins un element optoelectronique et procede pour monter un dispositif d'assemblage de ce type

Country Status (4)

Country Link
US (1) US7255489B2 (fr)
EP (1) EP1543365A1 (fr)
AU (1) AU2003238330A1 (fr)
WO (1) WO2004027482A1 (fr)

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US7255489B2 (en) 2007-08-14
US20050259924A1 (en) 2005-11-24
AU2003238330A1 (en) 2004-04-08
WO2004027482A1 (fr) 2004-04-01

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