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WO1998034144A1 - Composants optiques - Google Patents

Composants optiques

Info

Publication number
WO1998034144A1
WO1998034144A1 PCT/GB1998/000313 GB9800313W WO9834144A1 WO 1998034144 A1 WO1998034144 A1 WO 1998034144A1 GB 9800313 W GB9800313 W GB 9800313W WO 9834144 A1 WO9834144 A1 WO 9834144A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
component
optical
package
parts
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.)
Ceased
Application number
PCT/GB1998/000313
Other languages
English (en)
Inventor
Adrian Charles O'donnell
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.)
Integrated Optical Components Ltd
Original Assignee
Integrated Optical 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 Integrated Optical Components Ltd filed Critical Integrated Optical Components Ltd
Publication of WO1998034144A1 publication Critical patent/WO1998034144A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • G02B6/26—Optical coupling means
    • G02B6/30—Optical coupling means for use between fibre and thin-film 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
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/4236—Fixing or mounting methods of the aligned elements
    • G02B6/4245—Mounting of the opto-electronic elements
    • 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
    • G02B6/4256—Details of housings
    • G02B6/426—Details of housings mounting, engaging or coupling of the package to a board, a frame or a panel
    • G02B6/4261—Packages with mounting structures to be pluggable or detachable, e.g. having latches or rails
    • 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
    • G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
    • 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
    • G02B6/4213—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being polarisation selective optical elements
    • 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
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/4236—Fixing or mounting methods of the aligned elements
    • G02B6/424—Mounting of the optical light guide
    • 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
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/4236—Fixing or mounting methods of the aligned elements
    • G02B6/4244—Mounting of the optical elements
    • 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
    • G02B6/4251—Sealed packages
    • 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
    • G02B6/4256—Details of housings
    • G02B6/4262—Details of housings characterised by the shape of the housing
    • G02B6/4265—Details of housings characterised by the shape of the housing of the Butterfly or dual inline package [DIP] type
    • 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
    • G02B6/4285—Optical modules characterised by a connectorised pigtail

Definitions

  • This invention relates to optical components for incorporation in an optical communication network assembly, and also to a method of manufacturing an optical communication network assembly using such optical components.
  • Optical communications systems are being used increasingly for telecommunications and data transfer systems. Though widely used at present for long-haul systems, optical fibres are now being used for computer, local area and metropolitan networks. There is thus pressure for the manufacture of assemblies used in these networks to be simplified, resulting in lower costs, and also for increased component packing densities on network cards. Though many of the components used in a network card assembly may be positioned and connected to the card by automatic machinery, the handling of optical fibres on an automatic basis has proved to be extremely difficult, resulting in high manual assembly costs for the optical and opto-electronic parts of the card assembly.
  • Many active and passive optical components comprise a device contained within an hermetically sealed package, with an optical fibre passing through the package wall and optically coupled to the device within the package.
  • the fibre is sealed to the package wall where the fibre passes therethrough and a suitable length of the fibre (a so-called "pigtail") extends away from the package, for connection as required for example to a corresponding pigtail of some other component, to a connector on the card which is to carry the component, or the like.
  • pigtail a suitable length of the fibre
  • the present invention aims at providing both optical components and a method of assembling optical components wherein fibre pigtails are eliminated, so allowing easier automated manufacturing techniques for assemblies using such components and also allowing better use of the space on a card, thus permitting use of a greater component packing density on that card.
  • an optical component for incorporation in an optical transmission network which component comprises an optical device, a package containing said device and including a wall portion, one part of a two part connector mounted on said wall portion and having means defining an optical path therethrough which means is in optical communication with the device within the package, and said one connector part is configured to connect mechanically and optically with the other part of the connector which other part is of a complementary form to the one part and which other connector part is mounted on a package of a further optical component.
  • an optical connection is made to the component of this invention without the need to have an optical fibre pigtail extending away from the component package. Rather, the package carries a connector part which may mate directly with a complementary connector part provided for example on another active or passive optical component. In this way, one optical component may be plugged directly into another optical component without the presence of a length of optical fibre external to and extending between the components.
  • the components may thus be mounted on a card much closer together than otherwise would be the case and no space need be provided on the card to accommodate suitable fibre management techniques.
  • a modified form of this invention thus provides an optical component for incorporation in an optical transmission network, which component comprises an optical device, a package containing said device and including a wall portion, one part of a two part connector mounted on said wall portion and having means defining an optical path therethrough which means is in optical communication with the device within the package, and said one connector part is configured to connect mechanically with the other part of the connector and optically with a further one connector part which is mounted on a package of a further optical component, and an adapter is used to couple the two connector parts which adapter is configured to receive two one connector parts and allows coupling of the optical paths of the two one connector parts.
  • the adapter is purely mechanical in function and does not itself participate in the optical coupling.
  • the optical component is in the form of a laser device or a photo-detector, there may be only one optical connection to be made to the component.
  • Other components - such as a modulator - may require two or more optical connections, and in this case each such connection may be of a form similar to that described above.
  • the component may have a further wall portion on which is mounted one part of a further two part connector which has means defining an optical path therethrough, said means being in optical communication with the device within the package, and said one connector part of the further connector is configured to connect mechanically and optically with the other part of the connector which other part is of a complementary form to the one part and is mounted on a package of a further optical component or on a fibre.
  • both connector parts may be of the same kind - that is to say, both may be one parts of the same two part connector design, though it would be possible for one wall portion to carry one part of a two part connector and the further wall portion to carry the other part of a like two part connector.
  • the latter arrangement will allow a series of optical components to be daisy-chained together, in series.
  • Each of the connector parts of trie two part connector may be provided with means whereby rotational alignment between the parts is maintained upon making a connection with the parts.
  • the polarisation axes of an optical signal being transferred through the connector will be maintained.
  • one connector part may have one or more projecting lugs and the other connector part one or more corresponding recesses to receive the or each lug of the one part, whereby the two parts can be connected together only if the or each lug of one part are correctly aligned with the or each recess of the other part.
  • a method of manufacturing an assembly having at least two optical components connected together and each having a wall portion on which is mounted a part of a two part connector, one part of the connector being provided on one component and the other part of the connector being provided on the other component and each connector part being coupled to a respective device within the associated component package, which method comprises the steps of directly connecting together the two components by fitting together the two connector parts thereby optically coupling the device of one component to the device of the other component, and then mounting the two connected components on the card and completing electrical connections to the components.
  • a modified form of the manufacturing method of this invention is for use where two optical components to be connected together each have a wall portion with the same one part of a two part connector, each one part being coupled to a respective device within the component.
  • This manufacturing method comprises the steps of connecting together the two components by using an adapter which defines two other connector parts and which receives the two one connector parts thereby optically coupling the device of one component to the device of the other component, and then mounting the two connected components on the card and completing electrical connections to the components.
  • Figure 1 is a plan view of a conventional optical component connection technique
  • Figure 2 is a side view on the arrangement of Figure 1 ;
  • Figure 3 is a plan view of a laser provided with one part of a connector and an optical modulator also provided with connector parts;
  • Figure 4 is a plan view of the modulator of Figure 3, connected to the laser and to an optical fibre;
  • Figure 5 is a detailed plan view of one particular two-part connector arrangement suitable for use in performing the connection method of this invention.
  • Figure 6 is a detailed plan view of a second particular two-part connector arrangement suitable for use in performing the method of this invention.
  • a first optical component 10 in the form of a package 11 containing a laser device (not shown).
  • the package is provided with a pair of mounting holes 12 allowing the package to be secured to the surface of a card (also not shown) and electrical connection leads 13 extend away from the package on both sides thereof, for connection to tracks provided on the card.
  • An optical fibre 14 passes through an opening in an end wall 16 of the package and is appropriately coupled to the laser device within the package to receive light emitted by the laser device.
  • the fibre is sealed to the package using conventional techniques well known to those skilled in the art and which form no part of the present invention; they will not therefore be described in further detail here.
  • the free end of the fibre 14 (which fibre is conventionally referred to as a "pigtail”) is fitted with an industry standard connector 17.
  • an optical modulator 18 having a package 19 provided with mounting holes not shown whereby the package may be secured to the surface of a card.
  • the modulator 18 has electrical connection leads 21 projecting therefrom, for connection to further tracks provided on the card.
  • the modulator has input and output optical fibres 22 and 23 passing through the package 19 and connected to the modulator device within the package. The fibres are sealed to the package and their free ends terminate in industry standard connectors 24 and 25 respectively, all three connectors 17, 24 and 25 being of the same design.
  • Connector 17 of the laser component 10 is optically coupled to connector 24 of the modulator 18 by means of an adapter 26 which connects optically and mechanically with both connectors.
  • connector 25 of the modulator is optically coupled to a network fibre 27 having a similar connector 28 on its free end, by means of a further adapter 29.
  • the package 1 1 of the laser component 10 has an end wall 31 on which one part 32 of a two part connector is mounted, the one part of the connector including means 33 defining an optical path through the connector and which is coupled within the package to the laser device so as to receive light emitted thereby.
  • End wall 34 of the package 19 of the modulator 18 is provided with the other part 35 of the two part connector, which other part is complementary to the one part 32 provided on the laser package 11.
  • the other part 35 on the modulator 18 may be connected directly to the one part 32 on the laser component.
  • End wall 36 of the modulator opposed to end wall 34, is also provided with an other part 37 of a further two part connector, to permit the connection of the output end of the modulator to some other component or to a optical fibre.
  • a fibre could be the network fibre 27 having mounted on the free end thereof a connector part 38 which is complementary to the second part 37 of the connector on end wall 36.
  • the fibre 27 may be connected directly to connector part 37.
  • Each connector part 35, 37 has means 39 defining an optical path through the connector part, which means is coupled within the package 19 to a modulator device within the package.
  • such means may comprise optical fibres connected at their inner ends to a wave-guide formed in the modulator device and at their outer ends being held in ferrules mounted within the respective connector parts.
  • the ferrules should be of very high accuracy and concentricity; the respective connector parts also should be of high accuracy and concentricity in order to ensure that when two connector parts are mated, the fibres therewithin align properly with each other, so as to optimise the coupling efficiency of the optical signal.
  • the laser component 10 and the modulator 18 are coupled together by interfitting connector part 17 and connector part 35, respectively on the laser and the modulator, as shown in Figure 4.
  • the connector parts are configured such that the optical fibres within the connector parts are properly aligned and abutting, with accurate rotational alignment as described above.
  • the coupled components 10 and 18 are positioned on the card at the required locations and connected thereto, both mechanically by fastenings passing through holes 12 and 20 and electrically by soldering of the leads 13 and 21 to the respective tracks. It will be appreciated that these actions maybe completed on an automatic basis by machinery, since no fibre handling or management is required.
  • FIGs 5 and 6 there are shown two possible two- part connector designs allowing the direct connecting of two components.
  • like parts with those described above are given like reference characters and will not be described again here.
  • the one and other connector parts 32 and 35 are formed complementarily, the one part being of male form and the other part of female form, so that the parts may be mated together in a closely interfitting manner.
  • the connector parts are manufactured to very tight tolerances with high concentricity, to ensure accurate coupling.
  • Figure 5 shows diagrammatically a laser device 41 mounted within package 11 , but not the electrical connections thereto from the leads 13.
  • Light emitted from the laser device 41 is generally somewhat elliptical and passes along an optical path to the one connector part 32, there being a lens train 42 in that path to perform collimation of the beam and circularisation thereof.
  • the circularisation converts the elliptical output to allow a high coupling efficiency to be achieved to an optical fibre in the second optical component, as the circularisation increases the overlap integral between the laser output, transformed by the lenses, to the circularly symmetric mode profile of the fibre.
  • Collimation is performed by a conventional lens and the circularisation by one or more further lenses which may include a plano-convex lens which magnifies in only one plane or an aspheric lens which provides non-equal magnification in two planes mutually at right angles.
  • the optical train may include additional elements 43, such as an optical isolator and/or a polariser.
  • the collimated output is fed through an aperture in the package wall 31 provided with a window for example of a sapphire plate (not shown), to allow the laser device to be hermetically sealed within the package.
  • a window for example of a sapphire plate (not shown)
  • the laser device On the outside of the package, in register with the window in the end wall 31 , is attached for example by welding or soldering the one part 32 of the two-part connector.
  • a substantially spherical lens 44 mounted within the other part 35 of the connector is a substantially spherical lens 44, arranged to collect the collimated expanded beam passing through the one connector part and to focus that beam on to the end of a fibre 45 held clamped within a ferrule 46 fitted within the other connector part 35.
  • the other end of the fibre 45 couples to a wave guide in the modulator device 18, in a manner well understood in the art, with the fibre curved through a shallow radius as shown in Figure 5.
  • the ferrule 46 seals to the other connector part 35 such that the package 19 may be hermetically sealed. Any thermal mismatch between the modulator device 18 and its package 19 may be accommodated by the fibre either straightening slightly or increasing its curvature slightly, as appropriate.
  • the optical modulator 18 together with its package 19 is provided with a further connector part in order to take the modulated optical signal out of the package and to some other component or fibre.
  • This further connector part is of the same construction as the other connector part 35 of the component.
  • the further connector part may be of the same design of the one connector part 32 of the first component 10. In this case, various components may be connected serially so permitting the assembly of a number of components in a simple and rapid manner.
  • the first component 10 has been described as a laser. This invention is not limited to the first component being a laser: the first component could be some other form of optical emitter, such as the downstream end of a modulator from which an optical signal issues.
  • the two connector parts may include interfitting lugs and recesses or other means whereby the two connector parts may be coupled only in a fixed and predefined rotational alignment. In this way, should the optical signal from the first component be polarised, the polarisation axes of the signal being passed through the connector will be maintained.
  • an expanded beam of diameter typically in the region of 100 ⁇ m to 1000 ⁇ m.
  • the expanded beam is then passed through additional elements 43, such as an optical isolator and/or a polariser.
  • the collimated beam passes through an aperture in the package wall 31 provided with a window for example of a sapphire plate (not shown) to allow hermetic sealing of the package.
  • a spherical lens 48 is located within the one connector part 32, immediately adjacent the window.
  • An optical fibre stub 49 has its two end portions carried by respective ferrules 50 and 51 , which ferrules are mounted co- axially within the one connector part 32. Prior to fitting the ferrules into the connector part, the end planes of the stub 49 are cut and polished in the usual way known in the art, in connection with termination techniques for optical fibres.
  • the lens 48, fibre stub 49 and ferrules 50 and 51 are arranged so that the lens focuses the received collimated expanded beam into the adjacent end of the fibre stub, and the other end of the fibre stub is at the end of the one connector part 32.
  • a fibre 54 mounted within the other part 35 of the connector on the second component is a fibre 54 held clamped within a ferrule 55 fitted co-axially within the other connector part 35.
  • the other end of the fibre 55 couples to a wave guide in the modulator device 19, in a manner well understood in the art, with the fibre curved through a shallow radius as shown in Figure 6.
  • the ferrule 55 seals to the other connector part 35 such that the package
  • any thermal mismatch between the modulator device 18 and its package 19 may be accommodated by the fibre either straightening slightly or increasing its curvature slightly, as appropriate.
  • a further connector part of the same construction as the other connector part 32 of the component may be provided to take the modulated opticals signal out of package 19.
  • the further connector part may be of the same design of the one connector part 32 of the first component 10.
  • various components may be connected serially so permitting the assembly of a number of components in a simple and rapid manner.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

La présente invention concerne un composant optique destiné à être incorporé dans un réseau de transmission optique, lequel composant comprend un boîtier (11) à l'intérieur duquel est monté un dispositif optique. Une partie (32) d'un connecteur en deux parties est montée sur une paroi (31) du boîtier et comprend un moyen (33) définissant un guide optique au travers de cette partie, lequel moyen définissant un guide optique se trouve en communication optique avec le dispositif situé à l'intérieur du boîtier. La première partie (32) du connecteur est configurée de manière qu'elle se connecte mécaniquement et optiquement à l'autre partie (32) du connecteur en deux parties, laquelle autre partie (35) présente une forme complémentaire à celle de la première partie (32) et est montée sur une paroi (34) du boîtier d'un autre composant optique (19).
PCT/GB1998/000313 1997-02-03 1998-02-02 Composants optiques Ceased WO1998034144A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9702123.2A GB9702123D0 (en) 1997-02-03 1997-02-03 Optical components
GB9702123.2 1997-02-03

Publications (1)

Publication Number Publication Date
WO1998034144A1 true WO1998034144A1 (fr) 1998-08-06

Family

ID=10806974

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/000313 Ceased WO1998034144A1 (fr) 1997-02-03 1998-02-02 Composants optiques

Country Status (2)

Country Link
GB (1) GB9702123D0 (fr)
WO (1) WO1998034144A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2822246A1 (fr) * 2001-03-15 2002-09-20 Opsitech Optical Sys On A Chip Procede de fabrication d'un boitier optique et dispositif opto-electronique
WO2018136320A1 (fr) * 2017-01-20 2018-07-26 Corning Research & Development Corporation Ensembles sources de lumière et systèmes et procédés à homogénéisation de mode
US10101553B2 (en) 2015-05-20 2018-10-16 Corning Optical Communications LLC Traceable cable with side-emitting optical fiber and method of forming the same
US10101545B2 (en) 2015-10-30 2018-10-16 Corning Optical Communications LLC Traceable cable assembly and connector
US10107983B2 (en) 2016-04-29 2018-10-23 Corning Optical Communications LLC Preferential mode coupling for enhanced traceable patch cord performance
US10185111B2 (en) 2016-04-08 2019-01-22 Corning Optical Communications LLC Traceable end point cable assembly
US10222561B2 (en) 2016-12-21 2019-03-05 Corning Research & Development Corporation Light launch device for transmitting light into a traceable fiber optic cable assembly with tracing optical fibers
US10228526B2 (en) 2015-03-31 2019-03-12 Corning Optical Communications LLC Traceable cable with side-emitting optical fiber and method of forming the same
US10338317B2 (en) 2015-07-17 2019-07-02 Corning Optical Communications LLC Systems and methods for traceable cables
US10379309B2 (en) 2014-11-18 2019-08-13 Corning Optical Communications LLC Traceable optical fiber cable and filtered viewing device for enhanced traceability
US10534135B2 (en) 2015-07-17 2020-01-14 Corning Optical Communications LLC Systems and methods for tracing cables and cables for such systems and methods
US10539747B2 (en) 2017-12-05 2020-01-21 Corning Research & Development Corporation Bend induced light scattering fiber and cable assemblies and method of making
US10539758B2 (en) 2017-12-05 2020-01-21 Corning Research & Development Corporation Traceable fiber optic cable assembly with indication of polarity

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EP0302617A1 (fr) * 1987-08-06 1989-02-08 Amp Incorporated Moyens de couplage opto-électrique
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US5253311A (en) * 1992-11-02 1993-10-12 The United States Of America As Represented By The Secretary Of The Army Device and method for performing optical coupling without pigtails
US5309537A (en) * 1993-04-05 1994-05-03 Motorola, Inc. Optoelectronic coupling device and method of making
US5400423A (en) * 1993-09-07 1995-03-21 Motorola Molded star coupler and method of making same

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FR2305747A1 (fr) * 1975-03-28 1976-10-22 Thomson Csf Dispositif de connexion detachable pour liaisons opto-electriques par faisceaux de fibres optiques
EP0302617A1 (fr) * 1987-08-06 1989-02-08 Amp Incorporated Moyens de couplage opto-électrique
US5125054A (en) * 1991-07-25 1992-06-23 Motorola, Inc. Laminated polymer optical waveguide interface and method of making same
JPH05251744A (ja) * 1992-03-06 1993-09-28 Nec Corp 発光モジュールの製造方法
US5253311A (en) * 1992-11-02 1993-10-12 The United States Of America As Represented By The Secretary Of The Army Device and method for performing optical coupling without pigtails
US5309537A (en) * 1993-04-05 1994-05-03 Motorola, Inc. Optoelectronic coupling device and method of making
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