WO2002103403A2 - Procede de realisation d'un reseau de fibres optiques ordonne et agencement de connecteurs pour un tel reseau - Google Patents

Procede de realisation d'un reseau de fibres optiques ordonne et agencement de connecteurs pour un tel reseau Download PDF

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Publication number
WO2002103403A2
WO2002103403A2 PCT/US2001/043222 US0143222W WO02103403A2 WO 2002103403 A2 WO2002103403 A2 WO 2002103403A2 US 0143222 W US0143222 W US 0143222W WO 02103403 A2 WO02103403 A2 WO 02103403A2
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
alignment
array
optic
mth
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/US2001/043222
Other languages
English (en)
Other versions
WO2002103403A3 (fr
Inventor
Armin Plichta
Peter Brix
Klaus Gerstner
Dirk Schlatterbeck
Michael Weisser
Martin Sommer
Robert A. Rubino, Jr.
Jeffrey A. Bonja
Richard Strack
Inka Henze
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.)
Schott Glas Carl-Zeiss-Stiftung Trading As Schott Glas And Carl-Zeiss-Stiftung
Schott AG
Carl Zeiss AG
Original Assignee
Schott Glas Carl-Zeiss-Stiftung Trading As Schott Glas And Carl-Zeiss-Stiftung
Carl Zeiss AG
Schott Glaswerke 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 Schott Glas Carl-Zeiss-Stiftung Trading As Schott Glas And Carl-Zeiss-Stiftung, Carl Zeiss AG, Schott Glaswerke AG filed Critical Schott Glas Carl-Zeiss-Stiftung Trading As Schott Glas And Carl-Zeiss-Stiftung
Priority to AU2001297945A priority Critical patent/AU2001297945A1/en
Publication of WO2002103403A2 publication Critical patent/WO2002103403A2/fr
Publication of WO2002103403A3 publication Critical patent/WO2002103403A3/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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/04—Re-forming tubes or rods
    • C03B23/047—Re-forming tubes or rods by drawing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3881—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using grooves to align ferrule ends
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
    • G02B6/3861—Adhesive bonding

Definitions

  • the present invention relates to methods of assembling and aligning optic fibers into two-dimensional arrays, and a connector arrangement that can be utilized with such arrays.
  • Optic signal transmission for example for transferring digital data within or between computers in a high speed computing system or for other applications, such as digital communications, requires precise alignment of the optic fibers with the signal emitters and detectors in order to avoid loss of light and low coupling efficiency. It was previously known to manually align and bond each fiber in position. However, this was an expensive and time-consuming process that was only commercially feasible for a small number of optic fibers, and is too costly to scale up to the larger arrays currently being contemplated and used for optical data transfer.
  • One known system which attempts to address this utilizes perforated guide and securing plates having a desired array of apertures formed by photolithographic means.
  • the apertures are arranged to match a desired emitter or detector array or may be used on opposing sides of a mating coupling for a bundled array of optic fibers.
  • each fiber must be individually inserted into an aperture and secured, and photo-lithographic etching processes produce funnel shaped holes, due to the longer etchant exposure time near the surface of the plate. This allows the fiber ends to be inserted at an angle, instead of normal to the face of such plates, unless multiple plates are utilized, which increases the production costs and can make assembly more difficult since the fiber ends must each be inserted through two aligned openings.
  • the assembled array of ends is preferably mounted in a coupling body, which can then be connected to an opposing coupling half, or can be connected directly to an emitter or detector array.
  • Such connections require precise alignment in order to avoid coupling losses.
  • This alignment is generally done utilizing pins on one side, with complementary openings in the other side which must be precisely sized and aligned in order to accurately align the optic fiber ends, which can be as small as 10 microns in diameter.
  • This type of arrangement is prone to damage and wear with repeated use, and often results in poorer alignment and optical signal losses increasing due to coupling inefficiencies. This is especially true for the common arrangement which utilizes metallic alignment pins arranged on the coupling body which are inserted into holes in a polymer or silicon based substrate.
  • the present invention provides a method of forming an ordered optic fiber array.
  • the method includes the steps of (a) forming an array of holes in a glass block based on an enlarged pattern of a desired precision array, (b) heating and drawing the glass block from a first end thereof, reducing an outside dimension of the glass block and the array of holes to a predetermined size for the precision array to form an alignment block body, (c) separating a portion of the alignment block body to form at least one fiber alignment plate, and (d) attaching optic fibers in the array of holes in the fiber alignment plate.
  • the invention provides a connector arrangement for optic fibers.
  • the connector arrangement includes first and second fiber alignment plates, with at least one of the first and second fiber alignment plates being located on a floating mount. At least a first type of alignment structure is located on the first fiber alignment plate, and a second complementary alignment structure is located on the second fiber alignment plate.
  • the invention provides a method of assembling an ordered optic fiber array.
  • Figure 1 is a glass block having an array of holes based on an enlarged pattern of a desired precision array used for forming an ordered optic fiber array in accordance with the present invention.
  • Figure 2 is a schematic diagram of the glass block of Figure 1 being drawn to form an alignment block body.
  • Figure 3 is a cross-sectional view taken along lines 3-3 in Figure 2 showing a separated portion of the alignment block body used to form one fiber alignment plate.
  • Figure 4 is a cross-sectional view through the fiber alignment plate of
  • Figure 3 illustrating the insertion of an optic fiber into one of the holes in the array.
  • Figure 5 is a cross-sectional view of first and second fiber alignment plates in accordance with a second embodiment of the invention used for making a connection arrangement.
  • Figure 6 is a perspective view showing an alternate embodiment of the alignment features used on the fiber alignment plates.
  • Figure 7 is a perspective view of a second alternate embodiment of the alignment structures used on the fiber alignment plates.
  • Figure 8 is a perspective view of a computer controlled manipulator for placing optic fibers on a substrate or alignment plate.
  • Figure 9 is a cross-sectional view of fibers bonded on a substrate being held in position relative to one another via a cast adhesive or potting compound.
  • Figure 1 illustrates a glass block 10 having an array of holes 12 formed therein.
  • the holes 12 are arranged in a desired pattern which is an enlarged version of a desired precision array holes 16 in a fiber alignment plate 14, as shown in Figure 3.
  • the array of holes 12 in the glass block 10 is preferably formed by boring utilizing a multi-spindle machine. However, the array may be formed by precision boring each hole 12 individually while the glass block 10 is mounted on a precision X-Z table and is indexed to each individual hole position in the array.
  • the glass block 10 is heated and drawn in a glass drawing tower. At least a portion of the glass block 10 to be drawn is heated utilizing heaters 20, and the block 10 is than drawn to reduce an outside dimension of the glass block 10 and the array of holes to a predetermined size for the precision array in order to form an alignment block body 18.
  • the draw can be done as a single draw, or in a multi-draw process.
  • a portion of the alignment block body 18 is separated to form at least one fiber alignment plate 14, as shown in Figure 3.
  • the precision drawing process produces an alignment block body which can be separated into many fiber alignment plates having nearly identical precision arrays of holes 16 formed therein with the desired spacing and tolerance. Due to the precise drawing process, tolerances of +/- 0.0001 in the array of holes 12 in the glass block 10 are also reduced along with the relative size and spacing of the holes, so that tolerances on the order of a few microns can be obtained. Additionally, the sides of the holes 16 in the precision array have straight side walls, which eliminates the problem of the funnel shaped holes produced by photo lithographic etching methods.
  • optic fibers 22 are inserted in the precision array of holes 16 in the fiber alignment plate 14. This can be done manually or using an automated insertion method. Once the optic fibers 22 are inserted into the holes 16 of the fiber alignment plate 14 and held in position, for example with a UV curable adhesive, to form the array, the free end is preferably ground and polished for low loss insertion and transmission of optic signals.
  • the alignment plate 14 provides the advantage of holding all of the fiber ends generally normal to the surface of the plate due to the straight sided holes 16 in the precision array. This provides an improvement over the prior known alignment plates, which required two separate plates in order to accurately hold the fibers.
  • first and second fiber alignment plates 32 and 34 are provided, with at least one of the first and second fiber alignment plates 32, 34 being located on a floating mount 36.
  • the fiber alignment plates 32, 34 may be formed in the manner described above in connection with the fiber alignment plate 16, which has preferably been machined or etched in order to form an alignment structure.
  • the first fiber alignment plate 32 includes a first type of alignment structure 38, and a second complementary alignment structure 40 is located on the second fiber alignment plate 34.
  • the first type of alignment structure 38 may be a protrusion and the second type of alignment structure 40 may be a matching opening.
  • first and second alignment structures 38, 40 may be used on each of the first and second fiber alignment plates 32, 34 such that the first fiber alignment plate 32 includes a protrusion 38 and an opening 40' and the second fiber alignment plate 34 includes a complementary opening 40 and a complementary protrusion 38'.
  • the alignment structures 38, 40 are preferably produced by a semiconductor lithographic process on the fiber alignment plates 32, 34.
  • the array of holes 42 which receive the optic fibers 22 may also be produced by lithographic means or by the method as described above.
  • the fiber alignment plates 32, 34 could be in the form of substrates without fiber receiving holes to which the ends of optic fibers arranged in an ordered array have been bonded.
  • the first fiber alignment plate 32 is located on the floating mount 36, and the floating mount is formed by an elastic material located in a plug body 44.
  • the elastic material may be a synthetic or natural rubber or any other suitable elastic material.
  • the elastic material allows movement of at least 10 microns in the X (left-right) and Z (into and out of paper) directions. Additionally, the elastic material allows and angular displacement of up to 5 ° about the Y (vertical) axis.
  • the elastic material used to form the floating mount 36 is also compressible and exerts pressure against the other of the first and second alignment plates 32, 34 which does not include the floating mount 36 in order to provide firm contact between the alignment plates 32, 34 in order to provide a low loss connection.
  • FIG. 6 an alternate alignment structure is shown on the first and second fiber alignment plates 32, 34.
  • Two V-grooves 48, 50 are formed in the face of the first fiber alignment plate 32.
  • Three corresponding protrusions 52, 54, 56 are located in the second fiber alignment plate 34. These protrusions 52, 54, 56 provide the required X-Z alignment for the fiber alignment plates 32, 34 so that the corresponding ordered optic fiber arrays connected to the alignment plates 32, 34 are aligned.
  • first and second type of alignment structures is shown on the first and second fiber alignment plates 32, 34.
  • the first type of alignment structure located on the first fiber alignment plate 32 includes a centrally located depression 58 and a radially extending groove 60, which preferably extends in the X direction.
  • the second alignment structure on the second fiber alignment plate 34 includes two protrusions 62 and 64.
  • the central protrusion 62 centers the first and second fiber alignment plates 32, 34 with respect to each other, and the second protrusion 64 provides the correct angular alignment of the fiber alignment plates 32, 34.
  • the first and second types of alignment structures as noted above are intended to merely exemplary, and those skilled in the art will recognize that other types of fiber alignment structures may be provided, if desired.
  • One or both of the fiber alignment plates 32, 34 may be mounted in plug bodies in order to form two mating plug halves which can be utilized to form the connector arrangement.
  • one of the first and second fiber alignment plates 32, 34 may be a faceplate that does not include any holes. The faceplate would be mounted directly on an array of emitters or detectors and allow coupling of an ordered optic fiber array utilizing a fiber alignment plate 32, which is preferably mounted on a floating mount 36.
  • a computer controlled manipulator 110 which preferably allows movement in the X, Y and Z directions is utilized.
  • the computer controlled manipulator 110 has a holder 112 which can hold an optic fiber 114 at the end of a manipulator arm 116.
  • the optic fiber 114 is positioned with the computer controlled manipulator 110 so that an end 118 thereof contacts a substrate 120 at a defined location.
  • An adhesive is activated between the end 118 of the optic fiber 114 and the substrate 120.
  • the substrate 120 comprises a faceplate which is mounted over a detector array having a plurality of optic signal detectors located in the desired positions.
  • each optic fiber 114 is connected to an optic signal emitter 130 which sends an optic signal toward the substrate 120 through the end 118 of the optic fiber. While gross positioning down to ten thousandths of an inch can be achieved using the computer controlled manipulator 110 based on a predetermined positioning program, the exact position of the optic fiber end 118 can be adjusted through a feedback system by sensing the optic signal strength of the signal from the optic signal generator 130 utilizing the array of detectors 140 upon which the substrate 120 is positioned.
  • the adhesive used for bonding the ends 118 of the optic fibers 114 to the substrate 120 may be placed on the ends of the optic fiber 114 or may be placed upon the face of the substrate 120.
  • the adhesive may be UV curable or may be a contact type adhesive which adheres upon contact.
  • the adhesive may be applied by an applicator connected to the manipulator arm which places a drop of adhesive at the edge of the end 118 where it contacts the substrate 120.
  • adhesive is applied utilizing a separate applicator, it is applied symmetrically on opposing sides of the optic fiber 114 to ensure that the optic fiber is not tilted by the adhesive curing on one side only of the optic fiber end 118.
  • the adhesive may be activated by directing UV light through the optic fiber 114 using the optic signal generator 130 after the optic fiber 114 is positioned.
  • an array may be formed utilizing the substrate, as shown in
  • the ends of the optic fibers 114 are affixed together utilizing an adhesive or a potting compound 132 which is poured or molded around the optic fibers 114 above the substrate 120.
  • the substrate 120 may be removed and the ends of the optic fibers cut and polished in order to form an ordered optic fiber array.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

La présente invention concerne un procédé permettant la réalisation d'un réseau de fibres optiques ordonné par la formation d'un réseau d'orifices dans un bloc de verre sur la base d'un modèle agrandi d'un réseau avec une précision souhaitée, le chauffage et l'étirage du bloc de verre à partir d'une première extrémité de celui ci, et la réduction d'une dimension extérieure du bloc de verre et du réseau d'orifices à une dimension prédéterminée pour le réseau de précision. On sépare une portion du corps de bloc d'alignement pour former au moins une plaque d'alignement de fibres, et on fixe des fibres optiques. Cela peut être utilisé dans un agencement de connecteurs pour fibres optiques présentant des première et deuxième plaques d'alignement, avec au moins une des première et deuxième plaques d'alignement disposée sur un montage flottant. Les structures d'alignement sont disposées sur la plaque d'alignement pour un alignement précis. Un autre procédé d'assemblage d'un réseau de fibres optiques ordonné peut être utilisé dans lequel les fibres sont positionnées au moyen d'un manipulateur piloté par ordinateur et collées au substrat.
PCT/US2001/043222 2000-11-16 2001-11-16 Procede de realisation d'un reseau de fibres optiques ordonne et agencement de connecteurs pour un tel reseau Ceased WO2002103403A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001297945A AU2001297945A1 (en) 2000-11-16 2001-11-16 Method of forming an ordered optic fiber array and connector arrangement for same

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US24918900P 2000-11-16 2000-11-16
US24919700P 2000-11-16 2000-11-16
US24919600P 2000-11-16 2000-11-16
US24919500P 2000-11-16 2000-11-16
US60/249,196 2000-11-16
US60/249,195 2000-11-16
US60/249,189 2000-11-16
US60/249,197 2000-11-16

Publications (2)

Publication Number Publication Date
WO2002103403A2 true WO2002103403A2 (fr) 2002-12-27
WO2002103403A3 WO2002103403A3 (fr) 2003-04-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/043222 Ceased WO2002103403A2 (fr) 2000-11-16 2001-11-16 Procede de realisation d'un reseau de fibres optiques ordonne et agencement de connecteurs pour un tel reseau

Country Status (2)

Country Link
AU (1) AU2001297945A1 (fr)
WO (1) WO2002103403A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102062897A (zh) * 2010-11-03 2011-05-18 北京大学 光纤阵列固定器件及其制备方法
EP2008137B1 (fr) * 2006-02-28 2014-01-08 Corning Incorporated Systemes et procedes de micropositionnement a base de verre
CN105301700A (zh) * 2015-11-27 2016-02-03 宁波市樱铭电子科技有限公司 一种光纤纤芯对接装置
US11860418B2 (en) 2021-07-26 2024-01-02 Corning Research & Development Corporation Detachable connectors for fusion splice high fiber count applications

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105301706B (zh) * 2015-11-27 2017-04-19 宁波市樱铭电子科技有限公司 一种光纤纤芯对接结构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1309240C (fr) * 1987-03-20 1992-10-27 Minoru Seino Methode de connexion de fibres optiques
SE9402082L (sv) * 1994-06-14 1995-12-15 Ericsson Telefon Ab L M Optisk miniatyrkapsel
JP3085440B2 (ja) * 1994-09-12 2000-09-11 株式会社日立製作所 光アッセンブリの製造方法
EP0713111A1 (fr) * 1994-11-15 1996-05-22 The Whitaker Corporation Connecteur étanché à fibres optiques multiposition
US5742720A (en) * 1995-08-30 1998-04-21 Matsushita Electric Industrial Co., Ltd. Optical coupling module and method for producing the same
US6243520B1 (en) * 1999-08-16 2001-06-05 Schott Fiber Optics, Inc. Optical fiber bundle having an aligned optical fiber array and method of fabricating the same
US6434314B1 (en) * 2001-03-13 2002-08-13 3M Innovative Properties Company Force equalizing filament clamp

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2008137B1 (fr) * 2006-02-28 2014-01-08 Corning Incorporated Systemes et procedes de micropositionnement a base de verre
CN102062897A (zh) * 2010-11-03 2011-05-18 北京大学 光纤阵列固定器件及其制备方法
CN105301700A (zh) * 2015-11-27 2016-02-03 宁波市樱铭电子科技有限公司 一种光纤纤芯对接装置
US11860418B2 (en) 2021-07-26 2024-01-02 Corning Research & Development Corporation Detachable connectors for fusion splice high fiber count applications

Also Published As

Publication number Publication date
AU2001297945A1 (en) 2003-01-02
WO2002103403A3 (fr) 2003-04-24

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