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WO2014112285A1 - Dispositif de connecteur optique - Google Patents

Dispositif de connecteur optique Download PDF

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Publication number
WO2014112285A1
WO2014112285A1 PCT/JP2013/084101 JP2013084101W WO2014112285A1 WO 2014112285 A1 WO2014112285 A1 WO 2014112285A1 JP 2013084101 W JP2013084101 W JP 2013084101W WO 2014112285 A1 WO2014112285 A1 WO 2014112285A1
Authority
WO
WIPO (PCT)
Prior art keywords
ferrule
lens
exit
entrance
optical fiber
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/JP2013/084101
Other languages
English (en)
Japanese (ja)
Inventor
博志 立石
那倉　裕二
加藤　清
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.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries 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 Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Publication of WO2014112285A1 publication Critical patent/WO2014112285A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B6/26—Optical coupling means
    • G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre 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
    • G02B6/26—Optical coupling means
    • G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
    • G02B6/322—Optical coupling means having lens focusing means positioned between opposed fibre ends and having centering means being part of the lens for the self-positioning of the lightguide at the focal point, e.g. holes, wells, indents, nibs

Definitions

  • the present invention relates to an optical connector device in which ferrules having lenses are arranged to face each other.
  • Patent Document 1 discloses a configuration in which a lens is provided on the tip side of a ferrule to which an optical fiber is fixed (hereinafter sometimes referred to as a ferrule with a lens).
  • An optical connector device in which such a ferrule with a lens is used has a collimator lens in which the outgoing side (upstream side) ferrule collimates the light emitted from the optical fiber, and the incident side (downstream side) ferrule has A structure having a focusing lens that focuses the parallel light toward the end of the optical fiber is generally used.
  • the entrance-side ferrule 91 to which the entrance-side optical fiber 91f is fixed and the exit-side ferrule 92 to which the exit-side optical fiber 92f is fixed approach each other by the biasing members 91s and 92s.
  • the distance between the lenses 910 and 920 depends on the positioning accuracy of the ferrules 91 and 92 and the stopper portions 911 and 921 and the dimensional accuracy in the longitudinal direction of the sleeve member 93 (the dimensional change due to deformation due to heat or the like). In other words, the distance between the lenses 910 and 920 in the direction of the optical axis X varies.
  • the problem to be solved by the present invention is to provide an optical connector device in which the relative positioning accuracy of one lens and the other lens (one ferrule and the other ferrule) in the optical axis direction is high. It is in.
  • an optical connector device is a ferrule to which an emission side optical fiber is fixed, and has an emission side lens through which light emitted from the emission side optical fiber passes at the tip.
  • a ferrule to which a side ferrule and an incident side optical fiber disposed opposite to the output side ferrule are fixed, and an incident side that condenses the light that has passed through the output side lens at the tip thereof onto the incident side optical fiber An entrance-side ferrule having a lens, and at least one of the tip of the exit-side ferrule and the tip of the entrance-side ferrule is in contact with the counterpart ferrule, and the exit-side lens and the entrance side in the optical axis direction Contact projections for setting the distance between the lenses are formed.
  • the contact protrusion may be formed so as to surround the exit-side lens or the entrance-side lens, and the entire circumference thereof may be configured to contact the counterpart ferrule.
  • the exit side ferrule and the entrance side ferrule may have the same shape.
  • At least one of the ferrules is provided with a contact protrusion that contacts the counterpart ferrule. That is, since the contact protrusion is provided at the tip of the ferrule on which the lens is provided, the relative positioning accuracy of one lens and the other lens (one ferrule and the other ferrule) in the optical axis direction is high. That is, the variation in the distance between lenses can be reduced.
  • the contact protrusion is shaped to surround the lens and the entire circumference is in contact with the mating connector, the tip of one ferrule and the tip of the other ferrule are in contact with each other in the entire circumferential direction. Therefore, not only the positioning accuracy in the optical axis direction is improved, but also the optical axis shift between the output side ferrule (output side lens) and the input side ferrule (incident side lens) (the other ferrule is inclined with respect to one ferrule). Can also be prevented. In addition, since the lens is positioned in the space surrounded by the contact protrusions, it is possible to prevent loss due to dust and the like adhering to the lens.
  • the outgoing side ferrule and the incoming side ferrule can have the same shape. That is, it can be set as the structure which controls the distance between lenses, when both ferrules have a contact protrusion and the contact protrusions contact. In this way, it contributes to cost reduction.
  • An optical connector device 1 according to an embodiment of the present invention is for optically connecting optical fibers that transmit light (laser light) signals, and includes an output side ferrule 2 and an incident side. A ferrule 3 is provided.
  • the exit-side ferrule 2 is a member formed in a substantially cylindrical shape as a whole, and has a fiber fixing portion 21 and a light transmitting portion 22.
  • the fiber fixing portion 21 is a portion to which an optical fiber on the upstream side in the optical signal transmission path (hereinafter referred to as an emission side optical fiber 2f) is fixed.
  • the method of fixing the emission side optical fiber 2f is not limited to a specific method. For example, a known method in which the emission side optical fiber 2f passed through the through hole 211 formed in the fiber fixing portion 21 is fixed by an adhesive can be mentioned.
  • the axis of the exit side optical fiber 2f formed on the fiber fixing portion 21 coincides with the optical axis X of the exit side lens 222 described later.
  • An engagement protrusion 212 that protrudes toward the incident-side ferrule 3 side is formed in the center of the distal end side of the fiber fixing portion 21.
  • the distal end surface of the emission side optical fiber 2f fixed along the optical axis X is flush with the distal end surface of the engagement protrusion 212. That is, the distal end surface of the emission side optical fiber 2f is exposed at the distal end surface of the fiber fixing portion 21 (engagement protrusion 212).
  • An urging member stopper 213 that protrudes in a radial manner in the radial direction is provided outside the rear end side of the fiber fixing portion 21.
  • the connection structure between the fiber fixing portion 21 and the biasing member stopper portion 213 is not limited to a specific structure.
  • the fiber fixing portion 21 and the biasing member stopper portion 213 may be formed integrally.
  • the light transmitting portion 22 is a portion formed of a light transmitting material (a material that transmits a laser beam that transmits a signal).
  • a light transmitting material a material that transmits a laser beam that transmits a signal.
  • an engagement recess 221 that is recessed toward the incident side ferrule 3 side is formed.
  • the engagement protrusions 212 of the fiber fixing portion 21 are fitted into the engagement recesses 221 so that they are integrated.
  • an exit side lens 222 that is a convex lens toward the entrance side ferrule 3 is formed.
  • the optical axis X of the exit side lens 222 coincides with the axis of the exit side optical fiber 2f.
  • the light (laser light) emitted from the emission side optical fiber 2 f becomes divergent light having a predetermined divergence angle (expansion angle), and the divergent light passes through the emission side lens 222.
  • the shape of the exit side lens 222 and the distance from the distal end of the exit side optical fiber 2f to the exit side lens 222 are set so that divergent light that has passed through the exit side lens 222 becomes parallel light. That is, the exit side lens 222 is a collimate lens designed so that the light emitted from the exit side optical fiber 2f becomes parallel light.
  • an emission side contact projection 223 is formed on the outside of the emission side lens 222 in the light transmission portion 22.
  • the exit side contact protrusion 223 of the present embodiment has a cylindrical shape surrounding the exit side lens 222.
  • the emission side contact protrusion 223 protrudes from the tip of the emission side lens 222.
  • the tip of the exit-side contact projection 223 is positioned closer to the entrance-side ferrule 3 than the tip of the exit-side lens 222.
  • the distance between the tip of the exit side lens 222 and the tip of the exit side contact projection 223 (the length of the exit side contact projection 223) is an element that determines the distance between the exit side lens 222 and the entrance side lens 322. .
  • the incident side ferrule 3 also has a fiber fixing portion 31 and a light transmitting portion 32.
  • the fiber fixing portion 31 is a portion to which a downstream optical fiber (hereinafter referred to as an incident side optical fiber 3f) in the optical signal transmission path is fixed.
  • the method of fixing the incident side optical fiber 3f is not limited to a specific method. For example, a known method in which the emission side optical fiber passed through the through-hole 311 formed in the fiber fixing portion 31 is fixed with an adhesive.
  • the axis of the incident side optical fiber 3f fixed to the fiber fixing portion 31 coincides with the optical axis of the incident side lens 322 described later.
  • An engagement protrusion 312 that protrudes toward the exit-side ferrule 2 is formed at the center of the distal end side of the fiber fixing portion 31.
  • the front end surface of the incident-side optical fiber 3f fixed along the optical axis X is flush with the front end surface of the engagement protrusion 312. That is, the distal end surface of the incident side optical fiber 3f is exposed at the distal end surface of the fiber fixing portion 31 (engagement protrusion 312).
  • An urging member stopper portion 313 that protrudes in the radial direction in a bowl shape is provided on the outer side of the rear end side of the fiber fixing portion 31.
  • the shape of the urging member stopper 313 itself is an annular shape.
  • the connection structure between the fiber fixing portion 31 and the biasing member stopper portion 313 is not limited to a specific structure.
  • the fiber fixing portion 31 and the biasing member stopper portion 313 may be formed integrally.
  • the light transmitting portion 32 is a portion formed of a light transmitting material (a material that transmits a laser beam that transmits a signal).
  • a light transmitting material a material that transmits a laser beam that transmits a signal.
  • an engagement recess 321 that is recessed toward the emission side ferrule 2 side is formed.
  • An incident side lens 322 that is a convex lens toward the emission side ferrule 2 side is formed at the tip of the light transmission part 32.
  • the optical axis X of the incident side lens 322 coincides with the axis of the incident side optical fiber 3f.
  • the incident side lens 322 is a condensing lens that is set so that parallel light propagating in the space between the output side ferrule 2 and the incident side ferrule 3 is condensed at the tip of the incident side optical fiber 3f. .
  • an incident side contact protrusion 323 is formed outside the incident side lens 322 in the light transmitting portion 32.
  • the incident side contact protrusion 323 of this embodiment has a cylindrical shape surrounding the incident side lens 322.
  • the incident side contact protrusion 323 protrudes from the tip of the incident side lens 322.
  • the tip of the incident-side contact protrusion 323 is positioned closer to the exit-side ferrule 2 side than the tip of the incident-side lens 322.
  • the distance between the distal end of the incident side lens 322 and the distal end of the incident side contact projection 323 (the length of the incident side contact projection 323) is an element that determines the distance between the exit side lens 222 and the incident side lens 322. .
  • exit side ferrule 2 and entrance side ferrule 3 are inserted into a cylindrical sleeve member 4.
  • the sleeve member 4 is formed so that its inner diameter is slightly larger than the outer diameters of both ferrules 2 and 3 (so that the inserted ferrule can slide in the optical axis X direction).
  • the exit side ferrule 2 and the entrance side ferrule 3 are inserted so that the exit side lens 222 and the entrance side lens 322 face each other.
  • the length of the sleeve member 4 in the axial direction is the length from the tip of the exit side contact projection 223 in the exit side ferrule 2 to the tip surface of the biasing member stopper 213, and the tip of the entrance side contact projection 323 in the entrance side ferrule 3.
  • To the tip end surface of the biasing member stopper portion 313 is set so as to be shorter.
  • both ferrules 2 and 3 inserted into the sleeve member 4 are urged toward each other by the urging member.
  • the exit-side ferrule 2 has an exit-side biasing member 2 s inserted on the outer peripheral side on the rear end side of the biasing member stopper portion 213, and the entrance-side ferrule 3 has the biasing member stopper portion 313.
  • An incident side biasing member 3s is inserted on the outer peripheral side on the rear end side.
  • the exit-side biasing member 2s pushes the exit-side ferrule 2 toward the entrance-side ferrule 3 through the biasing member stopper 213.
  • the incident-side urging member 3s pushes the incident-side ferrule 3 toward the emission-side ferrule 2 through the urging member stopper 313.
  • the distance between the exit side lens 222 and the entrance side lens 322 in the optical axis X direction is determined by the lengths of both contact protrusions 223 and 323.
  • the distance D between the tip of the exit side lens 222 and the tip of the entrance side lens 322 in the optical axis X direction is the distance d1 between the tip of the exit side lens 222 and the tip of the exit side contact protrusion 223 in the optical axis X direction.
  • the distance between the lenses in the optical axis X direction (the distance between the ferrules) is determined by the length of the contact protrusion provided around the lens. Variation in distance between lenses in the axis X direction is small (positioning accuracy is high). Specifically, like the conventional structure, it is affected by the positional accuracy of the biasing member stopper portions 213 and 313 in both ferrules 2 and 3 and the axial length of the sleeve member 4 (including deformation due to heat). Since it is not a structure, the relative positioning accuracy of the other lens with respect to one lens is high, and the connection loss between both lenses 222 and 322 (occurs when the light propagating through the space between the lenses described above is not completely parallel light). Connection loss is small.
  • the cylindrical incident side contact protrusion 323 and output side contact protrusion 223 are in contact with the other party contact protrusion (the other party ferrule) (the entire circumference is in surface contact). ). Therefore, it is possible to prevent the other ferrule from being inclined (optical axis deviation) with respect to one ferrule. If the gap between the outer peripheral surface of both ferrules 2 and 3 and the inner peripheral surface of the sleeve member 4 is extremely small, such an inclination will not occur, but the dimensional accuracy of each member must be high.
  • the gap between the outer peripheral surface of both ferrules 2 and 3 and the inner peripheral surface of the sleeve member 4 is somewhat larger in this way. Even if it becomes, it can prevent that one ferrule inclines with respect to the other ferrule.
  • both lenses 222 and 322 are located in a space surrounded by both contact protrusions 223 and 323, dust or the like is unlikely to enter the space. Therefore, it is possible to prevent loss due to dust and the like adhering to the lens.
  • the contact location of one contact projection and the other contact projection (the other ferrule) May be a single point.
  • the exit-side ferrule 2 and the entrance-side ferrule 3 in the optical connector device 1 are composed of two parts, the fiber fixing parts 21 and 31 and the light transmission parts 22 and 32. It is not limited to a simple configuration.
  • the structure may be a single part formed entirely of a light transmissive material, or may be a structure composed of three or more parts.
  • both ferrules 2 and 3 have the same shape, they may have different shapes.
  • a structure in which the contact protrusion is provided only on one ferrule may be employed.
  • one ferrule 2a (a ferrule with an incident side fiber 2f fixed as shown may be used, or conversely, a ferrule with an output side fiber 3f fixed.
  • the contact projection 223a of the one ferrule 2a is in contact with the periphery of the lens 322a of the other ferrule 3a, so that the relative positional relationship between the lenses 222a and 322a is established.
  • a determined structure may be adopted.
  • both ferrules 2 and 3 are the same shape like the structure shown in FIG. 1 and FIG. 2, there exists an advantage which contributes to suppression of manufacturing cost.
  • the exit side lens 222 is a collimate lens that makes the light emitted from the entrance side optical fiber 3f parallel light, but is not limited to such a collimate lens.
  • the technical idea of the present invention can be applied to any configuration in which an exit side lens 222 that exhibits some function and an entrance side lens 322 (a lens that focuses light on the entrance side optical fiber 3f) are provided.
  • the structure of the guide (sleeve member 4) for abutting both ferrules 2 and 3 and the structure for biasing both ferrules 2 and 3 are merely examples. That is, the structure of the guide and the urging structure can be appropriately changed without departing from the concept of the present invention.

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

Abstract

L'invention concerne un dispositif de connecteur optique caractérisé par une haute précision lors du positionnement d'une lentille par rapport à une autre lentille (une virole et une autre virole) dans la direction de l'axe optique. Le dispositif de connecteur optique est muni d'une virole (2) côté émission comportant, sur son extrémité, une lentille (222) côté émission à travers laquelle passe une lumière qui est émise en provenance d'une fibre optique (2f) côté émission; et d'une virole (3) côté entrée comportant, sur son extrémité, une lentille (322) côté entrée qui recueille la lumière ayant traversé la lentille (222) côté émission dans une fibre optique (3f) côté entrée. Sur au moins une des extrémités de la virole (2) côté émission et de la virole (3) côté entrée, sont formées des protubérances (223, 323) de contact qui sont en contact avec l'autre virole et qui règlent l'écartement entre la lentille (222) côté émission et la lentille (322) côté entrée dans la direction de l'axe optique.
PCT/JP2013/084101 2013-01-18 2013-12-19 Dispositif de connecteur optique Ceased WO2014112285A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-007063 2013-01-18
JP2013007063A JP2014137530A (ja) 2013-01-18 2013-01-18 光コネクタ装置

Publications (1)

Publication Number Publication Date
WO2014112285A1 true WO2014112285A1 (fr) 2014-07-24

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PCT/JP2013/084101 Ceased WO2014112285A1 (fr) 2013-01-18 2013-12-19 Dispositif de connecteur optique

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JP (1) JP2014137530A (fr)
WO (1) WO2014112285A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018037958A1 (fr) * 2016-08-25 2018-03-01 住友電気工業株式会社 Connecteur optique et procédé de production de connecteur optique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019097911A1 (fr) * 2017-11-20 2019-05-23 ソニー株式会社 Connecteur, ligne de communication, dispositif électronique et système de transmission optique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032722A1 (fr) * 1980-01-17 1981-07-29 GTE Laboratories Incorporated Connecteurs pour fibres optiques
EP0095280A1 (fr) * 1982-05-24 1983-11-30 AMP INCORPORATED (a Pennsylvania corporation) Connecteur de fibres optiques avec une lentille
EP0150860A2 (fr) * 1984-02-02 1985-08-07 Polaroid Corporation Coupleur à fibre optique
JPS61219012A (ja) * 1985-03-23 1986-09-29 Nec Corp 光コネクタ
WO1994000785A2 (fr) * 1992-06-17 1994-01-06 The Whitaker Corporation Manchon terminal de guide d'ondes optique
WO2006104833A1 (fr) * 2005-03-30 2006-10-05 Molex Incorporated Connecteur de fibres optiques avec lentille

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032722A1 (fr) * 1980-01-17 1981-07-29 GTE Laboratories Incorporated Connecteurs pour fibres optiques
EP0095280A1 (fr) * 1982-05-24 1983-11-30 AMP INCORPORATED (a Pennsylvania corporation) Connecteur de fibres optiques avec une lentille
EP0150860A2 (fr) * 1984-02-02 1985-08-07 Polaroid Corporation Coupleur à fibre optique
JPS61219012A (ja) * 1985-03-23 1986-09-29 Nec Corp 光コネクタ
WO1994000785A2 (fr) * 1992-06-17 1994-01-06 The Whitaker Corporation Manchon terminal de guide d'ondes optique
WO2006104833A1 (fr) * 2005-03-30 2006-10-05 Molex Incorporated Connecteur de fibres optiques avec lentille

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018037958A1 (fr) * 2016-08-25 2018-03-01 住友電気工業株式会社 Connecteur optique et procédé de production de connecteur optique

Also Published As

Publication number Publication date
JP2014137530A (ja) 2014-07-28

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