WO2022210371A1 - Optical fiber member, method for manufacturing same, and method for manufacturing optical connector structure - Google Patents

Optical fiber member, method for manufacturing same, and method for manufacturing optical connector structure Download PDF

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Publication number
WO2022210371A1
WO2022210371A1 PCT/JP2022/014467 JP2022014467W WO2022210371A1 WO 2022210371 A1 WO2022210371 A1 WO 2022210371A1 JP 2022014467 W JP2022014467 W JP 2022014467W WO 2022210371 A1 WO2022210371 A1 WO 2022210371A1
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WO
WIPO (PCT)
Prior art keywords
optical fiber
ferrule
optical
housing
manufacturing
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Application number
PCT/JP2022/014467
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French (fr)
Japanese (ja)
Inventor
啓太 清島
一正 岡田
雄一 辻田
Original Assignee
日東電工株式会社
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Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to JP2023511174A priority Critical patent/JPWO2022210371A1/ja
Publication of WO2022210371A1 publication Critical patent/WO2022210371A1/en

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    • 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
    • G02B6/25—Preparing the ends of light guides for coupling, e.g. cutting
    • 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
    • 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

Definitions

  • the present invention relates to an optical fiber member, a method for manufacturing the same, and a method for manufacturing an optical connector structure.
  • An optical connector including an optical fiber, a rear housing, a ferrule, and a front housing is known (see, for example, Patent Document 1 below).
  • Each member provided in the optical connector extends in the front-rear direction.
  • the ferrule is accommodated inside the front end of the front housing.
  • the front housing is attached to the rear housing from the front side.
  • the optical fiber passes through the rear housing, the ferrule, and the front housing in the front-rear direction. The front end of the optical fiber is exposed (protruded) forward from the ferrule.
  • the present invention provides an optical fiber member with excellent optical connection reliability, a method for manufacturing the same, and a method for manufacturing an optical connector structure.
  • the present invention (1) comprises an optical fiber, a fixing member that penetrates the optical fiber and fixes the optical fiber, a ferrule that penetrates the optical fiber and is movable in the longitudinal direction with respect to the optical fiber, a first step of fixing the optical fiber via the fixing member and preparing a housing for accommodating the optical fiber, the ferrule, and the fixing member; a second step of exposing the portion of the optical fiber covered with the ferrule in the first step to cut the portion of the optical fiber; After the second step, the ferrule is moved to one side in the longitudinal direction with respect to the optical fiber so that one end face in the longitudinal direction of the optical fiber is located on the other side in the other longitudinal direction of the one end face in the longitudinal direction of the ferrule, and a third step of covering one longitudinal end face of the optical fiber with the ferrule.
  • the optical connection surface in the second step, can be formed by cutting the portion of the optical fiber covered with the ferrule. Then, in the third step, one longitudinal end surface of the optical fiber, which serves as a connecting surface, is covered with a ferrule. Therefore, damage to one longitudinal end surface of the optical fiber can be suppressed. As a result, an optical fiber member having excellent optical connection reliability can be manufactured.
  • the present invention (2) is a connection method for an optical connector structure for optically connecting an optical fiber member manufactured by the method for manufacturing an optical fiber member according to (1) to an optical module, wherein the optical module comprises an optical and a contact portion arranged around the optical element, and the contact portion is brought into contact with the ferrule to move the ferrule to the other longitudinal direction side with respect to the optical fiber, thereby moving the optical fiber. is optically connected to the optical element.
  • the ferrule by bringing the contact portion into contact with the ferrule, the ferrule can be moved to the other side in the longitudinal direction with respect to the optical fiber. Therefore, it is possible to control the arrangement of one end face in the longitudinal direction of the optical fiber, which serves as the connection face, with respect to the arrangement of the optical elements in the optical module. Therefore, optical connection reliability can be improved.
  • the present invention (3) comprises an optical fiber, a fixing member penetrating through the optical fiber and fixing the optical fiber, a ferrule inserted into the optical fiber and movable in the longitudinal direction with respect to the optical fiber,
  • a housing is provided for fixing the optical fiber via the fixing member and accommodating the optical fiber, the ferrule, and the fixing member, wherein one longitudinal end surface of the optical fiber is positioned from one longitudinal end surface of the ferrule. It comprises an optical fiber member located on the other longitudinal side and covered by the ferrule.
  • This optical fiber member is excellent in optical connection reliability because one longitudinal end face of the optical fiber is covered with a ferrule.
  • an optical fiber member having excellent optical connection reliability can be manufactured.
  • an optical connector structure with excellent optical connection reliability can be manufactured.
  • the optical fiber member of the present invention has excellent optical connection reliability.
  • FIG. 1 is a cross-sectional view of the first step provided in one embodiment of the method for manufacturing an optical fiber member of the present invention.
  • FIG. 2 is a cross-sectional view of the second step provided in one embodiment of the method for manufacturing an optical fiber member of the present invention.
  • FIG. 3 is a cross-sectional view of the third step provided in one embodiment of the method for manufacturing an optical fiber member of the present invention.
  • FIG. 4 is a cross-sectional view of one embodiment of the method for manufacturing an optical connector structure of the present invention.
  • FIG. 5 is a cross-sectional view of a modification of the optical connector structure.
  • FIG. 1 An embodiment of an optical fiber member, a method for manufacturing the same, and a method for manufacturing an optical connector structure according to the present invention will be described with reference to FIGS. 1 to 4.
  • FIG. 1 An embodiment of an optical fiber member, a method for manufacturing the same, and a method for manufacturing an optical connector structure according to the present invention will be described with reference to FIGS. 1 to 4.
  • FIG. 1 An embodiment of an optical fiber member, a method for manufacturing the same, and a method for manufacturing an optical connector structure according to the present invention will be described with reference to FIGS. 1 to 4.
  • optical fiber member 1 As shown in the right side view of FIG. 3, this optical fiber member 1 has a shape extending in the first direction.
  • the first direction is an example of the longitudinal direction, and is the direction in which the optical fiber 2 described below extends.
  • the optical fiber member 1 includes an optical fiber 2 , a fixing member 3 , a ferrule 4 and a housing 5 .
  • the optical fiber 2 extends along the first direction.
  • the optical fiber 2 has a first direction end face 11 and the other end face (not shown).
  • the other end face (not shown) of the optical fiber 2 in the second direction is connected to another optical connector (not shown).
  • the optical fiber member 1 has flexibility.
  • the optical fiber member 1 has a substantially circular cross section.
  • the optical fiber member 1 has a core (not shown) and a clad (not shown) arranged radially outward in this order.
  • a radial direction is included in an orthogonal direction that is orthogonal to the first direction.
  • the refractive index of the cladding is lower than that of the core.
  • the material of the optical fiber 2 is not limited. Materials for the optical fiber 2 include, for example, resins and ceramics.
  • resins include acrylic resins and epoxy resins.
  • ceramics include glass.
  • resin is preferably used from the viewpoint of flexibility. If the material of the optical fiber member 1 is resin, the optical fiber member 1 is called a plastic optical fiber (POF).
  • the diameter of the optical fiber 2 is, for example, 10 ⁇ m or more and, for example, 10000 ⁇ m or less.
  • the fixing member 3 has a substantially cylindrical shape.
  • the axis of the barrel is along the first direction.
  • the fixing member 3 is penetrated by the optical fiber 2 . That is, the optical fiber 2 is inserted through the fixing member 3 .
  • the inner peripheral surface of the fixing member 3 firmly contacts the outer peripheral surface of the optical fiber 2 .
  • the fixing member 3 supports the optical fiber 2 immovably in the first direction. That is, the fixing member 3 fixes the optical fiber 2 .
  • the material of the fixing member 3 is resin, for example.
  • the ferrule 4 is arranged on one side of the fixing member 3 in the first direction with a space therebetween.
  • the ferrule 4 has a substantially cylindrical shape.
  • the axis of ferrule 4 is along the first direction.
  • a ferrule 4 is inserted into the optical fiber 2 .
  • the optical fiber 2 is inserted from the rear end surface of the ferrule 4 in the first direction, and reaches one end of the ferrule 4 in the first direction without being exposed (penetrating) from the ferrule 4 .
  • FIG. 1 the ferrule 4 is arranged on one side of the fixing member 3 in the first direction with a space therebetween.
  • the ferrule 4 has a substantially cylindrical shape.
  • the axis of ferrule 4 is along the first direction.
  • a ferrule 4 is inserted into the optical fiber 2 .
  • the optical fiber 2 is inserted from the rear end surface of the ferrule 4 in the first direction, and reaches one end of the ferrule 4 in the first direction without
  • the first direction end face 11 of the optical fiber 2 is always in the first direction with respect to the ferrule contact face 12, which is the first direction end face of the ferrule 4. located on the other side.
  • a distance L1 in the first direction between the ferrule contact surface 12 and the one end surface 11 in the first direction is, for example, 0.01 mm or more and, for example, 10 mm or less.
  • the inner peripheral surface of the ferrule 4 may be separated from the outer peripheral surface of the optical fiber 2 by a small gap, or may be in contact therewith.
  • the ferrule 4 supports the optical fiber 2 so as to be movable in the first direction. That is, the ferrule 4 can slide in the first direction with respect to the optical fiber 2 .
  • the material of the ferrule 4 is resin, for example.
  • the housing 5 has a substantially tubular shape extending in the first direction.
  • Housing 5 accommodates optical fiber 2 , fixing member 3 and ferrule 4 .
  • the inner peripheral surface of the other end portion of the housing 5 in the first direction contacts the outer peripheral surface of the fixed member 3 .
  • the housing 5 fixes the optical fiber 2 via the fixing member 3 .
  • the inner peripheral surface of one end in the first direction of the housing 5 supports the ferrule 4 movably in the first direction. That is, the ferrule 4 can slide in the first direction with respect to the housing 5 .
  • the inner peripheral surface of one end in the first direction of the housing 5 may be separated from the outer peripheral surface of the ferrule 4 by a small gap, or may be in contact with the outer peripheral surface of the ferrule 4 .
  • a distance L2 in the first direction between the housing contact surface 13 and the ferrule contact surface 12 is, for example, 0.05 mm or more and, for example, 20 mm or less.
  • the housing contact surface 13 is arranged, for example, on the other side in the first direction with respect to the one end surface 11 in the first direction.
  • a distance L3 in the first direction between the housing contact surface 13 and the first direction one end surface 11 is the length obtained by subtracting the above L1 from the above L2.
  • the optical fiber 2 has the coated portion 7, the fixed portion 9, and the other side exposed portion 10, but does not have the one side exposed portion 8 (see FIG. 1) described later.
  • the covering portion 7 overlaps the ferrule 4 when projected radially.
  • One end face 11 in the first direction of the optical fiber 2 is included in the coated portion 7 .
  • Covered portion 7 is covered with ferrule 4 .
  • the fixed portion 9 contacts the fixing member 3 in the radial direction.
  • the other side exposed portion 10 is exposed from the fixing member 3 .
  • the other side exposed portion 10 is arranged on the other side in the first direction from the fixing member 3 .
  • the optical fiber member 1 may be provided with a pressure member (not shown).
  • a pressure member (not shown) is arranged between the fixing member 3 and the ferrule 4 in the housing 5 .
  • a pressure member (not shown) can press the ferrule 4 when the ferrule 4 moves toward the fixing member 3 .
  • the pressurizing member may contact the other end surface of the ferrule 4 in the first direction, but normally does not pressurize the ferrule 4 and is in contact with the ferrule 4 without load.
  • the method for manufacturing the optical fiber member 1 includes a first step, a second step, and a third step. In the method for manufacturing the optical fiber member 1, a first step, a second step, and a third step are performed in order.
  • an optical fiber member preparatory body 6 is prepared.
  • the optical fiber member preparation 6 includes an optical fiber 2 , a fixing member 3 , a ferrule 4 and a housing 5 .
  • the optical fiber 2 provided in the optical fiber member preparation 6 further includes a one-side exposed portion 8 in addition to the coated portion 7, the fixed portion 9, and the other-side exposed portion 10 described above.
  • One side exposed portion 8 is exposed from ferrule 4 . That is, the optical fiber 2 passes through the ferrule 4 in the first direction.
  • the one-side exposed portion 8 is arranged on one side in the first direction with respect to the ferrule 4 .
  • One end surface 11 of the optical fiber 2 in the first direction in the optical fiber member preparation 6 is included in the one-side exposed portion 8 .
  • the first direction length between the first direction end surface 11 and the ferrule contact surface 12 is different from L1 shown in FIG.
  • ⁇ Second step> As shown in FIG. 2, in the second step, the ferrule 4 is moved to the other side in the first direction with respect to the optical fiber 2, and the optical fiber 2 is cut.
  • a method for cutting the optical fiber 2 is not limited. Examples of methods for cutting the optical fiber 2 include contact cutting using a blade and non-contact cutting using a laser. From the viewpoint of forming a flat cut surface, contact cutting is preferred. A method of performing the second step by cutting the optical fiber 2 in a contact manner will be described below.
  • a cutting device 21 shown on the left side of FIG. 1 is used.
  • the cutting device 21 includes a holding portion 22 , a guide portion 23 and a blade portion 24 .
  • the holding portion 22 has a substantially tubular shape extending in the first direction.
  • the inner dimensions of the holding portion 22 are the same as the outer dimensions of the housing 5 .
  • the guide portion 23 includes a first plate 25, a second plate 26, and a communication portion (not shown).
  • the first plate 25 has a plate shape extending in the orthogonal direction.
  • the first plate 25 is formed integrally with the holding portion 22 .
  • the first plate 25 is connected to one end edge of the holding portion 22 in the first direction.
  • the first plate 25 has a first opening 28 penetrating in the first direction.
  • the first opening 28 faces the inside of the holding portion 22 .
  • the inner dimension of the first opening 28 is the same as or larger than the diameter of the optical fiber 2 .
  • the second plate 26 has a plate shape parallel to the first plate 25 .
  • the second plate 26 is arranged to face the first plate 25 on one side in the first direction with a gap therebetween.
  • the second plate 26 is arranged on the side opposite to the holding portion 22 with respect to the first plate 25 .
  • the second plate 26 has the same shape as the first plate 25 when viewed in the first direction.
  • the second plate 26 has a second opening 29 penetrating in the first direction. The second opening 29 overlaps the first opening 28 when projected in the first direction.
  • a connecting portion (not shown) connects one end of the first plate 25 and one end of the second plate 26 .
  • the shape of the blade portion 24 is not limited. Examples of the shape of the blade portion 24 include a disk shape and a rectangular shape.
  • the blade portion 24 is movable relative to the guide portion 23 in the orthogonal direction.
  • Blade portion 24 includes a cutting edge 27 .
  • the cutting edge 27 is arranged between the first plate 25 and the second plate 26 . When viewed in the first direction, the movement trajectory MT of the cutting edge 27 passes through the first opening 28 and the second opening 29 .
  • the optical fiber member preparatory body 6 is set in the cutting device 21 as indicated by the thick line in FIG. Specifically, the housing 5 is inserted into the holding portion 22 . At the same time, the one-side exposed portion 8 of the optical fiber 2 is passed through the first opening 28 and the second opening 29 .
  • the ferrule contact surface 12 of the ferrule 4 contacts the first plate 25 .
  • the housing 5 is pushed toward the first plate 25 side.
  • the ferrule 4 since the ferrule 4 is movable with respect to the housing 5 and the optical fiber 2 , it moves (slides) in the first direction other side with respect to the housing 5 and the optical fiber 2 .
  • the housing 5 and the optical fiber 2 move with respect to the guide portion 23 .
  • the portion 15 on one side of the covering portion 7 in the first direction is exposed (protruded) from the ferrule 4 .
  • the housing contact surface 13 of the housing 5 contacts the first plate 25 .
  • the pushing of the housing 5 and the ferrule 4 is finished, and the movement of the optical fiber 2 is finished.
  • the housing contact surface 13 coincides with the ferrule contact surface 12 in the first direction.
  • the blade portion 24 is then moved to pass the blade tip 27 through the one-side exposed portion 8 of the optical fiber 2 .
  • the portion 15 located between the first plate 25 and the second plate 26 of the covering portion 7 is cut.
  • portion 15 is cut.
  • the first direction one end face 11 of the optical fiber 2 which is newly cut, faces the gap between the first plate 25 and the second plate 26 .
  • ⁇ Third step> As shown in FIG. 3, in the third step, the housing 5 is separated from the cutting device 21 (see FIG. 2). Specifically, the ferrule 4 and the housing 5 are pulled out from the holding portion 22 toward the other side in the first direction. At this time, the housing contact surface 13 of the housing 5 is first separated from the first plate 25 . On the other hand, when the optical fiber member 1 is provided with a pressure member (not shown), the pressure member presses the ferrule 4 toward the first plate 25 so that the ferrule contact surface 12 is prevented from contacting the first plate 25. continue. Subsequently, when the pressure is released, the ferrule contact surface 12 is separated from the first plate 25 .
  • the ferrule contact surface 12 moves to one side in the first direction with respect to the housing contact surface 13 .
  • the ferrule contact surface 12 of the optical fiber 2 moves to one side in the first direction with respect to the one end surface 11 of the ferrule 4 in the first direction. That is, the first direction one end surface 11 is located on the other side in the first direction from the ferrule contact surface 12 .
  • the ferrule 4 covers the first direction one end face 11 of the optical fiber 2 with the ferrule 4 .
  • optical fiber member 1 having the optical fiber 2 cut at the portion 15 described above is obtained.
  • This optical fiber member 1 is optically connected to an optical module 31, for example.
  • the optical module 31 includes a module housing 32 , an optical element 33 , a lens 34 and a contact portion 35 .
  • the module housing 32 extends in the first direction.
  • the module housing 32 has a substantially tubular shape with a bottom that opens toward the other side in the first direction.
  • the module housing 32 integrally includes a tube 36 and a bottom wall 37 .
  • the cylinder 36 extends along the first direction.
  • the bottom wall 37 closes one end edge of the tube 36 in the first direction.
  • the bottom wall 37 extends in an orthogonal direction.
  • the optical element 33 is housed inside the module housing 32 . Specifically, the optical element 33 is arranged substantially at the center of the other surface of the bottom wall 37 in the first direction. Examples of the optical element 33 include photodiodes and laser diodes. The optical element 33 has an opening through which light can enter and exit on the other surface in the first direction.
  • the lens 34 is housed within the module housing 32 .
  • the lens 34 is arranged to face the optical element 33 with a gap on the other side in the first direction.
  • Lens 34 is positioned on the opposite side of bottom wall 37 to optical element 33 .
  • the lens 34 includes a first direction one surface that is a convex surface and a second direction other surface that is a flat surface.
  • Lens 34 is made of a transparent material.
  • the contacts 35 are housed within the module housing 32 .
  • the contact portion 35 is arranged adjacent to the lens 34 on the other side in the first direction.
  • the contact portion 35 is arranged on the opposite side of the optical element 33 to the lens 34 .
  • Examples of the material of the contact portion 35 include hard resin.
  • the contact portion 35 integrally includes a first wall 38 and a second wall 39 .
  • the first wall 38 contacts the other surface of the lens 34 in the first direction.
  • the first wall 38 has a flat plate shape extending in the orthogonal direction.
  • First wall 38 includes module opening 40 .
  • a module opening 40 extends through the first wall 38 in a first direction.
  • the module opening 40 is arranged substantially in the center of the first wall 38 in the orthogonal direction. When viewed in the first direction, module opening 40 encompasses the mouth (not shown) of optical element 33 . Therefore, the first wall 38 is arranged around the optical element 33 when viewed in the first direction.
  • the inner dimension of the module opening 40 is the same as or larger than the diameter of the optical fiber 2 .
  • the second wall 39 is arranged on the peripheral edge of the first wall 38 .
  • the second wall 39 has a frame shape when viewed in the first direction.
  • the other first direction surface of the second wall 39 is arranged on the other side in the first direction from the other first direction surface of the first wall 38 .
  • a step 45 is formed between the other first-direction surface of the second wall 39 and the other first-direction surface of the first wall 38 .
  • the first direction length S of the step 45 is shorter than the distance L3 in the first direction between the housing contact surface 13 and the first direction one end surface 11 of the optical fiber member 1 .
  • the outer peripheral side surface of the second wall 39 contacts the inner peripheral surface of the cylinder 36 .
  • the optical fiber member 1 is set in the optical module 31 . Specifically, the optical fiber member 1 is inserted into the module housing 32 as indicated by the thick arrow in FIG. Then, first, the ferrule contact surface 12 of the ferrule 4 contacts the first wall 38 . Subsequently, the housing 5 is pushed toward the second wall 39 side. Then, since the ferrule 4 is movable with respect to the housing 5 and the optical fiber 2 , it moves (slides) in the first direction other side with respect to the housing 5 and the optical fiber 2 . Meanwhile, the housing 5 and the optical fiber 2 move relative to the contact portion 35 .
  • the housing contact surface 13 of the housing 5 contacts the first plate 25 .
  • the pushing of the ferrule 4 is finished, and the movement of the housing 5 and the optical fiber 2 is finished.
  • one end face 11 in the first direction of the optical fiber 2 faces the module opening 40 .
  • the first direction one end surface 11 overlaps, for example, the mouth (not shown) of the optical element 33 when viewed in the first direction. This optically connects the optical fiber 2 with the optical element 33 .
  • an optical connector structure 41 including the optical module 31 and the optical fiber member 1 is manufactured.
  • the portion 15 of the optical fiber 2 covered with the ferrule 4 is cut to form the first direction one end surface 11 of the optical fiber 2 as an optical connection surface.
  • one end face 11 in the first direction of the optical fiber 2 is covered with the ferrule 4 . Therefore, damage to the first direction one end surface 11 of the optical fiber 2 can be suppressed. As a result, the optical fiber member 1 having excellent optical connection reliability can be manufactured.
  • the ferrule 4 can be moved to the other side in the first direction with respect to the optical fiber 2 by bringing the first wall 38 of the contact portion 35 into contact with the ferrule 4 . Therefore, the arrangement of the first direction one end face 11 in the optical fiber 2 can be controlled with respect to the arrangement of the optical elements 33 in the optical module 31 . Therefore, optical connection reliability can be improved.
  • the optical connector structure 41 even if the first direction one end surface 11 of the optical fiber 2 is arranged on one side in the first direction with respect to the ferrule contact surface 12, that is, on the optical element 33 side, good.
  • the arrangement of the first-direction one end surface 11 in the first direction is controlled by the design of the optical module 31 .
  • the optical connector is manufactured by the manufacturing method of the optical fiber member.
  • optical fiber member 2 optical fiber 3 fixing member 4 ferrule 5 housing 11 first direction one end surface (optical fiber) 12 ferrule contact surface 15 portion 31 optical module 33 optical element 35 contact portion 41 optical connector structure

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

Abstract

This method for manufacturing an optical fiber member (1) comprises first to third steps. In the first step, an optical fiber, a fixing member (3), a ferrule (4), and a housing (5) for accommodating these elements are prepared. In the second step, the ferrule (4) is moved to the other side in a first direction with respect to the optical fiber (2), a section (15) of the optical fiber (2) covered by the ferrule (4) in the first step is exposed, and the section (15) of the optical fiber (2) is cut off. In the third step, the ferrule (4) is moved to one side in the first direction with respect to the optical fiber (2), a first direction end surface (11) of the optical fiber (2) is positioned more on the other side in the first direction than a ferrule contact surface (12) of the ferrule (4), and the first direction end surface (11) of the optical fiber (2) is covered by the ferrule (4).

Description

光ファイバ部材、その製造方法および光コネクタ構造の製造方法Optical fiber member, manufacturing method thereof, and manufacturing method of optical connector structure
　本発明は、光ファイバ部材、その製造方法および光コネクタ構造の製造方法に関する。 The present invention relates to an optical fiber member, a method for manufacturing the same, and a method for manufacturing an optical connector structure.
　光ファイバと、リアハウジングと、フェルールと、フロントハウジングとを備える光コネクタが知られている（例えば、下記特許文献１参照。）。光コネクタに備えられる各部材は、前後方向に延びる。特許文献１に記載の光コネクタでは、フロントハウジングの前端内部にフェルールを収容する。フロントハウジングは、リアハウジングに前側から装着される。光ファイバは、リアハウジングと、フェルールと、フロントハウジングとを前後方向に貫通する。光ファイバの前端部は、フェルールから、前側に露出する（飛び出ている）。 An optical connector including an optical fiber, a rear housing, a ferrule, and a front housing is known (see, for example, Patent Document 1 below). Each member provided in the optical connector extends in the front-rear direction. In the optical connector disclosed in Patent Document 1, the ferrule is accommodated inside the front end of the front housing. The front housing is attached to the rear housing from the front side. The optical fiber passes through the rear housing, the ferrule, and the front housing in the front-rear direction. The front end of the optical fiber is exposed (protruded) forward from the ferrule.
特開２０１９－６６７７２号公報JP 2019-66772 A
　光ファイバの前端面を光素子との光学的な接続に供するために、光ファイバの前端部を切断して、平坦な前端面を形成する必要がある。 In order to use the front end face of the optical fiber for optical connection with the optical element, it is necessary to cut the front end of the optical fiber to form a flat front end face.
　しかし、特許文献１の光コネクタでは、光ファイバの前端面は、フェルールから露出するので、外部部材と接触し易い。すると、光ファイバの前端面が損傷する。そうすると、光ファイバと光素子との光学的な接続信頼性が低下する。 However, in the optical connector of Patent Document 1, the front end face of the optical fiber is exposed from the ferrule, so it is likely to come into contact with external members. Then, the front end face of the optical fiber is damaged. As a result, the optical connection reliability between the optical fiber and the optical element is lowered.
　本発明は、光学的な接続信頼性に優れる光ファイバ部材、その製造方法および光コネクタ構造の製造方法を提供する。 The present invention provides an optical fiber member with excellent optical connection reliability, a method for manufacturing the same, and a method for manufacturing an optical connector structure.
　本発明（１）は、光ファイバと、前記光ファイバに貫通され、前記光ファイバを固定する固定部材と、前記光ファイバに貫通され、前記光ファイバに対して長手方向に移動可能なフェルールと、前記光ファイバを前記固定部材を介して固定し、前記光ファイバと前記フェルールと前記固定部材とを収容するハウジングとを準備する第１工程と、前記第１工程の後に、前記フェルールを前記光ファイバに対して前記長手方向他方側に移動させ、前記第１工程で前記光ファイバにおいて前記フェルールで覆われていた部分を露出させて、前記光ファイバの前記部分を切断する第２工程と、前記第２工程の後に、前記フェルールを前記光ファイバに対して前記長手方向一方側に移動させて、前記光ファイバの長手方向一端面を前記フェルールの長手方向一端面より長手方向他方側に位置させて、前記光ファイバの長手方向一端面を前記フェルールで覆う第３工程とを備える、光ファイバ部材の製造方法を含む。 The present invention (1) comprises an optical fiber, a fixing member that penetrates the optical fiber and fixes the optical fiber, a ferrule that penetrates the optical fiber and is movable in the longitudinal direction with respect to the optical fiber, a first step of fixing the optical fiber via the fixing member and preparing a housing for accommodating the optical fiber, the ferrule, and the fixing member; a second step of exposing the portion of the optical fiber covered with the ferrule in the first step to cut the portion of the optical fiber; After the second step, the ferrule is moved to one side in the longitudinal direction with respect to the optical fiber so that one end face in the longitudinal direction of the optical fiber is located on the other side in the other longitudinal direction of the one end face in the longitudinal direction of the ferrule, and a third step of covering one longitudinal end face of the optical fiber with the ferrule.
　この製造方法によれば、第２工程において、光ファイバにおいてフェルールで覆われていた部分を切断して、光学的な接続面を形成できる。その後、第３工程において、光ファイバにおける接続面となる長手方向一端面をフェルールで覆う。そのため、光ファイバの長手方向一端面の損傷を抑制できる。その結果、光学的な接続信頼性に優れる光ファイバ部材を製造できる。 According to this manufacturing method, in the second step, the optical connection surface can be formed by cutting the portion of the optical fiber covered with the ferrule. Then, in the third step, one longitudinal end surface of the optical fiber, which serves as a connecting surface, is covered with a ferrule. Therefore, damage to one longitudinal end surface of the optical fiber can be suppressed. As a result, an optical fiber member having excellent optical connection reliability can be manufactured.
　本発明（２）は、（１）に記載の光ファイバ部材の製造方法により製造される光ファイバ部材を光モジュールと光学的に接続する光コネクタ構造の接続方法であり、前記光モジュールは、光素子と、前記光素子の周りに配置される接触部とを備え、前記接触部を前記フェルールに接触させて、前記フェルールを前記光ファイバに対して前記長手方向他方側に移動させ、前記光ファイバを前記光素子と光学的に接続する、光コネクタ構造の製造方法を含む。 The present invention (2) is a connection method for an optical connector structure for optically connecting an optical fiber member manufactured by the method for manufacturing an optical fiber member according to (1) to an optical module, wherein the optical module comprises an optical and a contact portion arranged around the optical element, and the contact portion is brought into contact with the ferrule to move the ferrule to the other longitudinal direction side with respect to the optical fiber, thereby moving the optical fiber. is optically connected to the optical element.
　この製造方法によれば、接触部をフェルールに接触させることにより、フェルールを光ファイバに対して長手方向他方側に移動させることができる。そのため、光ファイバにおいて接続面となる長手方向一端面の配置を、光モジュールにおける光素子の配置に対して、コントロールできる。そのため、光学的な接続信頼性を向上できる。 According to this manufacturing method, by bringing the contact portion into contact with the ferrule, the ferrule can be moved to the other side in the longitudinal direction with respect to the optical fiber. Therefore, it is possible to control the arrangement of one end face in the longitudinal direction of the optical fiber, which serves as the connection face, with respect to the arrangement of the optical elements in the optical module. Therefore, optical connection reliability can be improved.
　本発明（３）は、光ファイバと、前記光ファイバに貫通され、前記光ファイバを固定する固定部材と、前記光ファイバに挿入され、前記光ファイバに対して長手方向に移動可能なフェルールと、前記光ファイバを前記固定部材を介して固定し、前記光ファイバと前記フェルールと前記固定部材とを収容するハウジングとを備え、前記光ファイバの長手方向一端面は、前記フェルールの長手方向一端面より長手方向他方側に位置することにより、前記フェルールで覆われる、光ファイバ部材を備える。 The present invention (3) comprises an optical fiber, a fixing member penetrating through the optical fiber and fixing the optical fiber, a ferrule inserted into the optical fiber and movable in the longitudinal direction with respect to the optical fiber, A housing is provided for fixing the optical fiber via the fixing member and accommodating the optical fiber, the ferrule, and the fixing member, wherein one longitudinal end surface of the optical fiber is positioned from one longitudinal end surface of the ferrule. It comprises an optical fiber member located on the other longitudinal side and covered by the ferrule.
　この光ファイバ部材は、光ファイバの長手方向一端面がフェルールで覆われるので、光学的な接続信頼性に優れる。 This optical fiber member is excellent in optical connection reliability because one longitudinal end face of the optical fiber is covered with a ferrule.
　本発明の光ファイバ部材の製造方法によれば、光学的な接続信頼性に優れる光ファイバ部材を製造できる。 According to the method for manufacturing an optical fiber member of the present invention, an optical fiber member having excellent optical connection reliability can be manufactured.
　本発明の光コネクタ構造の製造方法によれば、光学的な接続信頼性に優れる光コネクタ構造を製造できる。 According to the method for manufacturing an optical connector structure of the present invention, an optical connector structure with excellent optical connection reliability can be manufactured.
　本発明の光ファイバ部材、光学的な接続信頼性に優れる。 The optical fiber member of the present invention has excellent optical connection reliability.
図１は、本発明の光ファイバ部材の製造方法の一実施形態に備えられる第１工程の断面図である。FIG. 1 is a cross-sectional view of the first step provided in one embodiment of the method for manufacturing an optical fiber member of the present invention. 図２は、本発明の光ファイバ部材の製造方法の一実施形態に備えられる第２工程の断面図である。FIG. 2 is a cross-sectional view of the second step provided in one embodiment of the method for manufacturing an optical fiber member of the present invention. 図３は、本発明の光ファイバ部材の製造方法の一実施形態に備えられる第３工程の断面図である。FIG. 3 is a cross-sectional view of the third step provided in one embodiment of the method for manufacturing an optical fiber member of the present invention. 図４は、本発明の光コネクタ構造の製造方法の一実施形態の断面図である。FIG. 4 is a cross-sectional view of one embodiment of the method for manufacturing an optical connector structure of the present invention. 図５は、光コネクタ構造の変形例の断面図である。FIG. 5 is a cross-sectional view of a modification of the optical connector structure.
＜光ファイバ部材、その製造方法および光コネクタ構造の製造方法の一実施形態＞
　本発明の光ファイバ部材、その製造方法および光コネクタ構造の製造方法の一実施形態を、図１から図４を参照して説明する。 <An embodiment of an optical fiber member, a method for manufacturing the same, and a method for manufacturing an optical connector structure>
An embodiment of an optical fiber member, a method for manufacturing the same, and a method for manufacturing an optical connector structure according to the present invention will be described with reference to FIGS. 1 to 4. FIG.
＜光ファイバ部材１＞
　図３の右側図に示すように、この光ファイバ部材１は、第１方向に延びる形状を有する。第１方向は、長手方向の一例であり、次に説明する光ファイバ２が延びる方向である。光ファイバ部材１は、光ファイバ２と、固定部材３と、フェルール４と、ハウジング５とを備える。 <Optical fiber member 1>
As shown in the right side view of FIG. 3, this optical fiber member 1 has a shape extending in the first direction. The first direction is an example of the longitudinal direction, and is the direction in which the optical fiber 2 described below extends. The optical fiber member 1 includes an optical fiber 2 , a fixing member 3 , a ferrule 4 and a housing 5 .
＜光ファイバ２＞
　光ファイバ２は、第１方向に沿って延びる。光ファイバ２は、第１方向一端面１１と、図示しない他端面とを有する。光ファイバ２の第２方向他端面（図示せず）は、図示しない別の光コネクタに接続されている。光ファイバ部材１は、可撓性を有する。光ファイバ部材１は、断面略円形状を有する。光ファイバ部材１は、図示しないコアと、図示しないクラッドとを径方向外側に向かって順に備える。径方向は、第１方向に直交する直交方向に含まれる。クラッドの屈折率は、コアの屈折率より低い。光ファイバ２の材料は、限定されない。光ファイバ２の材料としては、例えば、樹脂、および、セラミックスが挙げられる。樹脂としては、例えば、アクリル樹脂、および、エポキシ樹脂が挙げられる。セラミックスとしては、例えば、ガラスが挙げられる。光ファイバ２の材料として、好ましくは、可撓性の観点から、樹脂が挙げられる。光ファイバ部材１の材料が樹脂であれば、光ファイバ部材１は、プラスチック光ファイバ（ＰＯＦ）と称呼される。光ファイバ２の直径は、例えば、１０μｍ以上であり、また、例えば、１００００μｍ以下である。 <Optical fiber 2>
The optical fiber 2 extends along the first direction. The optical fiber 2 has a first direction end face 11 and the other end face (not shown). The other end face (not shown) of the optical fiber 2 in the second direction is connected to another optical connector (not shown). The optical fiber member 1 has flexibility. The optical fiber member 1 has a substantially circular cross section. The optical fiber member 1 has a core (not shown) and a clad (not shown) arranged radially outward in this order. A radial direction is included in an orthogonal direction that is orthogonal to the first direction. The refractive index of the cladding is lower than that of the core. The material of the optical fiber 2 is not limited. Materials for the optical fiber 2 include, for example, resins and ceramics. Examples of resins include acrylic resins and epoxy resins. Examples of ceramics include glass. As a material of the optical fiber 2, resin is preferably used from the viewpoint of flexibility. If the material of the optical fiber member 1 is resin, the optical fiber member 1 is called a plastic optical fiber (POF). The diameter of the optical fiber 2 is, for example, 10 μm or more and, for example, 10000 μm or less.
＜固定部材３＞
　固定部材３は、略円筒形状を有する。筒の軸は、第１方向に沿う。固定部材３は、光ファイバ２に貫通されている。つまり、光ファイバ２が固定部材３に貫通するように挿入されている。固定部材３の内周面は、光ファイバ２の外周面と強固に接触する。これにより、固定部材３は、光ファイバ２を第１方向に移動不可能に支持する。つまり、固定部材３は、光ファイバ２を固定する。固定部材３の材料は、例えば、樹脂である。 <Fixing member 3>
The fixing member 3 has a substantially cylindrical shape. The axis of the barrel is along the first direction. The fixing member 3 is penetrated by the optical fiber 2 . That is, the optical fiber 2 is inserted through the fixing member 3 . The inner peripheral surface of the fixing member 3 firmly contacts the outer peripheral surface of the optical fiber 2 . Thereby, the fixing member 3 supports the optical fiber 2 immovably in the first direction. That is, the fixing member 3 fixes the optical fiber 2 . The material of the fixing member 3 is resin, for example.
＜フェルール４＞
　図１に示すように、フェルール４は、固定部材３の第１方向一方側に間隔を隔てて配置されている。フェルール４は、略円筒形状を有する。フェルール４の軸は、第１方向に沿う。フェルール４は、光ファイバ２に挿入されている。具体的には、光ファイバ２は、フェルール４の第１方向後端面から挿入され、光ファイバ２がフェルール４から露出（貫通）することなく、フェルール４の第１方向一端部に至っている。図３に示すように、この光ファイバ部材１において、常には、光ファイバ２の第１方向一端面１１は、フェルール４の第１方向一端面であるフェルール接触面１２に対して、第１方向他方側に配置されている。フェルール接触面１２と、第１方向一端面１１との第１方向における距離Ｌ１は、例えば、０．０１ｍｍ以上であり、また、例えば、１０ｍｍ以下である。フェルール４の内周面は、光ファイバ２の外周面と微小な間隔が隔てられてもよく、または、接触してもよい。フェルール４は、光ファイバ２を第１方向に移動可能に支持する。つまり、フェルール４は、光ファイバ２に対して第１方向にスライド可能である。フェルール４の材料は、例えば、樹脂である。 <Ferrule 4>
As shown in FIG. 1, the ferrule 4 is arranged on one side of the fixing member 3 in the first direction with a space therebetween. The ferrule 4 has a substantially cylindrical shape. The axis of ferrule 4 is along the first direction. A ferrule 4 is inserted into the optical fiber 2 . Specifically, the optical fiber 2 is inserted from the rear end surface of the ferrule 4 in the first direction, and reaches one end of the ferrule 4 in the first direction without being exposed (penetrating) from the ferrule 4 . As shown in FIG. 3, in this optical fiber member 1, the first direction end face 11 of the optical fiber 2 is always in the first direction with respect to the ferrule contact face 12, which is the first direction end face of the ferrule 4. located on the other side. A distance L1 in the first direction between the ferrule contact surface 12 and the one end surface 11 in the first direction is, for example, 0.01 mm or more and, for example, 10 mm or less. The inner peripheral surface of the ferrule 4 may be separated from the outer peripheral surface of the optical fiber 2 by a small gap, or may be in contact therewith. The ferrule 4 supports the optical fiber 2 so as to be movable in the first direction. That is, the ferrule 4 can slide in the first direction with respect to the optical fiber 2 . The material of the ferrule 4 is resin, for example.
＜ハウジング５＞
　ハウジング５は、第１方向に延びる略筒形状を有する。ハウジング５は、光ファイバ２と、固定部材３と、フェルール４とを収容する。ハウジング５の第１方向他端部の内周面は、固定部材３の外周面と接触する。これによって、ハウジング５は、固定部材３を介して光ファイバ２を固定する。一方、ハウジング５の第１方向一端部の内周面は、フェルール４を第１方向に移動可能に支持する。つまり、フェルール４は、ハウジング５に対して第１方向にスライド可能である。ハウジング５の第１方向一端部の内周面は、フェルール４の外周面と微小な間隔が隔てられてもよく、または、接触してもよい。 <Housing 5>
The housing 5 has a substantially tubular shape extending in the first direction. Housing 5 accommodates optical fiber 2 , fixing member 3 and ferrule 4 . The inner peripheral surface of the other end portion of the housing 5 in the first direction contacts the outer peripheral surface of the fixed member 3 . Thereby, the housing 5 fixes the optical fiber 2 via the fixing member 3 . On the other hand, the inner peripheral surface of one end in the first direction of the housing 5 supports the ferrule 4 movably in the first direction. That is, the ferrule 4 can slide in the first direction with respect to the housing 5 . The inner peripheral surface of one end in the first direction of the housing 5 may be separated from the outer peripheral surface of the ferrule 4 by a small gap, or may be in contact with the outer peripheral surface of the ferrule 4 .
　ハウジング５の第１方向一端面であるハウジング接触面１３は、フェルール接触面１２に対して、第１方向他方側に配置されている。ハウジング接触面１３とフェルール接触面１２との第１方向における距離Ｌ２は、例えば、０．０５ｍｍ以上であり、また、例えば、２０ｍｍ以下である。ハウジング接触面１３は、例えば、第１方向一端面１１に対して、第１方向他方側に配置されている。ハウジング接触面１３と第１方向一端面１１との第１方向における距離Ｌ３は、上記したＬ２から上記したＬ１を差し引いた長さである。 A housing contact surface 13, which is one end surface in the first direction of the housing 5, is arranged on the other side in the first direction with respect to the ferrule contact surface 12. A distance L2 in the first direction between the housing contact surface 13 and the ferrule contact surface 12 is, for example, 0.05 mm or more and, for example, 20 mm or less. The housing contact surface 13 is arranged, for example, on the other side in the first direction with respect to the one end surface 11 in the first direction. A distance L3 in the first direction between the housing contact surface 13 and the first direction one end surface 11 is the length obtained by subtracting the above L1 from the above L2.
　この光ファイバ部材１において、光ファイバ２は、被覆部分７と、被固定部分９と、他方側露出部１０とを有する一方、後述する一方側露出部分８（図１参照）を有しない。図３に示すように、被覆部分７は、径方向に投影したときに、フェルール４と重なる。光ファイバ２の第１方向一端面１１は、被覆部分７に含まれる。被覆部分７は、フェルール４に覆われる。 In this optical fiber member 1, the optical fiber 2 has the coated portion 7, the fixed portion 9, and the other side exposed portion 10, but does not have the one side exposed portion 8 (see FIG. 1) described later. As shown in FIG. 3, the covering portion 7 overlaps the ferrule 4 when projected radially. One end face 11 in the first direction of the optical fiber 2 is included in the coated portion 7 . Covered portion 7 is covered with ferrule 4 .
　被固定部分９は、径方向において固定部材３と接触する。 The fixed portion 9 contacts the fixing member 3 in the radial direction.
　他方側露出部１０は、固定部材３から露出する。他方側露出部１０は、固定部材３より第１方向他方側に配置される。 The other side exposed portion 10 is exposed from the fixing member 3 . The other side exposed portion 10 is arranged on the other side in the first direction from the fixing member 3 .
　なお、光ファイバ部材１は、図示しない加圧部材を備えてもよい。図示しない加圧部材は、ハウジング５内において、固定部材３とフェルール４との間に配置される。図示しない加圧部材は、フェルール４が固定部材３側に移動するときに、フェルール４を加圧可能である。なお、加圧部材は、フェルール４の第１方向他端面に接触してもよいが、常には、フェルール４を加圧せず、無負荷で接触している。 It should be noted that the optical fiber member 1 may be provided with a pressure member (not shown). A pressure member (not shown) is arranged between the fixing member 3 and the ferrule 4 in the housing 5 . A pressure member (not shown) can press the ferrule 4 when the ferrule 4 moves toward the fixing member 3 . The pressurizing member may contact the other end surface of the ferrule 4 in the first direction, but normally does not pressurize the ferrule 4 and is in contact with the ferrule 4 without load.
＜光ファイバ部材１の製造方法＞
　次に、光ファイバ部材１の製造方法を説明する。光ファイバ部材１の製造方法は、第１工程と、第２工程と、第３工程とを備える。光ファイバ部材１の製造方法では、第１工程と、第２工程と、第３工程とが、順に実施される。 <Manufacturing Method of Optical Fiber Member 1>
Next, a method for manufacturing the optical fiber member 1 will be described. The method for manufacturing the optical fiber member 1 includes a first step, a second step, and a third step. In the method for manufacturing the optical fiber member 1, a first step, a second step, and a third step are performed in order.
＜第１工程＞
　図１の右側図に示すように、第１工程では、光ファイバ部材準備体６を準備する。光ファイバ部材準備体６は、光ファイバ２と、固定部材３と、フェルール４と、ハウジング５とを備える。 <First step>
As shown in the right view of FIG. 1, in the first step, an optical fiber member preparatory body 6 is prepared. The optical fiber member preparation 6 includes an optical fiber 2 , a fixing member 3 , a ferrule 4 and a housing 5 .
　ただし、光ファイバ部材準備体６に備えられる光ファイバ２は、上記した被覆部分７、被固定部分９および他方側露出部１０に加え、一方側露出部分８をさらに含む。一方側露出部分８は、フェルール４から露出する。つまり、光ファイバ２は、フェルール４を第１方向に貫通している。一方側露出部分８は、フェルール４に対して第１方向一方側に配置される。光ファイバ部材準備体６における光ファイバ２の第１方向一端面１１は、一方側露出部分８に含まれる。第１方向一端面１１とフェルール接触面１２との第１方向長さは、図３に示すＬ１と異なる。 However, the optical fiber 2 provided in the optical fiber member preparation 6 further includes a one-side exposed portion 8 in addition to the coated portion 7, the fixed portion 9, and the other-side exposed portion 10 described above. One side exposed portion 8 is exposed from ferrule 4 . That is, the optical fiber 2 passes through the ferrule 4 in the first direction. The one-side exposed portion 8 is arranged on one side in the first direction with respect to the ferrule 4 . One end surface 11 of the optical fiber 2 in the first direction in the optical fiber member preparation 6 is included in the one-side exposed portion 8 . The first direction length between the first direction end surface 11 and the ferrule contact surface 12 is different from L1 shown in FIG.
＜第２工程＞
　図２に示すように、第２工程では、フェルール４を光ファイバ２に対して第１方向他方側に移動させ、光ファイバ２を切断する。光ファイバ２の切断方法は、限定されない。光ファイバ２の切断方法として、例えば、刃を用いる接触式の切断、および、レーザを用いる非接触式の切断が挙げられる。平坦な切断面を形成する観点から、好ましくは、接触式の切断が挙げられる。以下、接触式で光ファイバ２を切断して第２工程を実施する方法を説明する。 <Second step>
As shown in FIG. 2, in the second step, the ferrule 4 is moved to the other side in the first direction with respect to the optical fiber 2, and the optical fiber 2 is cut. A method for cutting the optical fiber 2 is not limited. Examples of methods for cutting the optical fiber 2 include contact cutting using a blade and non-contact cutting using a laser. From the viewpoint of forming a flat cut surface, contact cutting is preferred. A method of performing the second step by cutting the optical fiber 2 in a contact manner will be described below.
＜切断装置２１＞
　第２工程では、図１の左側図に示す切断装置２１を用いる。切断装置２１は、保持部２２と、ガイド部２３と、刃部２４とを備える。 <Cutting device 21>
In the second step, a cutting device 21 shown on the left side of FIG. 1 is used. The cutting device 21 includes a holding portion 22 , a guide portion 23 and a blade portion 24 .
　保持部２２は、第１方向に延びる略筒形状を有する。保持部２２の内寸は、ハウジング５の外寸と同一である。 The holding portion 22 has a substantially tubular shape extending in the first direction. The inner dimensions of the holding portion 22 are the same as the outer dimensions of the housing 5 .
　ガイド部２３は、第１板２５と、第２板２６と、図示しない連絡部とを備える。第１板２５は、直交方向に延びる板形状を有する。第１板２５は、保持部２２と一体的に形成されている。具体的には、第１板２５は、保持部２２の第１方向一端縁に接続される。また、第１板２５は、第１方向を貫通する第１開口部２８を有する。第１開口部２８は、保持部２２の内部に臨む。第１開口部２８の内寸は、光ファイバ２の直径と同一または大きい。 The guide portion 23 includes a first plate 25, a second plate 26, and a communication portion (not shown). The first plate 25 has a plate shape extending in the orthogonal direction. The first plate 25 is formed integrally with the holding portion 22 . Specifically, the first plate 25 is connected to one end edge of the holding portion 22 in the first direction. Further, the first plate 25 has a first opening 28 penetrating in the first direction. The first opening 28 faces the inside of the holding portion 22 . The inner dimension of the first opening 28 is the same as or larger than the diameter of the optical fiber 2 .
　第２板２６は、第１板２５に平行する板形状を有する。第２板２６は、第１板２５の第１方向一方側に間隔を対向配置される。第２板２６は、第１板２５に対して保持部２２の反対側に配置される。第１方向に見たときに、第２板２６は、第１板２５と同一形状を有する。第２板２６は、第１方向を貫通する第２開口部２９を有する。第１方向に投影したときに、第２開口部２９は、第１開口部２８と重なる。 The second plate 26 has a plate shape parallel to the first plate 25 . The second plate 26 is arranged to face the first plate 25 on one side in the first direction with a gap therebetween. The second plate 26 is arranged on the side opposite to the holding portion 22 with respect to the first plate 25 . The second plate 26 has the same shape as the first plate 25 when viewed in the first direction. The second plate 26 has a second opening 29 penetrating in the first direction. The second opening 29 overlaps the first opening 28 when projected in the first direction.
　図示しない連絡部は、第１板２５の一端部と、第２板２６の一端部とを連結する。 A connecting portion (not shown) connects one end of the first plate 25 and one end of the second plate 26 .
　刃部２４の形状は、限定されない。刃部２４の形状としては、例えば、円板形状、および、矩形状が挙げられる。刃部２４は、ガイド部２３に対して直交方向に相対移動可能である。刃部２４は、刃先２７を含む。刃先２７は、第１板２５と第２板２６との間に配置される。第１方向に視たときに、刃先２７の移動軌跡ＭＴは、第１開口部２８と第２開口部２９とを通過する。 The shape of the blade portion 24 is not limited. Examples of the shape of the blade portion 24 include a disk shape and a rectangular shape. The blade portion 24 is movable relative to the guide portion 23 in the orthogonal direction. Blade portion 24 includes a cutting edge 27 . The cutting edge 27 is arranged between the first plate 25 and the second plate 26 . When viewed in the first direction, the movement trajectory MT of the cutting edge 27 passes through the first opening 28 and the second opening 29 .
　第２工程では、図１の太線で示すように、光ファイバ部材準備体６を切断装置２１にセットする。具体的には、ハウジング５を保持部２２に挿入する。併せて、光ファイバ２の一方側露出部分８を、第１開口部２８と第２開口部２９とに貫通させる。 In the second step, the optical fiber member preparatory body 6 is set in the cutting device 21 as indicated by the thick line in FIG. Specifically, the housing 5 is inserted into the holding portion 22 . At the same time, the one-side exposed portion 8 of the optical fiber 2 is passed through the first opening 28 and the second opening 29 .
　すると、まず、フェルール４のフェルール接触面１２が、第１板２５に接触する。続いて、ハウジング５を第１板２５側に向けて押し込む。すると、フェルール４は、ハウジング５と光ファイバ２とに対して移動可能であることから、ハウジング５と光ファイバ２とに対して第１方向他方側に移動（スライド）する。一方、ハウジング５と光ファイバ２とは、ガイド部２３に対して移動する。これにより、被覆部分７の第１方向一方側の部分１５がフェルール４から露出する（飛び出る）。 Then, first, the ferrule contact surface 12 of the ferrule 4 contacts the first plate 25 . Subsequently, the housing 5 is pushed toward the first plate 25 side. Then, since the ferrule 4 is movable with respect to the housing 5 and the optical fiber 2 , it moves (slides) in the first direction other side with respect to the housing 5 and the optical fiber 2 . On the other hand, the housing 5 and the optical fiber 2 move with respect to the guide portion 23 . As a result, the portion 15 on one side of the covering portion 7 in the first direction is exposed (protruded) from the ferrule 4 .
　その後、ハウジング５のハウジング接触面１３が第１板２５に接触する。これにより、ハウジング５とフェルール４との押し込みが終了するとともに、光ファイバ２の移動が終了する。このとき、例えば、ハウジング接触面１３は、第１方向において、フェルール接触面１２と一致する。 After that, the housing contact surface 13 of the housing 5 contacts the first plate 25 . As a result, the pushing of the housing 5 and the ferrule 4 is finished, and the movement of the optical fiber 2 is finished. At this time, for example, the housing contact surface 13 coincides with the ferrule contact surface 12 in the first direction.
　第２工程では、その後、刃部２４を移動させて、刃先２７を光ファイバ２の一方側露出部分８に通過させる。これによって、被覆部分７のうち、第１板２５と第２板２６との間に位置する部分１５が切り込まれる。具体的には、部分１５が切断される。光ファイバ２において新たに切断面となった第１方向一端面１１は、第１板２５と第２板２６との間の隙間に臨んでいる。 In the second step, the blade portion 24 is then moved to pass the blade tip 27 through the one-side exposed portion 8 of the optical fiber 2 . As a result, the portion 15 located between the first plate 25 and the second plate 26 of the covering portion 7 is cut. Specifically, portion 15 is cut. The first direction one end face 11 of the optical fiber 2 , which is newly cut, faces the gap between the first plate 25 and the second plate 26 .
＜第３工程＞
　図３に示すように、第３工程では、ハウジング５を切断装置２１（図２参照）から離脱させる。具体的には、フェルール４とハウジング５とを保持部２２から第１方向他方側に向けて引き抜く。この際、まず、ハウジング５のハウジング接触面１３は、第１板２５から離れる。一方、光ファイバ部材１が図示しない加圧部材を備える場合には、加圧部材がフェルール４を第１板２５側に加圧することによって、フェルール接触面１２は、第１板２５との接触を継続する。続いて、上記した加圧が解除されれば、フェルール接触面１２が第１板２５から離れる。これによって、フェルール接触面１２は、ハウジング接触面１３に対して第１方向一方側に移動する。併せて、光ファイバ２のフェルール接触面１２は、フェルール４の第１方向一端面１１に対して第１方向一方側に移動する。つまり、第１方向一端面１１が、フェルール接触面１２より第１方向に他方側に位置する。これによって、フェルール４が光ファイバ２の第１方向一端面１１をフェルール４で覆う。 <Third step>
As shown in FIG. 3, in the third step, the housing 5 is separated from the cutting device 21 (see FIG. 2). Specifically, the ferrule 4 and the housing 5 are pulled out from the holding portion 22 toward the other side in the first direction. At this time, the housing contact surface 13 of the housing 5 is first separated from the first plate 25 . On the other hand, when the optical fiber member 1 is provided with a pressure member (not shown), the pressure member presses the ferrule 4 toward the first plate 25 so that the ferrule contact surface 12 is prevented from contacting the first plate 25. continue. Subsequently, when the pressure is released, the ferrule contact surface 12 is separated from the first plate 25 . As a result, the ferrule contact surface 12 moves to one side in the first direction with respect to the housing contact surface 13 . At the same time, the ferrule contact surface 12 of the optical fiber 2 moves to one side in the first direction with respect to the one end surface 11 of the ferrule 4 in the first direction. That is, the first direction one end surface 11 is located on the other side in the first direction from the ferrule contact surface 12 . As a result, the ferrule 4 covers the first direction one end face 11 of the optical fiber 2 with the ferrule 4 .
　これによって、上記した部分１５が切断された光ファイバ２を備える光ファイバ部材１を得る。 Thereby, the optical fiber member 1 having the optical fiber 2 cut at the portion 15 described above is obtained.
　この光ファイバ部材１は、例えば、光モジュール３１と光学的に接続される。 This optical fiber member 1 is optically connected to an optical module 31, for example.
　次に、光ファイバ部材１と光モジュール３１との光学的な接続を、図３と図４とを参照して説明する。 Next, optical connection between the optical fiber member 1 and the optical module 31 will be described with reference to FIGS. 3 and 4. FIG.
　この方法では、図３に示すように、上記した光ファイバ部材１と、光モジュール３１とを準備する。光モジュール３１は、モジュールハウジング３２と、光素子３３と、レンズ３４と、接触部３５とを備える。 In this method, as shown in FIG. 3, the optical fiber member 1 and the optical module 31 are prepared. The optical module 31 includes a module housing 32 , an optical element 33 , a lens 34 and a contact portion 35 .
　モジュールハウジング３２は、第１方向に延びる。モジュールハウジング３２は、第１方向他方側に向かって開口される有底略筒形状を有する。モジュールハウジング３２は、筒３６と、底壁３７とを一体的に備える。筒３６は、第１方向に沿って延びる。底壁３７は、筒３６の第１方向一端縁を閉塞する。底壁３７は、直交方向に延びる。 The module housing 32 extends in the first direction. The module housing 32 has a substantially tubular shape with a bottom that opens toward the other side in the first direction. The module housing 32 integrally includes a tube 36 and a bottom wall 37 . The cylinder 36 extends along the first direction. The bottom wall 37 closes one end edge of the tube 36 in the first direction. The bottom wall 37 extends in an orthogonal direction.
　光素子３３は、モジュールハウジング３２内に収容される。具体的には、光素子３３は、底壁３７の第１方向他方面の略中央部に配置されている。光素子３３としては、例えば、フォトダイオード、および、レーザダイオードが挙げられる。光素子３３は、その第１方向他方面に、光が出入り可能な口を有する。 The optical element 33 is housed inside the module housing 32 . Specifically, the optical element 33 is arranged substantially at the center of the other surface of the bottom wall 37 in the first direction. Examples of the optical element 33 include photodiodes and laser diodes. The optical element 33 has an opening through which light can enter and exit on the other surface in the first direction.
　レンズ３４は、モジュールハウジング３２内に収容される。レンズ３４は、光素子３３と第１方向他方側に間隔を隔てて対向配置される。レンズ３４は、光素子３３に対する底壁３７の反対側に配置される。レンズ３４は、凸面である第１方向一方面と、平坦面である第２方向他方面とを含む。レンズ３４は、透明材料からなる。 The lens 34 is housed within the module housing 32 . The lens 34 is arranged to face the optical element 33 with a gap on the other side in the first direction. Lens 34 is positioned on the opposite side of bottom wall 37 to optical element 33 . The lens 34 includes a first direction one surface that is a convex surface and a second direction other surface that is a flat surface. Lens 34 is made of a transparent material.
　接触部３５は、モジュールハウジング３２内に収容される。接触部３５は、レンズ３４の第１方向他方側に隣接配置されている。接触部３５は、レンズ３４に対する光素子３３の反対側に配置される。接触部３５の材料としては、例えば、硬質の樹脂が挙げられる。
　接触部３５は、第１壁３８と、第２壁３９とを一体的に備える。 The contacts 35 are housed within the module housing 32 . The contact portion 35 is arranged adjacent to the lens 34 on the other side in the first direction. The contact portion 35 is arranged on the opposite side of the optical element 33 to the lens 34 . Examples of the material of the contact portion 35 include hard resin.
The contact portion 35 integrally includes a first wall 38 and a second wall 39 .
　第１壁３８は、レンズ３４の第１方向他方面に接触する。第１壁３８は、直交方向に延びる平板形状を有する。第１壁３８は、モジュール開口部４０を含む。モジュール開口部４０は、第１壁３８を第１方向に貫通する。モジュール開口部４０は、第１壁３８の直交方向略中央部に配置されている。第１方向に見たときに、モジュール開口部４０は、光素子３３の口（図示せず）を包含する。そのため、第１方向で見たときに、第１壁３８は、光素子３３の周囲に配置される。モジュール開口部４０の内寸は、光ファイバ２の直径と同一または大きい。 The first wall 38 contacts the other surface of the lens 34 in the first direction. The first wall 38 has a flat plate shape extending in the orthogonal direction. First wall 38 includes module opening 40 . A module opening 40 extends through the first wall 38 in a first direction. The module opening 40 is arranged substantially in the center of the first wall 38 in the orthogonal direction. When viewed in the first direction, module opening 40 encompasses the mouth (not shown) of optical element 33 . Therefore, the first wall 38 is arranged around the optical element 33 when viewed in the first direction. The inner dimension of the module opening 40 is the same as or larger than the diameter of the optical fiber 2 .
　第２壁３９は、第１壁３８の周端縁に配置される。第２壁３９は、第１方向に見たときに、枠形状を有する。第２壁３９の第１方向他方面は、第１壁３８の第１方向他方面より、第１方向他方側に配置される。これにより、第２壁３９の第１方向他方面と、第１壁３８の第１方向他方面とは、段差４５を形成する。段差４５の第１方向長さＳは、光ファイバ部材１におけるハウジング接触面１３と第１方向一端面１１との第１方向における距離Ｌ３に比べて短い。第２壁３９の外周側面は、筒３６の内周面に接触する。 The second wall 39 is arranged on the peripheral edge of the first wall 38 . The second wall 39 has a frame shape when viewed in the first direction. The other first direction surface of the second wall 39 is arranged on the other side in the first direction from the other first direction surface of the first wall 38 . As a result, a step 45 is formed between the other first-direction surface of the second wall 39 and the other first-direction surface of the first wall 38 . The first direction length S of the step 45 is shorter than the distance L3 in the first direction between the housing contact surface 13 and the first direction one end surface 11 of the optical fiber member 1 . The outer peripheral side surface of the second wall 39 contacts the inner peripheral surface of the cylinder 36 .
　この製造方法では、光ファイバ部材１を光モジュール３１にセットする。具体的には、図３の太い矢印で示すように、光ファイバ部材１をモジュールハウジング３２に挿入する。すると、まず、フェルール４のフェルール接触面１２が、第１壁３８に接触する。続いて、ハウジング５を第２壁３９側に向けて押し込む。すると、フェルール４は、ハウジング５と光ファイバ２とに対して移動可能であることから、ハウジング５と光ファイバ２とに対して第１方向他方側に移動（スライド）する。一方、ハウジング５と光ファイバ２とは、接触部３５に対して移動する。 In this manufacturing method, the optical fiber member 1 is set in the optical module 31 . Specifically, the optical fiber member 1 is inserted into the module housing 32 as indicated by the thick arrow in FIG. Then, first, the ferrule contact surface 12 of the ferrule 4 contacts the first wall 38 . Subsequently, the housing 5 is pushed toward the second wall 39 side. Then, since the ferrule 4 is movable with respect to the housing 5 and the optical fiber 2 , it moves (slides) in the first direction other side with respect to the housing 5 and the optical fiber 2 . Meanwhile, the housing 5 and the optical fiber 2 move relative to the contact portion 35 .
　その後、ハウジング５のハウジング接触面１３が第１板２５に接触する。これにより、フェルール４の押し込みが終了するとともに、ハウジング５と光ファイバ２との移動が終了する。 After that, the housing contact surface 13 of the housing 5 contacts the first plate 25 . As a result, the pushing of the ferrule 4 is finished, and the movement of the housing 5 and the optical fiber 2 is finished.
　このとき、光ファイバ２の第１方向一端面１１は、モジュール開口部４０に臨む。また、第１方向一端面１１は、第１方向に見たときに、例えば、光素子３３の口（図示せず）と重複する。これによって、光ファイバ２を光素子３３と光学的に接続する。 At this time, one end face 11 in the first direction of the optical fiber 2 faces the module opening 40 . Also, the first direction one end surface 11 overlaps, for example, the mouth (not shown) of the optical element 33 when viewed in the first direction. This optically connects the optical fiber 2 with the optical element 33 .
　これにより、光モジュール３１と光ファイバ部材１とを備える光コネクタ構造４１が製造される。 Thus, an optical connector structure 41 including the optical module 31 and the optical fiber member 1 is manufactured.
＜一実施形態の作用効果＞ <Action and effect of one embodiment>
　この製造方法によれば、第２工程において、光ファイバ２においてフェルール４で覆われていた部分１５を切断して、光ファイバ２の第１方向一端面１１を光学的な接続面として形成できる。その後、第３工程において、光ファイバ２における第１方向一端面１１をフェルール４で覆う。そのため、光ファイバ２の第１方向一端面１１の損傷を抑制できる。その結果、光学的な接続信頼性に優れる光ファイバ部材１を製造できる。 According to this manufacturing method, in the second step, the portion 15 of the optical fiber 2 covered with the ferrule 4 is cut to form the first direction one end surface 11 of the optical fiber 2 as an optical connection surface. After that, in the third step, one end face 11 in the first direction of the optical fiber 2 is covered with the ferrule 4 . Therefore, damage to the first direction one end surface 11 of the optical fiber 2 can be suppressed. As a result, the optical fiber member 1 having excellent optical connection reliability can be manufactured.
　また、この製造方法によれば、接触部３５の第１壁３８をフェルール４に接触させることにより、フェルール４を光ファイバ２に対して第１方向他方側に移動させることができる。そのため、光ファイバ２において第１方向一端面１１の配置を、光モジュール３１における光素子３３の配置に対して、コントロールできる。そのため、光学的な接続信頼性を向上できる。 Further, according to this manufacturing method, the ferrule 4 can be moved to the other side in the first direction with respect to the optical fiber 2 by bringing the first wall 38 of the contact portion 35 into contact with the ferrule 4 . Therefore, the arrangement of the first direction one end face 11 in the optical fiber 2 can be controlled with respect to the arrangement of the optical elements 33 in the optical module 31 . Therefore, optical connection reliability can be improved.
＜変形例＞
　以下の変形例において、上記した一実施形態と同様の部材および工程については、同一の参照符号を付し、その詳細な説明を省略する。また、変形例は、特記する以外、一実施形態と同様の作用効果を奏することができる。さらに、一実施形態およびその変形例を適宜組み合わせることができる。 <Modification>
In the following modified examples, the same reference numerals are given to the same members and steps as in the above-described embodiment, and detailed description thereof will be omitted. In addition, the modified example can have the same effects as the one embodiment, unless otherwise specified. Furthermore, one embodiment and its modifications can be combined as appropriate.
　図５に示すように、光コネクタ構造４１において、光ファイバ２の第１方向一端面１１が、フェルール接触面１２に対して第１方向一方側、つまり、光素子３３側に配置されていてもよい。上記した第１方向一端面１１の第１方向における配置は、光モジュール３１の設計によってコントロールされる。 As shown in FIG. 5, in the optical connector structure 41, even if the first direction one end surface 11 of the optical fiber 2 is arranged on one side in the first direction with respect to the ferrule contact surface 12, that is, on the optical element 33 side, good. The arrangement of the first-direction one end surface 11 in the first direction is controlled by the design of the optical module 31 .
　なお、上記発明は、本発明の例示の実施形態として提供したが、これは単なる例示に過ぎず、限定的に解釈してはならない。当該技術分野の当業者によって明らかな本発明の変形例は、後記請求の範囲に含まれる。 Although the above invention has been provided as an exemplary embodiment of the present invention, this is merely an illustration and should not be construed as limiting. Variations of the invention that are obvious to those skilled in the art are included in the following claims.
　光ファイバ部材の製造方法によって、光コネクタが製造される。 The optical connector is manufactured by the manufacturing method of the optical fiber member.
１　光ファイバ部材
２　光ファイバ
３　固定部材
４　フェルール
５　ハウジング
１１　第１方向一端面　（光ファイバ）
１２　フェルール接触面
１５　部分
３１　光モジュール
３３　光素子
３５　接触部
４１　光コネクタ構造 1 optical fiber member 2 optical fiber 3 fixing member 4 ferrule 5 housing 11 first direction one end surface (optical fiber)
12 ferrule contact surface 15 portion 31 optical module 33 optical element 35 contact portion 41 optical connector structure

Claims (3)

  1. 　光ファイバと、前記光ファイバに貫通され、前記光ファイバを固定する固定部材と、前記光ファイバに貫通され、前記光ファイバに対して長手方向に移動可能なフェルールと、
    　前記光ファイバを前記固定部材を介して固定し、前記光ファイバと前記フェルールと前記固定部材とを収容するハウジングとを準備する第１工程と、
    　前記第１工程の後に、前記フェルールを前記光ファイバに対して前記長手方向他方側に移動させ、前記第１工程で前記光ファイバにおいて前記フェルールで覆われていた部分を露出させて、前記光ファイバの前記部分を切断する第２工程と、
    　前記第２工程の後に、前記フェルールを前記光ファイバに対して前記長手方向一方側に移動させて、前記光ファイバの長手方向一端面を前記フェルールの長手方向一端面より長手方向他方側に位置させて、前記光ファイバの長手方向一端面を前記フェルールで覆う第３工程とを備える、光ファイバ部材の製造方法。     an optical fiber, a fixing member that penetrates the optical fiber and fixes the optical fiber, a ferrule that penetrates the optical fiber and is longitudinally movable with respect to the optical fiber,
    a first step of fixing the optical fiber via the fixing member and preparing a housing that accommodates the optical fiber, the ferrule, and the fixing member;
    After the first step, the ferrule is moved to the other side in the longitudinal direction with respect to the optical fiber to expose the portion of the optical fiber that was covered with the ferrule in the first step, thereby exposing the optical fiber. a second step of cutting said portion of
    After the second step, the ferrule is moved to the one longitudinal direction side with respect to the optical fiber so that one longitudinal end face of the optical fiber is located on the other longitudinal direction side of the one longitudinal end face of the ferrule. and a third step of covering one longitudinal end surface of the optical fiber with the ferrule.
  2. 　請求項１に記載の光ファイバ部材の製造方法により製造される光ファイバ部材を光モジュールと光学的に接続する光コネクタ構造の接続方法であり、
    　前記光モジュールは、光素子と、前記光素子の周りに配置される接触部とを備え、
    　前記接触部を前記フェルールに接触させて、前記フェルールを前記光ファイバに対して前記長手方向他方側に移動させ、前記光ファイバを前記光素子と光学的に接続する、光コネクタ構造の製造方法。     A connection method for an optical connector structure for optically connecting an optical fiber member manufactured by the method for manufacturing an optical fiber member according to claim 1 to an optical module,
    The optical module comprises an optical element and a contact portion arranged around the optical element,
    A method of manufacturing an optical connector structure, wherein the contact portion is brought into contact with the ferrule, the ferrule is moved to the other longitudinal direction side with respect to the optical fiber, and the optical fiber is optically connected to the optical element.
  3. 　光ファイバと、
    　前記光ファイバに貫通され、前記光ファイバを固定する固定部材と、
    　前記光ファイバに挿入され、前記光ファイバに対して長手方向に移動可能なフェルールと、
    　前記光ファイバを前記固定部材を介して固定し、前記光ファイバと前記フェルールと前記固定部材とを収容するハウジングとを備え、
    　前記光ファイバの長手方向一端面は、前記フェルールの長手方向一端面より長手方向他方側に位置することにより、前記フェルールで覆われる、光ファイバ部材。     an optical fiber;
    a fixing member penetrating the optical fiber and fixing the optical fiber;
    a ferrule inserted into the optical fiber and longitudinally movable relative to the optical fiber;
    a housing that fixes the optical fiber via the fixing member and accommodates the optical fiber, the ferrule, and the fixing member;
    An optical fiber member, wherein one longitudinal end face of the optical fiber is positioned on the other longitudinal side of the one longitudinal end face of the ferrule and thus covered with the ferrule.
PCT/JP2022/014467 2021-03-30 2022-03-25 Optical fiber member, method for manufacturing same, and method for manufacturing optical connector structure WO2022210371A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04123009A (en) * 1990-09-14 1992-04-23 Babcock Hitachi Kk Method and device for cutting linear
JPH11271568A (en) * 1998-03-25 1999-10-08 Hosiden Corp Plug of optical connector, socket of optical connector, and optical connector
JP2002250822A (en) * 2001-02-22 2002-09-06 Mitsubishi Rayon Co Ltd End face treating method, end face treating holder and end face treating device for optical fiber
US20030103278A1 (en) * 2001-10-15 2003-06-05 Nikolaus Schunk Optoelectronic module and method for its production
JP2004264731A (en) * 2003-03-04 2004-09-24 Sharp Corp Method for processing end face of plastic optical fiber, and method for splicing plastic optical fiber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04123009A (en) * 1990-09-14 1992-04-23 Babcock Hitachi Kk Method and device for cutting linear
JPH11271568A (en) * 1998-03-25 1999-10-08 Hosiden Corp Plug of optical connector, socket of optical connector, and optical connector
JP2002250822A (en) * 2001-02-22 2002-09-06 Mitsubishi Rayon Co Ltd End face treating method, end face treating holder and end face treating device for optical fiber
US20030103278A1 (en) * 2001-10-15 2003-06-05 Nikolaus Schunk Optoelectronic module and method for its production
JP2004264731A (en) * 2003-03-04 2004-09-24 Sharp Corp Method for processing end face of plastic optical fiber, and method for splicing plastic optical fiber

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