JP2008292707A - Structure and method for positioning optical fiber - Google Patents

Structure and method for positioning optical fiber Download PDF

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Publication number
JP2008292707A
JP2008292707A JP2007137197A JP2007137197A JP2008292707A JP 2008292707 A JP2008292707 A JP 2008292707A JP 2007137197 A JP2007137197 A JP 2007137197A JP 2007137197 A JP2007137197 A JP 2007137197A JP 2008292707 A JP2008292707 A JP 2008292707A
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optical fiber
blade
positioning
positioning structure
blade member
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Japanese (ja)
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Kenichiro Otsuka
健一郎 大塚
Maki Omura
真樹 大村
Mitsuaki Tamura
充章 田村
Mitsuru Kihara
満 木原
Hitoshi Son
均 孫
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Nippon Telegraph and Telephone Corp
Sumitomo Electric Industries Ltd
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Nippon Telegraph and Telephone Corp
Sumitomo Electric Industries Ltd
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Priority to JP2007137197A priority Critical patent/JP2008292707A/en
Priority to PCT/JP2008/058679 priority patent/WO2008143037A1/en
Priority to TW97118947A priority patent/TW200914902A/en
Publication of JP2008292707A publication Critical patent/JP2008292707A/en
Pending legal-status Critical Current

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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
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2555—Alignment or adjustment devices for aligning prior to splicing
    • G02B6/2556—Alignment or adjustment devices for aligning prior to splicing including a fibre supporting member inclined to the bottom surface of the alignment means

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure and method for positioning an optical fiber, capable of accurately positioning the optical fiber with a simple constitution. <P>SOLUTION: In the same cross section orthogonal to the axial line CL of the optical fiber 11, the blade edges 21 of a cutting member 20 are brought into contact with a plurality of circumferential positions of the glass part 12 of the optical fiber 11, then, the glass part 12 of the optical fiber 11 is positioned. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、光ファイバの位置決め構造及び光ファイバの位置決め方法に関する。   The present invention relates to an optical fiber positioning structure and an optical fiber positioning method.

光ファイバのコア（光軸）を精度良く位置決めする方法としては、一般的に光ファイバの被覆を除去して、無水アルコール等のついた脱脂綿で清掃した後に、高精度でかつある程度長さを有するＶ溝や丸穴等に挿入し、位置決めを行っていた。このような方法では光ファイバの被覆を除去する必要があるが、光ファイバの被覆を除去することなく光ファイバの位置決めを行うことができる光ファイバ位置決め方法及び光接続器具が提案されている（例えば特許文献１参照）。   As a method for accurately positioning the core (optical axis) of the optical fiber, it is generally highly accurate and has a certain length after removing the coating of the optical fiber and cleaning it with absorbent cotton with anhydrous alcohol. It was inserted into a V-groove or a round hole and positioned. In such a method, it is necessary to remove the coating of the optical fiber. However, an optical fiber positioning method and an optical connecting device capable of positioning the optical fiber without removing the coating of the optical fiber have been proposed (for example, Patent Document 1).

特許文献１に記載の光接続器具を図６に示す。
図６に示す光接続器具１００は、接続器本体１０１と蓋部材１０２とを有している。接続器本体１０１は、光ファイバ（図示省略）を案内し光ファイバを幅方向に位置規制する溝１０３ａを有するガイド部１０３と、このガイド部１０３と繋がり光ファイバの先端を挿入するファイバ孔１０４とを備えている。蓋部材１０２は、接続器本体１０１の溝１０３ａの上方から嵌合装着されて光ファイバを溝１０３ａに向けて押圧すると共に溝１０３ａに沿って移動可能に設けられている。 FIG. 6 shows an optical connecting device described in Patent Document 1. In FIG.
An optical connecting device 100 shown in FIG. 6 includes a connector main body 101 and a lid member 102. The connector main body 101 has a guide portion 103 having a groove 103a for guiding an optical fiber (not shown) and restricting the position of the optical fiber in the width direction, and a fiber hole 104 connected to the guide portion 103 to insert the tip of the optical fiber. It has. The lid member 102 is fitted and mounted from above the groove 103a of the connector main body 101 so as to press the optical fiber toward the groove 103a and to be movable along the groove 103a.

光ファイバの位置決めを行う際には、接続器本体１０１のガイド部１０３の溝１０３ａに多心の光ファイバを挿入した後、ガイド部１０３に蓋部材１０２を装着することによって、挿入した多心の光ファイバを溝１０３ａの底面に一列に所定の配列ピッチで整列させて、位置決めを行う。   When positioning the optical fiber, the multi-fiber optical fiber is inserted into the groove 103a of the guide portion 103 of the connector main body 101, and then the lid member 102 is attached to the guide portion 103 so that the inserted multi-fiber is inserted. The optical fibers are aligned with a predetermined arrangement pitch in a line on the bottom surface of the groove 103a to perform positioning.

特開２００６−１６３２１０号公報JP 2006-163210 A

しかしながら、従来の位置決め用の溝や丸穴等は、光ファイバの長手方向に数ｍｍ程度の長さは接触する必要があるために、表面の凹凸等をできるだけ少なくするのみならず、軸方向の真直度も要求される。このため、高精度の部品成形が要求され、光ファイバの位置決め部品としてコストがかかり易い。   However, since conventional positioning grooves and round holes need to be in contact with each other with a length of about several millimeters in the longitudinal direction of the optical fiber, not only the surface irregularities are reduced as much as possible, but also in the axial direction. Straightness is also required. For this reason, high-precision component molding is required, and it tends to be costly as an optical fiber positioning component.

そこで、本発明の目的は、簡易な構成で精度良く光ファイバの位置決めを行うことができる光ファイバの位置決め構造及び位置決め方法を提供することにある。   SUMMARY OF THE INVENTION An object of the present invention is to provide an optical fiber positioning structure and positioning method capable of accurately positioning an optical fiber with a simple configuration.

前記課題を解決することのできる本発明に係る光ファイバの位置決め構造は、光ファイバの軸線に直交する同一断面内において、前記光ファイバの周方向の複数箇所に刃先が当接する刃部材により、前記光ファイバが位置決めされることを特徴とする。   The optical fiber positioning structure according to the present invention capable of solving the above-mentioned problems is obtained by using the blade member whose blade edge abuts at a plurality of locations in the circumferential direction of the optical fiber in the same cross section orthogonal to the axis of the optical fiber. An optical fiber is positioned.

本発明に係る光ファイバの位置決め構造において、前記刃先の角度が２０°以上６０°以下で、当該刃先の先端が半径２０μｍ以上１２５μｍ以下の円弧状に面取りされていることが好ましい。   In the optical fiber positioning structure according to the present invention, it is preferable that the angle of the cutting edge is 20 ° or more and 60 ° or less, and the tip of the cutting edge is chamfered in an arc shape having a radius of 20 μm or more and 125 μm or less.

また、本発明に係る光ファイバの位置決め構造において、前記刃部材はプラスチックからなり、前記刃部材の弾性率が０．１×１０10Ｎ／ｍ２以上１．０×１０10Ｎ／ｍ２以下であることが好ましい。 Further, in the optical fiber positioning structure according to the present invention, the blade member is made of plastic, and the elastic modulus of the blade member is 0.1 × 10 10 N / m 2 or more and 1.0 × 10 10 N / m 2 or less. It is preferable that

また、本発明に係る光ファイバの位置決め方法は、光ファイバの軸線に直交する同一断面内において、前記光ファイバの周方向の複数箇所に刃部材の刃先を当接させて、前記光ファイバを位置決めすることを特徴とする。   In the optical fiber positioning method according to the present invention, the optical fiber is positioned by bringing a blade edge of a blade member into contact with a plurality of locations in the circumferential direction of the optical fiber in the same cross section orthogonal to the axis of the optical fiber. It is characterized by doing.

本発明によれば、刃部材の刃先を光ファイバの周方向の複数箇所に当接させることで位置決めを行なうため、刃部材の高い寸法精度は必要とされず、従来の位置決め用の溝や丸穴等のように光ファイバの長手方向に沿った位置決め部材を使用する場合と比較して、簡易かつ安価な構成で精度良く位置決めを行なうことができる。また、刃部材をプラスチック製にした場合には、光ファイバのガラスを傷付けずに位置決めできる。   According to the present invention, since positioning is performed by bringing the blade edge of the blade member into contact with a plurality of locations in the circumferential direction of the optical fiber, high dimensional accuracy of the blade member is not required, and conventional positioning grooves and rounds are not required. Compared with a case where a positioning member along the longitudinal direction of the optical fiber such as a hole is used, positioning can be performed with a simple and inexpensive configuration with high accuracy. In addition, when the blade member is made of plastic, it can be positioned without damaging the glass of the optical fiber.

以下、本発明に係る光ファイバの位置決め構造及び位置決め方法の実施形態の例を、図面を参照しつつ説明する。
図１（Ａ）は第１実施形態に係る光ファイバの位置決め構造を示す断面図、図１（Ｂ）は図１（Ａ）中Ｂ方向から見た平面図、図２（Ａ）はプラスチック製刃部材の刃先の形状の一例を示す厚さ方向の断面図、図２（Ｂ）はプラスチック製刃部材の刃先の形状の別の例を示す厚さ方向の断面図、図３（Ａ）及び（Ｂ）は本発明に係る光ファイバの位置決め構造を用いて光ファイバの接続を行う場合の一例を示す側面図、図４（Ａ）はガラス部が被覆から突出する切断方法の説明図、図４（Ｂ）は被覆の端部の拡大断面図である。 Hereinafter, an example of an embodiment of an optical fiber positioning structure and positioning method according to the present invention will be described with reference to the drawings.
1A is a cross-sectional view showing an optical fiber positioning structure according to the first embodiment, FIG. 1B is a plan view seen from the direction B in FIG. 1A, and FIG. 2A is made of plastic. Cross-sectional view in the thickness direction showing an example of the shape of the blade edge of the blade member, FIG. 2B is a cross-sectional view in the thickness direction showing another example of the shape of the blade edge of the plastic blade member, FIG. (B) is a side view showing an example of connecting an optical fiber using the optical fiber positioning structure according to the present invention, FIG. 4 (A) is an explanatory view of a cutting method in which the glass part protrudes from the coating, and FIG. 4 (B) is an enlarged cross-sectional view of the end of the coating.

図１（Ａ）及び（Ｂ）に示すように、本発明の第１実施形態に係る光ファイバの位置決め構造１０は、光ファイバ１１の軸線ＣＬに直交する同一断面内において当該光ファイバ１１の位置決めを行うものであり、光ファイバ１１のガラス部１２における周方向の複数箇所に刃先２１が当接するプラスチック製の刃部材２０を有するものである。   As shown in FIGS. 1A and 1B, the optical fiber positioning structure 10 according to the first embodiment of the present invention positions the optical fiber 11 in the same cross section perpendicular to the axis CL of the optical fiber 11. And has a plastic blade member 20 with which the blade edge 21 abuts at a plurality of circumferential positions in the glass portion 12 of the optical fiber 11.

光ファイバの位置決め構造１０は、図１（Ａ）に示すように、２つの刃先２１，２１がＶ字形状に配置された１個の刃部材２０が設けられており、光ファイバ１１を図１（Ａ）中上方から２つの刃先２１，２１間に押し込む。これにより、光ファイバ１１が被覆１３を有する場合には、刃部材２０の刃先２１は、被覆１３を切れ込むように貫通して、ガラス部１２の外周に当接する。なお、Ｖ字形状に配置された２つの刃先２１，２１は、１個の刃部材２０に形成しても良いが、各々１個の刃先２１を有する２つのプラスチック製刃部材によって刃先２１をＶ字形状に配置するようにしてもよい。   As shown in FIG. 1A, the optical fiber positioning structure 10 is provided with one blade member 20 in which two blade edges 21 and 21 are arranged in a V-shape, and the optical fiber 11 is connected to the optical fiber 11 in FIG. (A) Push in between the two cutting edges 21 and 21 from the middle upper side. Thereby, when the optical fiber 11 has the coating 13, the blade edge 21 of the blade member 20 penetrates so as to cut the coating 13 and comes into contact with the outer periphery of the glass portion 12. The two cutting edges 21 and 21 arranged in a V shape may be formed on one blade member 20, but the cutting edge 21 is made V by two plastic blade members each having one cutting edge 21. It may be arranged in a letter shape.

刃部材２０は、図２に示すように、刃先２１の角度αが２０°以上６０°以下で、当該刃先２１の先端が半径Ｒ＝２０μｍ以上１２５μｍ以下の円弧状に面取りされていることが好ましい。なお、図２（Ａ）は刃先２１の両側にテーパ面２１ａ，２１ａが設けられている場合（すなわち両刃形状）であり、図２（Ｂ）は刃先２１の一方にのみテーパ面２１ａが設けられている場合（すなわち片刃形状）である。   As shown in FIG. 2, the blade member 20 is preferably chamfered in an arc shape in which the angle α of the blade edge 21 is 20 ° to 60 ° and the tip of the blade edge 21 has a radius R = 20 μm to 125 μm. . 2A shows a case where tapered surfaces 21a, 21a are provided on both sides of the blade edge 21 (that is, a double-edged shape), and FIG. 2B shows that only one of the blade edges 21 has a tapered surface 21a. (Ie, a single-edged shape).

すなわち、刃先２１の角度αが２０°以下の場合には刃先２１の強度が不足することになり不適当である。一方、刃先２１の角度αが６０°以上の場合には、被覆１３を切り裂くための鋭利さが不十分である。また、刃先２１の先端の面取りにおいて、半径αが２０μｍ以下の場合には、刃先２１の強度が弱く、被覆１３を切り裂く前に破損するおそれがある。一方、面取りの半径αが１２５μｍ以上の場合には、被覆１３を切り裂くための鋭利さが不十分となる。   That is, when the angle α of the blade edge 21 is 20 ° or less, the strength of the blade edge 21 is insufficient, which is inappropriate. On the other hand, when the angle α of the blade edge 21 is 60 ° or more, the sharpness for tearing the coating 13 is insufficient. Further, in the chamfering of the tip of the blade edge 21, when the radius α is 20 μm or less, the strength of the blade edge 21 is weak, and there is a possibility that the cover 13 is broken before being cut. On the other hand, when the chamfer radius α is 125 μm or more, the sharpness for cutting the coating 13 becomes insufficient.

したがって、刃先角度αを２０°以上６０°以下とすることにより、被覆１３を切り裂いて刃先２１がガラス部１２に達するため、ガラス部１２の位置決めを行うことができる。また、刃先２１の先端の面取り半径Ｒを２０μｍ以上１２５μｍ以下とすることにより、刃先２１がガラス部１２に当接した際に、ガラス部１２を傷付けるのを防止することができる。   Therefore, by setting the blade edge angle α to 20 ° or more and 60 ° or less, the coating 13 is cut and the blade edge 21 reaches the glass portion 12, so that the glass portion 12 can be positioned. In addition, by setting the chamfer radius R of the tip of the blade edge 21 to 20 μm or more and 125 μm or less, it is possible to prevent the glass portion 12 from being damaged when the blade edge 21 abuts on the glass portion 12.

また、プラスチック製の刃部材２０の弾性率が０．１×１０10Ｎ／ｍ２以上１．０×１０10Ｎ／ｍ２以下であることが好ましい。すなわち、刃部材２０を被覆１３の材質よりも硬く、例えばナイロン程度よりも軟らかくする。
したがって、刃部材２０の弾性率をこの範囲内とすることにより、被覆１３を切り裂いて刃先２１がガラス部１２に達することができるとともに、刃先２１がガラス部１２に当接した際に、ガラス部１２を傷付けることを防止することができる。 Further, the elastic modulus of the plastic blade member 20 is preferably 0.1 × 10 10 N / m 2 or more and 1.0 × 10 10 N / m 2 or less. That is, the blade member 20 is made harder than the material of the coating 13, for example, softer than nylon.
Therefore, by setting the elastic modulus of the blade member 20 within this range, the coating 13 can be cut and the blade edge 21 can reach the glass portion 12, and when the blade edge 21 comes into contact with the glass portion 12, the glass portion 12 can be prevented from being damaged.

次に、光ファイバの位置決め方法の例について説明する。
図１に示すように、本実施形態の光ファイバの位置決め方法では、光ファイバ１１の軸線ＣＬに直交する同一断面内において、光ファイバ１１のガラス部１２における周方向の複数箇所（ここでは、２つ）に刃部材２０の刃先２１を当接させて、光ファイバ１１のガラス部１２を位置決めする。すなわち、所定位置に設けられた刃部材２０に光ファイバ１１を径方向に押し込んで、複数個の刃先２１によって被覆１３を切り裂くとともに、刃先２１の先端をガラス部１２に当接させる。これにより、ガラス部１２を周方向の複数点で支持して、位置決めを行う。 Next, an example of an optical fiber positioning method will be described.
As shown in FIG. 1, in the optical fiber positioning method of the present embodiment, in the same cross section orthogonal to the axis CL of the optical fiber 11, a plurality of circumferential positions in the glass portion 12 of the optical fiber 11 (here, 2 The blade edge 21 of the blade member 20 is brought into contact with the glass member 12 to position the glass portion 12 of the optical fiber 11. That is, the optical fiber 11 is pushed in a radial direction into the blade member 20 provided at a predetermined position, the coating 13 is cut by the plurality of blade edges 21, and the tip of the blade edge 21 is brought into contact with the glass portion 12. Thereby, the glass part 12 is supported at a plurality of points in the circumferential direction for positioning.

図３（Ａ）及び（Ｂ）に、前記本発明に係る光ファイバの位置決め構造及び位置決め方法を利用した光ファイバ１１の接続状態の一例を示す。
図３（Ａ）に示す接続状態においては、接続する両方の光ファイバ１１，１１を各々刃部材２０，２０によって位置決めして支持している。光ファイバ１１，１１の端部ではガラス部１２が突出しており、ガラス部１２，１２の端面１２ａ，１２ａ同士を突き合わせて接続することができる。なお、ガラス部１２，１２の端面１２ａ，１２ａ間に屈折率整合剤のゼリーかフィルムを介在させても良い。なお、光ファイバ１１，１１を支持している両方の刃部材２０，２０を光ファイバ１１の軸方向（図３において左右方向）へ水平移動可能にしておき、光ファイバ１１を支持している刃部材２０，２０を相互に接近させることにより、両端面１２ａ，１２ａを突き合わせて接続することができる。 3A and 3B show an example of the connection state of the optical fiber 11 using the optical fiber positioning structure and positioning method according to the present invention.
In the connected state shown in FIG. 3A, both optical fibers 11 and 11 to be connected are positioned and supported by the blade members 20 and 20, respectively. The glass part 12 protrudes in the edge part of the optical fibers 11 and 11, and the end surfaces 12a and 12a of the glass parts 12 and 12 can be faced | matched and connected. Note that a refractive index matching agent jelly or a film may be interposed between the end faces 12a, 12a of the glass portions 12, 12. Note that both blade members 20 and 20 supporting the optical fibers 11 and 11 are horizontally movable in the axial direction of the optical fiber 11 (left and right in FIG. 3), and the blades supporting the optical fiber 11 are supported. By bringing the members 20 and 20 close to each other, both end faces 12a and 12a can be butted and connected.

また、図３（Ａ）に示すように光ファイバ１１の端部においてガラス部１２を突出させるには、図４（Ａ）に示すように、光ファイバ１１を両側に引っ張って張力を付与して、この状態で切断用の刃１４によってガラス部１２に傷を付けて破断させることにより光ファイバ１１を切断すれば良い。これにより、被覆１３が伸びた状態で切断され、図４（Ｂ）に示すように、被覆１３の端部がジャバラ状（ジャバラ部１３ａ）に縮むため、ガラス部１２の端部１２ｂが突出することになる。   Further, as shown in FIG. 3 (A), in order to project the glass portion 12 at the end of the optical fiber 11, as shown in FIG. 4 (A), the optical fiber 11 is pulled to both sides to apply tension. In this state, the optical fiber 11 may be cut by scratching and breaking the glass portion 12 with the cutting blade 14. As a result, the coating 13 is cut in an extended state, and as shown in FIG. 4B, the end of the coating 13 shrinks into a bellows shape (bellows 13a), so that the end 12b of the glass portion 12 protrudes. It will be.

なお、図３（Ｂ）に示すように、光ファイバ１１の端部においてガラス部１２が被覆１３から突出していない場合でも、図３（Ａ）の場合と同様に接続することができる。   As shown in FIG. 3B, even when the glass portion 12 does not protrude from the coating 13 at the end of the optical fiber 11, the connection can be made in the same manner as in FIG.

以上説明した光ファイバの位置決め構造及びその位置決め方法によれば、刃部材２０の複数の刃先２１が光ファイバ１１のガラス部１２に周方向の複数箇所で当接し、ガラス部１２の外周面を基準として位置決めするため、光ファイバ１１の位置決め（特に、ガラス部１２の位置決め）を、簡易かつ安価な構成により高精度で行うことができる。   According to the optical fiber positioning structure and the positioning method described above, the plurality of cutting edges 21 of the blade member 20 abut on the glass portion 12 of the optical fiber 11 at a plurality of locations in the circumferential direction, and the outer peripheral surface of the glass portion 12 is used as a reference. Therefore, the positioning of the optical fiber 11 (particularly, the positioning of the glass portion 12) can be performed with high accuracy by a simple and inexpensive configuration.

また、図４（Ｂ）において説明したように、被覆１３がジャバラ状に凹凸していても、前記刃部材２０によれば、被覆１３を切り裂いて位置決めするため、被覆１３が平坦な場合と同様に支持することができるとともに、ガラス部１２を基準として位置決めしているため、高精度の位置決めができることになる。   Further, as described in FIG. 4B, even when the coating 13 is uneven in a bellows shape, the blade member 20 cuts and positions the coating 13, which is the same as when the coating 13 is flat. In addition, since the glass portion 12 is positioned on the basis of the positioning, highly accurate positioning can be performed.

次に、本発明に係る光ファイバの位置決め構造の第２実施形態について説明する。
図５（Ａ）及び（Ｂ）は本発明の第２実施形態に係る光ファイバの位置決め構造を示す断面図である。なお、前述した第１実施形態と共通する部位には同じ符号を付して、重複する説明を省略する。 Next, a second embodiment of the optical fiber positioning structure according to the present invention will be described.
5A and 5B are cross-sectional views showing an optical fiber positioning structure according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the site | part which is common in 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.

図５（Ａ）及び（Ｂ）に示すように、第２実施形態に係る光ファイバの位置決め構造１０Ａでは、先端に刃先２１を有する３つの刃部材２０Ａを有している。各刃部材２０Ａは、刃先２１が円周の３等分の位置（すなわち、１２０度間隔）でガラス部１２に当接するように配置するとよい。この場合には、周方向にバランスの取れた３箇所で刃先２１によって支持されているため、径方向への位置ずれが確実に防止される。   As shown in FIGS. 5A and 5B, the optical fiber positioning structure 10A according to the second embodiment has three blade members 20A each having a blade edge 21 at the tip. Each blade member 20A is preferably arranged so that the blade edge 21 abuts on the glass portion 12 at a position equal to three circumferences (that is, at intervals of 120 degrees). In this case, since it is supported by the blade edge 21 at three locations balanced in the circumferential direction, positional deviation in the radial direction is reliably prevented.

光ファイバ１１の位置決めを行う場合には、図５（Ａ）に示すように、光ファイバ１１の被覆１３の外周面の３箇所において刃部材２０の刃先２１を当てて、図５（Ｂ）に示すように３つの刃先２１をそれぞれ被覆１３に押し込む。これによって、刃先２１は被覆１３を切り裂いてガラス部１２に達し、ガラス部１２は３方から刃先２１によって位置決めされるとともに、支持されることになる。   When positioning the optical fiber 11, as shown in FIG. 5 (A), the blade tip 21 of the blade member 20 is applied at three locations on the outer peripheral surface of the coating 13 of the optical fiber 11, and FIG. As shown, the three cutting edges 21 are each pushed into the coating 13. As a result, the blade edge 21 cuts the coating 13 and reaches the glass portion 12, and the glass portion 12 is positioned and supported by the blade edge 21 from three directions.

なお、前述した各実施形態においては、被覆１３付きの光ファイバ１１の位置決めについて説明したが、本発明に係る光ファイバの位置決め構造及び位置決め方法は、被覆のないガラス部のみの光ファイバにも適用可能である。
また、前述した実施形態においては、刃先２１によってガラス部１２の２箇所又は３箇所を支持して位置決めしている場合について説明したが、４箇所以上支持して位置決めすることも可能である。 In each of the above-described embodiments, the positioning of the optical fiber 11 with the coating 13 has been described. However, the positioning structure and positioning method of the optical fiber according to the present invention are also applied to an optical fiber having only a glass portion without coating. Is possible.
In the above-described embodiment, the case where the blade edge 21 supports and positions two or three portions of the glass portion 12 has been described, but it is also possible to support and position four or more locations.

（Ａ）は本発明の第１実施形態に係る光ファイバの位置決め構造を示す断面図、（Ｂ）は図１（Ａ）中Ｂ方向から見た平面図である。(A) is sectional drawing which shows the positioning structure of the optical fiber which concerns on 1st Embodiment of this invention, (B) is the top view seen from B direction in FIG. 1 (A). （Ａ）はプラスチック製刃部材の刃先の形状の一例を示す断面図、（Ｂ）はプラスチック製刃部材の刃先の形状の別の例を示す断面図である。(A) is sectional drawing which shows an example of the shape of the blade edge | tip of a plastic blade member, (B) is sectional drawing which shows another example of the shape of the blade edge | tip of a plastic blade member. （Ａ）及び（Ｂ）は本発明に係る光ファイバの位置決め構造を用いて光ファイバの接続を行う場合の例を示す側面図である。(A) And (B) is a side view which shows the example in the case of connecting an optical fiber using the positioning structure of the optical fiber which concerns on this invention. （Ａ）はガラス部が突出する切断方法の説明図、（Ｂ）は被覆の端部の拡大断面図である。(A) is explanatory drawing of the cutting method from which a glass part protrudes, (B) is an expanded sectional view of the edge part of coating | cover. （Ａ）は本発明の第２実施形態にかかる光ファイバの位置決め構造及び位置決め方法の一工程を示す断面図、（Ｂ）は位置決めした状態を示す断面図である。(A) is sectional drawing which shows 1 process of the positioning structure and positioning method of the optical fiber concerning 2nd Embodiment of this invention, (B) is sectional drawing which shows the state which positioned. 従来の位置決め構造を有する光接続器具の例を示す概略図である。It is the schematic which shows the example of the optical connection instrument which has the conventional positioning structure.

符号の説明Explanation of symbols

１０，１０Ａ 位置決め構造
１１ 光ファイバ
１２ ガラス部
２０，２０Ａ プラスチック製刃部材
２１ 刃先
ＣＬ 軸線
α 刃先の角度
Ｒ 刃先の先端 10, 10A Positioning structure 11 Optical fiber 12 Glass part 20, 20A Plastic blade member 21 Cutting edge CL axis α Cutting edge angle R Cutting edge tip

Claims (4)

光ファイバの軸線に直交する同一断面内において、前記光ファイバの周方向の複数箇所に刃先が当接する刃部材により、前記光ファイバが位置決めされることを特徴とする光ファイバの位置決め構造。   A positioning structure for an optical fiber, wherein the optical fiber is positioned by a blade member whose blade tip abuts at a plurality of locations in the circumferential direction of the optical fiber in the same cross section perpendicular to the axis of the optical fiber. 請求項１に記載の光ファイバの位置決め構造であって、
前記刃先の角度が２０°以上６０°以下で、当該刃先の先端が半径２０μｍ以上１２５μｍ以下の円弧状に面取りされていることを特徴とする光ファイバの位置決め構造。 The optical fiber positioning structure according to claim 1,
An optical fiber positioning structure, wherein an angle of the blade edge is 20 ° to 60 °, and a tip of the blade edge is chamfered in an arc shape having a radius of 20 μm to 125 μm. 請求項１または２に記載の光ファイバの位置決め構造であって、
前記刃部材はプラスチックからなり、前記刃部材の弾性率が０．１×１０10Ｎ／ｍ２以上１０×１０10Ｎ／ｍ２以下であることを特徴とする光ファイバの位置決め構造。 An optical fiber positioning structure according to claim 1 or 2,
The optical fiber positioning structure, wherein the blade member is made of plastic, and the elastic modulus of the blade member is 0.1 × 10 10 N / m 2 or more and 10 × 10 10 N / m 2 or less. 光ファイバの軸線に直交する同一断面内において、前記光ファイバの周方向の複数箇所に刃部材の刃先を当接させて、前記光ファイバを位置決めすることを特徴とする光ファイバの位置決め方法。   An optical fiber positioning method comprising positioning the optical fiber by bringing a blade edge of a blade member into contact with a plurality of circumferential positions of the optical fiber in the same cross section perpendicular to the axis of the optical fiber.
JP2007137197A 2007-05-23 2007-05-23 Structure and method for positioning optical fiber Pending JP2008292707A (en)

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PCT/JP2008/058679 WO2008143037A1 (en) 2007-05-23 2008-05-09 Structure and method for positioning optical fiber
TW97118947A TW200914902A (en) 2007-05-23 2008-05-22 Structure and method for positioning optical fiber

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JP2011033731A (en) * 2009-07-30 2011-02-17 Fujikura Ltd Optical connector
JP2012208373A (en) * 2011-03-30 2012-10-25 Furukawa Electric Co Ltd:The Fiber cutter and fiber cutting method

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JPH087370Y2 (en) * 1990-07-03 1996-03-04 富士通株式会社 Optical fiber cable connection member
JP3675991B2 (en) * 1996-10-18 2005-07-27 株式会社フジクラ Optical fiber connection mechanism and optical connector using the same
JP3529267B2 (en) * 1998-07-09 2004-05-24 アルプス電気株式会社 Optical fiber fixing device
JP2000221363A (en) * 1999-02-03 2000-08-11 Fujitsu Takamisawa Component Ltd Multi-fiber optical connector
JP4192751B2 (en) * 2003-10-17 2008-12-10 住友電気工業株式会社 Optical fiber connector and optical fiber connection method
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JP2011033731A (en) * 2009-07-30 2011-02-17 Fujikura Ltd Optical connector
JP2012208373A (en) * 2011-03-30 2012-10-25 Furukawa Electric Co Ltd:The Fiber cutter and fiber cutting method

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