JP2003066279A - Multifiber optical connector - Google Patents
Multifiber optical connectorInfo
- Publication number
- JP2003066279A JP2003066279A JP2001258374A JP2001258374A JP2003066279A JP 2003066279 A JP2003066279 A JP 2003066279A JP 2001258374 A JP2001258374 A JP 2001258374A JP 2001258374 A JP2001258374 A JP 2001258374A JP 2003066279 A JP2003066279 A JP 2003066279A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- guide pin
- core optical
- face
- optical connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、光通信等に使用さ
れる、光ファイバ固定具に挿通保持された多芯光ファイ
バを光結合させる結合端面を有する多芯光コネクタに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-core optical connector used for optical communication or the like and having a coupling end face for optically coupling a multi-core optical fiber inserted and held in an optical fiber fixture.
【０００２】[0002]
【従来の技術】従来、光ファイバ固定具の貫通孔に挿通
保持された多芯光ファイバを、上記光ファイバ固定具の
結合端面で接触させて光ファイバ同士を光結合させる多
芯光コネクタは、光通信等の光信号処理に用いられ、半
導体レーザと光ファイバ等から構成される半導体レーザ
モジュール等に用いられている。2. Description of the Related Art Conventionally, a multi-core optical connector for optically coupling optical fibers to each other by bringing a multi-core optical fiber inserted through and held in a through hole of an optical fiber fixture into contact with the coupling end face of the optical fiber fixture is known. It is used for optical signal processing such as optical communication and is used for a semiconductor laser module and the like composed of a semiconductor laser and an optical fiber.
【０００３】かかる多芯光コネクタは、図３に示すよう
にエポキシ樹脂等のプラスチックスや金属等からなり、
その中心に複数の貫通孔１３を有する光ファイバ固定具
１２と、該光ファイバ固定具１２の貫通孔１３に接着剤
を介して多芯光ファイバ１４が挿通保持され、貫通孔１
３の開口部を有する光ファイバ固定具１２の結合端面１
７には、２本のガイドピン１８が嵌合するガイドピン穴
１５が設けられている。As shown in FIG. 3, such a multi-core optical connector is made of plastic such as epoxy resin or metal,
An optical fiber fixing tool 12 having a plurality of through holes 13 in the center thereof, and a multi-core optical fiber 14 inserted and held in the through hole 13 of the optical fiber fixing tool 12 via an adhesive,
Coupling end face 1 of optical fiber fixture 12 having three openings
7 is provided with a guide pin hole 15 into which two guide pins 18 are fitted.
【０００４】一対の多芯光コネクタ同士を接続する際
は、その位置決めとして上記２つのガイドピン穴１５
に、非常に寸法精度の高い２本のガイドピン１８をそれ
ぞれ嵌合し、この２本のガイドピン１８をもう一方多芯
光コネクタ１１の光ファイバ固定具１２に設けられた２
つのガイドピン穴１５に嵌合することによって、高精度
に位置決めされた多芯光ファイバを光結合している。When connecting a pair of multi-core optical connectors to each other, the two guide pin holes 15 are used for positioning.
To the optical fiber fixture 12 of the multi-core optical connector 11 by fitting the two guide pins 18 with extremely high dimensional accuracy to each other.
By fitting the two guide pin holes 15, the multi-core optical fiber positioned with high precision is optically coupled.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
多芯光コネクタは、一対の多芯光コネクタを接続する
際、２つのガイドピン穴１５に２本のガイドピン１８を
嵌合することによって多芯光ファイバ１４を位置決めし
て光結合させることから、各ガイドピン穴１５の位置精
度が各製造公差の累積によって低下しやすく、多芯光フ
ァイバ１４の接続損失が１．０ｄＢ以上の高い値となり
やすいという欠点を有している。However, in the conventional multi-core optical connector, when the pair of multi-core optical connectors are connected, two guide pins 18 are fitted into the two guide pin holes 15 so that the multi-core optical connector can be multi-core. Since the core optical fiber 14 is positioned and optically coupled, the positional accuracy of each guide pin hole 15 is likely to decrease due to the accumulation of manufacturing tolerances, and the connection loss of the multicore optical fiber 14 becomes a high value of 1.0 dB or more. It has the drawback of being easy.
【０００６】また、ガイドピン穴１５とガイドピン１８
は非常に高い加工精度が要求されるために加工費用が高
くなり、多芯光コネクタ１１を高価なものにしており、
２つのガイドピン穴１５が光ファイバ固定具１２の結合
端面１７に占めている面積が大きく光部品の小型化の要
求に対応できないという欠点を有していた。Further, the guide pin hole 15 and the guide pin 18
Requires a very high processing accuracy, resulting in high processing cost and making the multi-core optical connector 11 expensive.
The two guide pin holes 15 occupy the coupling end surface 17 of the optical fiber fixing tool 12 and have a large area, which cannot meet the demand for miniaturization of optical components.
【０００７】[0007]
【課題を解決するための手段】本発明の多芯光コネクタ
は、一対の光ファイバを光結合する結合端面を有する光
ファイバ固定具と、該光ファイバ固定具に挿通保持され
た多芯光ファイバとからなる多芯光コネクタでって、上
記光ファイバ固定具の少なくとも１ヶ所の回転防止平面
を設けるとともに、結合端面にガイドピンを嵌合する１
つのガイドピン取付け部を設けることを特徴とするもの
である。A multicore optical connector of the present invention is an optical fiber fixture having a coupling end face for optically coupling a pair of optical fibers, and a multicore optical fiber inserted and held in the optical fiber fixture. 1 is a multi-core optical connector which comprises at least one anti-rotation plane of the above-mentioned optical fiber fixture, and a guide pin is fitted to the coupling end face.
One guide pin mounting portion is provided.
【０００８】また、本発明の多芯光コネクタは、一対の
光ファイバを光結合する結合端面を有する光ファイバ固
定具と、該光ファイバ固定具に挿通保持された多芯光フ
ァイバとからなる多芯光コネクタであって、上記光ファ
イバ固定具に少なくとも１つの回転防止平面を設けると
ともに、結合端面が円形状をなし、その中心にガイドピ
ン穴を設けたことを特徴とするものである。Further, the multi-core optical connector of the present invention comprises a multi-core optical fiber having a coupling end face for optically coupling a pair of optical fibers, and a multi-core optical fiber inserted and held in the optical fiber fixture. A core optical connector, characterized in that at least one anti-rotation plane is provided on the optical fiber fixture, the coupling end face is circular, and a guide pin hole is provided at the center thereof.
【０００９】本発明の多芯光コネクタによれば、光ファ
イバ固定具に、少なくとも１ヶ所の回転防止平面を設け
るとともに、結合端面にガイドピンを嵌合する１つのガ
イドピン取付け部を設けたことから、一対の多芯光コネ
クタを精度良く接続することができ、ガイドピン穴の製
造公差の累積を抑えられるため光ファイバの接続損失を
減少させることが可能となり、しかもガイドピン穴が光
ファイバ固定具の結合端面に占めている面積が小さくな
るため小型が可能となる。According to the multi-core optical connector of the present invention, the optical fiber fixture is provided with at least one anti-rotation plane and one guide pin mounting portion for fitting the guide pin to the coupling end face. Therefore, it is possible to connect a pair of multi-core optical connectors with high accuracy, and it is possible to reduce the accumulation of manufacturing tolerance of the guide pin hole, so it is possible to reduce the connection loss of the optical fiber. Since the area occupied by the connecting end surface of the tool is reduced, the size can be reduced.
【００１０】また、本発明の多芯光コネクタによれば、
光ファイバ固定具に少なくとも１つの回転防止平面を設
けるとともに、結合端面が円形状をなし、その中心にガ
イドピン穴を設けたことから、円形状の中心位置は精度
良く求めることができるため、ガイドピン穴を形成する
際、容易に、且つ高精度な加工を行うことができ、一対
の多芯光コネクタを接続する際の接続損失をより小さな
ものとすることができる。According to the multi-core optical connector of the present invention,
Since the optical fiber fixture has at least one anti-rotation plane, the coupling end face has a circular shape, and the guide pin hole is provided at the center thereof, the center position of the circular shape can be accurately determined. When forming the pin hole, it is possible to easily and accurately perform processing, and it is possible to further reduce the connection loss when connecting the pair of multi-core optical connectors.
【００１１】[0011]
【発明の実施の形態】以下本発明の実施の形態を図面に
基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１（ａ）は、本発明の多芯光コネクタの
一実施形態を示す斜視図であり、図１（ｂ）は同図
（ａ）のＸ−Ｘ線における断面図である。FIG. 1A is a perspective view showing an embodiment of the multi-core optical connector of the present invention, and FIG. 1B is a sectional view taken along line XX in FIG. 1A.
【００１３】図１に示すように、本発明の多芯光コネク
タ１は、光ファイバ固定具２と、該光ファイバ固定具２
の貫通孔３に挿通保持された多芯光ファイバ４とからな
る。As shown in FIG. 1, a multicore optical connector 1 of the present invention comprises an optical fiber fixture 2 and the optical fiber fixture 2.
And a multi-core optical fiber 4 inserted and held in the through hole 3.
【００１４】上記光ファイバ固定具２は、多芯光ファイ
バ４の被覆部４ａを保持する第１貫通孔３ａと、これに
連続し多芯光ファイバ４の各素線４ｂを保持する複数の
孔からなる第２貫通孔３ｂ、ガイドピン８を嵌合するた
めの１つのガイドピン穴５及び回転防止平面６が形成さ
れている。The optical fiber fixture 2 has a first through hole 3a for holding the coating portion 4a of the multicore optical fiber 4 and a plurality of holes continuous with the first through hole 3a for holding each strand 4b of the multicore optical fiber 4. The second through hole 3b consisting of, the one guide pin hole 5 for fitting the guide pin 8 and the rotation preventing flat surface 6 are formed.
【００１５】また、上記光ファイバ固定具２の結合端面
７は、１つの回転防止平面６の端部を有する円形状とな
っており、ガイドピン穴５が円形状の結合端面７の中心
に設けられているため、プレス成形等の製造工程におい
て円形状の中心位置は一般的に精度良く求めることがで
きるため、ガイドピン穴５を形成する際、容易で、且つ
高精度に加工を行うことができる。Further, the coupling end face 7 of the optical fiber fixture 2 has a circular shape having an end of one rotation prevention plane 6, and a guide pin hole 5 is provided at the center of the circular coupling end face 7. Since the center position of the circular shape can be generally obtained with high accuracy in the manufacturing process such as press molding, it is possible to perform the processing easily and with high accuracy when forming the guide pin hole 5. it can.
【００１６】さらに、上記ガイドピン穴５は、１つであ
るため、一対の多芯光コネクタ１を接続する際、各々の
製造公差の累積が小さくでき、光ファイバ素線３ｂ同士
の位置決め精度を非常に高くすることができる。そのた
め、各多芯光ファイバ４の接続損失を減少させることが
でき、高精度な多芯光コネクタ１を得ることができる。Further, since the number of the guide pin holes 5 is one, when the pair of multi-core optical connectors 1 are connected, the manufacturing tolerance of each can be made small and the positioning accuracy of the optical fiber strands 3b can be improved. Can be very high. Therefore, the connection loss of each multicore optical fiber 4 can be reduced, and the highly accurate multicore optical connector 1 can be obtained.
【００１７】また、非常に高い精度が要求されるガイド
ピン穴５とガイドピン８が１つであるため、加工費用を
抑え、多芯光コネクタ１を安価に製造でき、さらに、上
記ガイドピン穴５が１つであるため、ガイドピン穴５が
光ファイバ固定具２の結合端面７に占める割合が小さく
なり、多芯光コネクタ１の小型化を実現することができ
る。Since only one guide pin hole 5 and one guide pin 8 are required for extremely high precision, the processing cost can be reduced, the multi-core optical connector 1 can be manufactured at low cost, and the guide pin hole can be manufactured. Since there is only one guide pin hole 5, the ratio of the guide pin hole 5 to the coupling end surface 7 of the optical fiber fixture 2 is small, and the multicore optical connector 1 can be miniaturized.
【００１８】上記光ファイバ固定具２は、液晶ポリマ、
エポキシ樹脂、ＰＢＴ、ＰＢＳ、ＰＥＴ等のプラスチッ
ク材料、ジルコニア、アルミナ、窒化珪素、炭化珪素、
窒化アルミニウム、コージュライト、ムライト等を主成
分とする結晶粒子を有するセラミックス、ほう珪酸ガラ
ス、結晶化ガラス等のガラス材料、ステンレス、銅合金
にニッケルメッキを施した等の金属材料等からなり、特
に、アルミナ、ジルコニア等の酸化物セラミックスから
なることがより好ましい。The optical fiber fixture 2 is a liquid crystal polymer,
Epoxy resin, plastic materials such as PBT, PBS, PET, zirconia, alumina, silicon nitride, silicon carbide,
Aluminum nitride, cordierite, ceramics having crystal particles containing mullite as a main component, borosilicate glass, glass materials such as crystallized glass, stainless steel, metal materials such as nickel-plated copper alloy, etc. More preferably, it is made of oxide ceramics such as alumina, zirconia and the like.
【００１９】これら酸化物セラミックスは、耐久性が高
く多芯光コネクタ１同士を接続させる際の押圧力によっ
ても、結合端面７の形状が保持され、高温高湿条件にお
いても形状の変化、材質の変化がなく長期間の使用に供
することができる。These oxide ceramics have high durability, and the shape of the coupling end face 7 is maintained even by the pressing force when connecting the multi-core optical connectors 1 to each other. It can be used for a long time without any change.
【００２０】また、上記酸化物セラミックスはヤング率
が４３０ＧＰａ以下であることが好ましく、多芯光コネ
クタ１同士を接続する際に結合端面７にかかる押圧力に
対しても変形することなく、接続損失の小さいＰＣ結合
が可能となり、さらに３点曲げ強度を３００ＭＰａ以上
としておくことによって、多芯光コネクタ１の脱着時に
必要以上の横荷重が印加された際、もしくは多芯光コネ
クタ１を誤って落下させてしまった際の破断、破損を防
止することができる。The oxide ceramics preferably have a Young's modulus of 430 GPa or less, and are not deformed by the pressing force applied to the coupling end face 7 when connecting the multi-core optical connectors 1 to each other, and the connection loss is low. PC connection becomes possible, and by setting the 3-point bending strength to 300 MPa or more, when an excessive lateral load is applied when the multicore optical connector 1 is attached or detached, or the multicore optical connector 1 is accidentally dropped. It is possible to prevent breakage and damage when it is caused.
【００２１】さらに、上記酸化物セラミックスのうちジ
ルコニアを主成分とするセラミックスが最適であり、具
体的には、ＺｒＯ2を主成分とし、安定化剤としてＹ2Ｏ
3、ＭｇＯ、ＣａＯ、ＣｅＯ2、Ｄｙ2Ｏ3等の一種以上を
含有するもので、正方晶の結晶を主体とした部分安定化
ジルコニアセラミックスを用いる。このジルコニアセラ
ミックスは、平均結晶粒径が０．１〜１．０μｍで、且
つ気孔率が３％以下であるものが好ましく、結晶間の空
隙の大きさが一定なものとなり、また、気孔率を３％以
下と小さくすることで、光ファイバ固定具２中に含まれ
る空隙の割合を少なくして、結合端面７の面粗さ、加工
精度を高くすることができる。Further, among the above oxide ceramics, ceramics containing zirconia as a main component is most suitable. Specifically, it contains ZrO 2 as a main component and Y 2 O as a stabilizer.
3 , partially containing one or more of MgO, CaO, CeO 2 , Dy 2 O 3, etc., and partially stabilized zirconia ceramics mainly composed of tetragonal crystals are used. It is preferable that the zirconia ceramics have an average crystal grain size of 0.1 to 1.0 μm and a porosity of 3% or less so that the size of voids between crystals becomes constant, and the porosity is By making it as small as 3% or less, the ratio of the voids contained in the optical fiber fixture 2 can be reduced, and the surface roughness and processing accuracy of the coupling end face 7 can be increased.
【００２２】ここで、上記セラミックスからなる光ファ
イバ固定具２の加工方法としては、先ず、セラミックス
材料をプレス成形、射出成形等によって円柱状の成形体
を得、所定温度にて焼成した後、研削もしくは研磨加工
にて外表面を仕上げ、回転防止平面６を研削もしくは研
磨加工によって形成する。Here, as a method of processing the optical fiber fixture 2 made of the above-mentioned ceramics, first, a cylindrical shaped body is obtained by press-molding, injection-molding, etc. a ceramic material, fired at a predetermined temperature, and then ground. Alternatively, the outer surface is finished by polishing and the anti-rotation plane 6 is formed by grinding or polishing.
【００２３】次いで、多芯光ファイバ４を挿通する貫通
孔３をレーザ加工もしくはワイヤ研磨加工にて形成した
後、ガイドピン穴５をレーザ加工もしくはワイヤ研磨加
工または旋盤等による機械加工を行うことによって製作
される。Next, after forming the through hole 3 through which the multi-core optical fiber 4 is inserted by laser processing or wire polishing, the guide pin hole 5 is processed by laser processing or wire polishing or a lathe or the like. Produced.
【００２４】また、上記ガイドピン穴５は、高精度に加
工することが求められ、外径との同心度は１〜３０μ
ｍ、ガイドピン穴５の直径は０．５〜８ｍｍ、深さは２
〜３０ｍｍとしておくことが望ましい。ガイドピン穴５
の直径が０．５ｍｍ未満となると、多芯光コネクタ１同
士を結合させる際に、強度不足から破損する恐れがあ
り、一方８ｍｍより大きいと、ガイドピン穴５が光ファ
イバ固定具２の結合端面７に占める面積が大きくなり、
多芯光コネクタ１の小型化が不可能となる。また、ガイ
ドピン穴５の深さが２ｍｍより浅いと、ガイドピン８が
嵌合しにくく、３０ｍｍより長いと、加工費用が高くな
り、多芯光コネクタ１を高価にしてしまう。Further, the guide pin hole 5 is required to be processed with high precision, and the concentricity with the outer diameter is 1 to 30 μm.
m, the diameter of the guide pin hole 5 is 0.5 to 8 mm, and the depth is 2
It is desirable to set it to -30 mm. Guide pin hole 5
If the diameter is less than 0.5 mm, the multi-core optical connectors 1 may be damaged due to insufficient strength when they are coupled to each other, while if the diameter is greater than 8 mm, the guide pin hole 5 causes the coupling end face of the optical fiber fixture 2 to be coupled. The area occupied by 7 becomes larger,
It becomes impossible to downsize the multi-core optical connector 1. Further, if the depth of the guide pin hole 5 is shallower than 2 mm, the guide pin 8 is difficult to fit, and if it is longer than 30 mm, the processing cost becomes high and the multi-core optical connector 1 becomes expensive.
【００２５】また、上記レーザ加工に用いるレーザの種
類としては、特に限定するものではなく、ＣＯ2レー
ザ、ＹＡＧレーザ、ガラスレーザ、エキシマレーザ等の
公知のレーザを用いることができ、使用する材料によっ
て適宜レーザの種類を選定することができる。例えばジ
ルコニアセラミックスの場合、加工パワーの大きさか
ら、設備価格、扱い安さの点からＹＡＧレーザを用いる
ことが好ましい。The type of laser used for the laser processing is not particularly limited, and known lasers such as CO 2 laser, YAG laser, glass laser and excimer laser can be used, depending on the material used. The type of laser can be selected appropriately. For example, in the case of zirconia ceramics, it is preferable to use a YAG laser in terms of processing power, equipment cost, and ease of handling.
【００２６】なお、上記レーザ加工もしくはワイヤ研磨
加工は、高い位置精度を得るため焼成後に行うことが好
ましい。The laser processing or wire polishing processing is preferably performed after firing in order to obtain high positional accuracy.
【００２７】上記光ファイバ固定具２の貫通孔３には多
芯光ファイバ４が挿通保持されており、多芯光ファイバ
４の先端は上記光ファイバ固定具２の結合端面７より
０．０１〜０．１０μｍ突出させることが好ましく、一
対の多芯光コネクタ１同士を接続させる際、多芯光ファ
イバ４の先端に傷が付くことはなく、より安定したＰＣ
接続を行うことができる。A multi-core optical fiber 4 is inserted and held in the through hole 3 of the optical fiber fixture 2, and the tip of the multi-core optical fiber 4 is 0.01 to 0.01 mm from the coupling end face 7 of the optical fiber fixture 2. It is preferable to project 0.10 μm, and when connecting a pair of multi-core optical connectors 1, the tip of the multi-core optical fiber 4 is not scratched, and a more stable PC
The connection can be made.
【００２８】また、上記多芯光ファイバ４の先端は、曲
率半径が５〜３０ｍｍの略球面状にしておくと、より安
定したＰＣ接続を実現できる。If the tip of the multi-core optical fiber 4 is formed into a substantially spherical shape having a radius of curvature of 5 to 30 mm, more stable PC connection can be realized.
【００２９】なお、本発明の多芯光コネクタ１は、上述
の実施形態に限定されるものではなく、本発明の要旨を
逸脱しない範囲であれば種々の変更は可能であり、上述
の実施形態では、光ファイバ固定具２は１つの回転防止
平面６を有し、その結合端面７が円形状をなしていた
が、図２（ａ）、（ｂ）に示す平面図のように、光ファ
イバ固定具２の結合端面７が四角形状や三角形状等であ
り、１つのガイドピン穴５を有しているものであっても
よく、また同図（ｃ）に示すように回転防止平面６を２
つ以上設けても上述と同様の効果を奏することができ
る。また、上述の実施形態では光ファイバ固定具２にガ
イドピン穴５を設けていたが、同図（ｄ）、（ｅ）に示
すように穴ではなく、Ｖ溝形状や矩形溝形状等のガイド
ピン溝５を設け、このガイドピン溝５にガイドピンを固
定し、多芯光コネクタ１を適正な位置に位置決めできる
構造であればよい。The multi-core optical connector 1 of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention. In the above, the optical fiber fixture 2 has one anti-rotation plane 6 and its coupling end face 7 has a circular shape. However, as shown in the plan views of FIGS. The connecting end surface 7 of the fixture 2 may have a quadrangular shape, a triangular shape, or the like, and may have one guide pin hole 5, and as shown in FIG. Two
Even if three or more are provided, the same effect as described above can be obtained. Although the guide pin hole 5 is provided in the optical fiber fixture 2 in the above-described embodiment, the guide pin hole 5 is not a hole as shown in FIGS. Any structure may be used as long as the pin groove 5 is provided and the guide pin is fixed to the guide pin groove 5 so that the multi-core optical connector 1 can be positioned at an appropriate position.
【００３０】[0030]
【実施例】次いで、本発明の実施例を説明する。EXAMPLES Next, examples of the present invention will be described.
【００３１】先ず、図１に示すような多芯光コネクタ試
料を得るため、ジルコニア粉末を射出成形にて、円柱状
の成形体を得、所定温度にて焼成した後、研削もしくは
研磨加工にて外表面を仕上げ、回転防止平面を研削もし
くは研磨加工によって形成する。First, in order to obtain a multi-core optical connector sample as shown in FIG. 1, zirconia powder is injection-molded to obtain a cylindrical molded body, which is fired at a predetermined temperature and then ground or polished. The outer surface is finished and the anti-rotation plane is formed by grinding or polishing.
【００３２】次いで、多芯光ファイバを挿通する貫通孔
をレーザ加工にて形成した後、直径１ｍｍ、深さ４ｍｍ
のガイドピン穴をその中心位置に１つレーザ加工によっ
て形成した外径２．５ｍｍ、長さ６ｍｍ、１つの回転防
止平面を有する光ファイバ固定具を得る。Next, after forming a through hole for inserting the multi-core optical fiber by laser processing, the diameter is 1 mm and the depth is 4 mm.
An optical fiber fixture having an outer diameter of 2.5 mm, a length of 6 mm, and one anti-rotation plane is formed by laser-machining one guide pin hole of 1.
【００３３】その後、上記貫通孔に多芯光ファイバを接
着剤によって保持し、光ファイバ固定具の結合端面及び
多芯光ファイバの各光ファイバ素線の端面に研磨仕上げ
を行い、多芯光ファイバの芯数が４、各貫通孔間の距離
が２５０μｍの多芯光コネクタ試料を作製した。Thereafter, the multi-core optical fiber is held in the through hole with an adhesive, and the coupling end face of the optical fiber fixing tool and the end faces of the individual optical fiber wires of the multi-core optical fiber are polished to finish the multi-core optical fiber. A multi-core optical connector sample having four cores and a distance between each through hole of 250 μm was prepared.
【００３４】また、比較例として、図３に示すような多
芯光コネクタ試料を得るため、上述と同様に、直径１ｍ
ｍ、深さ４ｍｍのガイドピン穴を２つレーザ加工によっ
て形成した幅７ｍｍ、厚み３ｍｍ、長さ８ｍｍの光ファ
イバ固定具を得る。Further, as a comparative example, in order to obtain a multi-core optical connector sample as shown in FIG.
An optical fiber fixture having a width of 7 mm, a thickness of 3 mm and a length of 8 mm is formed by laser processing two guide pin holes having a depth of m and a depth of 4 mm.
【００３５】その後、貫通孔に多芯光ファイバを接着剤
によって保持し、光ファイバ固定具の結合端面及び多芯
光ファイバの各光ファイバ素線の端面に研磨仕上げを行
い、多芯光ファイバの芯数が４、各貫通孔間の距離が２
５０μｍの多芯光コネクタ試料を作製した。After that, the multi-core optical fiber is held in the through hole with an adhesive, and the coupling end face of the optical fiber fixture and the end faces of the individual optical fiber strands of the multi-core optical fiber are polished to finish the multi-core optical fiber. The number of cores is 4, and the distance between each through hole is 2.
A 50 μm multi-core optical connector sample was prepared.
【００３６】そして、各多芯光コネクタ試料をそれぞれ
１０組作製し、接続損失値を測定した。Then, 10 sets of each multi-core optical connector sample were prepared and the connection loss value was measured.
【００３７】その結果を表１に示す。The results are shown in Table 1.
【００３８】なお、表１中の接続損失は最大値である。The connection loss in Table 1 is the maximum value.
【００３９】[0039]
【表１】 [Table 1]
【００４０】表１より明らかなように、本発明の多芯光
コネクタ試料は、接続損失の平均値が０．３３ｄＢと非
常に低いことが判った。As is clear from Table 1, the multicore optical connector sample of the present invention was found to have a very low average value of splice loss of 0.33 dB.
【００４１】これに対し、比較例である多芯光コネクタ
試料は接続損失の平均値が０．９２ｄＢと約３倍も接続
損失が大きくなっていることが判った。On the other hand, in the multi-core optical connector sample as the comparative example, it was found that the average value of the connection loss was 0.92 dB, which was about three times as large.
【００４２】[0042]
【発明の効果】本発明の多芯光コネクタによれば、光フ
ァイバ固定具に、少なくとも１ヶ所の回転防止平面を設
けるとともに、結合端面にガイドピンを嵌合する１つの
ガイドピン取付け部を設けたことから、一対の多芯光コ
ネクタを精度良く接続することができ、ガイドピン穴の
製造公差の累積を抑えられるため光ファイバの接続損失
を減少させることが可能となり、しかもガイドピン穴が
光ファイバ固定具の結合端面に占めている面積が小さく
なるため小型が可能となる。According to the multi-core optical connector of the present invention, the optical fiber fixture is provided with at least one anti-rotation plane and one guide pin mounting portion for fitting the guide pin to the coupling end face. Therefore, it is possible to connect a pair of multi-core optical connectors with high accuracy, and it is possible to reduce the connection loss of the optical fiber because the manufacturing tolerance of the guide pin hole is suppressed. Since the area occupied by the coupling end face of the fiber fixture is small, the size can be reduced.
【００４３】また、本発明の多芯光コネクタによれば、
光ファイバ固定具に少なくとも１つの回転防止平面を設
けるとともに、結合端面が円形状をなし、その中心にガ
イドピン穴を設けたことから、円形状の中心位置は精度
良く求めることができるため、ガイドピン穴を形成する
際、容易に、且つ高精度な加工を行うことができ、一対
の多芯光コネクタを接続する際の接続損失をより小さな
ものとすることができる。According to the multi-core optical connector of the present invention,
Since the optical fiber fixture has at least one anti-rotation plane, the coupling end face has a circular shape, and the guide pin hole is provided at the center thereof, the center position of the circular shape can be accurately determined. When forming the pin hole, it is possible to easily and accurately perform processing, and it is possible to further reduce the connection loss when connecting the pair of multi-core optical connectors.
【図１】（ａ）は本発明の多芯光コネクタの一実施形態
を示す斜視図であり、（ｂ）は同図（ａ）のＸ−Ｘ線に
おける断面図である。1A is a perspective view showing an embodiment of a multi-core optical connector of the present invention, and FIG. 1B is a sectional view taken along line XX of FIG. 1A.
【図２】（ａ）〜（ｅ）は本発明の多芯光コネクタを示
す平面図である。2A to 2E are plan views showing a multi-core optical connector of the present invention.
【図３】従来の多芯光コネクタを示す斜視図である。FIG. 3 is a perspective view showing a conventional multi-core optical connector.
１：多芯光コネクタ ２：光ファイバ固定具 ３：貫通孔 ４：多芯光ファイバ ５：ガイドピン穴 ６：回転防止平面 ７：結合端面 ８：ガイドピン 1: Multi-core optical connector 2: Optical fiber fixture 3: Through hole 4: Multicore optical fiber 5: Guide pin hole 6: Anti-rotation plane 7: Combined end face 8: Guide pin
Claims (2)
有する光ファイバ固定具と、該光ファイバ固定具に挿通
保持された多芯光ファイバとからなる多芯光コネクタで
あって、上記光ファイバ固定具に少なくとも１つの回転
防止平面を設けるとともに、結合端面にガイドピンを嵌
合する１つのガイドピン取付け部を設けたことを特徴と
する多芯光コネクタ。1. A multicore optical connector comprising an optical fiber fixture having a coupling end face for optically coupling a pair of optical fibers, and a multicore optical fiber inserted and held in the optical fiber fixture. A multi-core optical connector, characterized in that at least one rotation prevention flat surface is provided on the fiber fixing tool, and one guide pin mounting portion for fitting a guide pin is provided on a coupling end surface.
有する光ファイバ固定具と、該光ファイバ固定具に挿通
保持された多芯光ファイバとからなる多芯光コネクタで
あって、上記光ファイバ固定具に少なくとも１つの回転
防止平面を設けるとともに、上記結合端面が円形状をな
し、その中心にガイドピン穴を設けたことを特徴とする
多芯光コネクタ。2. A multicore optical connector comprising an optical fiber fixture having a coupling end face for optically coupling a pair of optical fibers, and a multicore optical fiber inserted and held in the optical fiber fixture. A multi-core optical connector, wherein the fiber fixture is provided with at least one rotation prevention plane, the coupling end face is circular, and a guide pin hole is provided at the center thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001258374A JP2003066279A (en) | 2001-08-28 | 2001-08-28 | Multifiber optical connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001258374A JP2003066279A (en) | 2001-08-28 | 2001-08-28 | Multifiber optical connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003066279A true JP2003066279A (en) | 2003-03-05 |
Family
ID=19085909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001258374A Pending JP2003066279A (en) | 2001-08-28 | 2001-08-28 | Multifiber optical connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003066279A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009009165A (en) * | 2008-10-10 | 2009-01-15 | Nippon Electric Glass Co Ltd | Capillary for fixing optical fiber and optical part coupling structure |
| US7621673B2 (en) | 2006-02-08 | 2009-11-24 | Nippon Electric Glass Co., Ltd. | Capillary tube for holding optical fiber |
| JP2010113190A (en) * | 2008-11-07 | 2010-05-20 | Yokogawa Electric Corp | Optical fiber connection structure |
| TWI420171B (en) * | 2006-02-08 | 2013-12-21 | Nippon Electric Glass Co | Connection structure for capillary for optical fiber fixing and optical parts |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57192914A (en) * | 1981-05-12 | 1982-11-27 | Philips Nv | Optical fiber connector |
| JPS6161111A (en) * | 1984-09-01 | 1986-03-28 | Sumitomo Electric Ind Ltd | Optical connector of multi-core |
| JPS62203106A (en) * | 1986-03-04 | 1987-09-07 | Nippon Telegr & Teleph Corp <Ntt> | Single-core bundle part incorporated type water-proof optical fiber multicore connector |
| JPH04294304A (en) * | 1991-03-22 | 1992-10-19 | Nec Eng Ltd | Optical connector ferrule |
| JPH0534550A (en) * | 1991-07-29 | 1993-02-12 | Nippon Telegr & Teleph Corp <Ntt> | Multifiber connector for optical fibercable |
| JPH06118277A (en) * | 1992-10-01 | 1994-04-28 | Mitsubishi Cable Ind Ltd | Optical fiber connector |
| JPH1073742A (en) * | 1996-07-26 | 1998-03-17 | Lucent Technol Inc | Dual fiber ferrule and its formation |
| WO1999024854A1 (en) * | 1997-11-11 | 1999-05-20 | Siemens Aktiengesellschaft | Endpiece for optical fibres |
-
2001
- 2001-08-28 JP JP2001258374A patent/JP2003066279A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57192914A (en) * | 1981-05-12 | 1982-11-27 | Philips Nv | Optical fiber connector |
| JPS6161111A (en) * | 1984-09-01 | 1986-03-28 | Sumitomo Electric Ind Ltd | Optical connector of multi-core |
| JPS62203106A (en) * | 1986-03-04 | 1987-09-07 | Nippon Telegr & Teleph Corp <Ntt> | Single-core bundle part incorporated type water-proof optical fiber multicore connector |
| JPH04294304A (en) * | 1991-03-22 | 1992-10-19 | Nec Eng Ltd | Optical connector ferrule |
| JPH0534550A (en) * | 1991-07-29 | 1993-02-12 | Nippon Telegr & Teleph Corp <Ntt> | Multifiber connector for optical fibercable |
| JPH06118277A (en) * | 1992-10-01 | 1994-04-28 | Mitsubishi Cable Ind Ltd | Optical fiber connector |
| JPH1073742A (en) * | 1996-07-26 | 1998-03-17 | Lucent Technol Inc | Dual fiber ferrule and its formation |
| WO1999024854A1 (en) * | 1997-11-11 | 1999-05-20 | Siemens Aktiengesellschaft | Endpiece for optical fibres |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7621673B2 (en) | 2006-02-08 | 2009-11-24 | Nippon Electric Glass Co., Ltd. | Capillary tube for holding optical fiber |
| TWI420172B (en) * | 2006-02-08 | 2013-12-21 | Nippon Electric Glass Co | Fiber fixing capillary |
| TWI420171B (en) * | 2006-02-08 | 2013-12-21 | Nippon Electric Glass Co | Connection structure for capillary for optical fiber fixing and optical parts |
| JP2009009165A (en) * | 2008-10-10 | 2009-01-15 | Nippon Electric Glass Co Ltd | Capillary for fixing optical fiber and optical part coupling structure |
| JP2010113190A (en) * | 2008-11-07 | 2010-05-20 | Yokogawa Electric Corp | Optical fiber connection structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW200300505A (en) | Capillary for optical fiber, ferrule for optical connector and capillary with optical fiber | |
| JP2008033243A (en) | Split sleeve and optical receptacle using the same | |
| JP2003066279A (en) | Multifiber optical connector | |
| JP2007011281A (en) | Optical connector | |
| JP2003107285A (en) | Multifiber ferrule, its manufacturing method, and multifiber optical connector using the ferrule | |
| WO2018038167A1 (en) | Optical connector | |
| JP4051315B2 (en) | Optical receptacle and optical module using the same | |
| JP4038163B2 (en) | Optical receptacle | |
| JPS61170709A (en) | Optical fiber connector | |
| JP3856109B2 (en) | Capillary tube for optical fiber, ferrule for optical connector, and capillary tube with optical fiber | |
| JP2004325581A (en) | Multifiber ferrule and multifiber optical connector using the same | |
| JP4373959B2 (en) | Ferrule, optical receptacle and optical module | |
| JP2009086168A (en) | Split sleeve, and optical receptacle and optical adaptor using the same | |
| JPH09152524A (en) | Fiber stub and its manufacture | |
| JP2002350684A (en) | Multi-fiber optical connector | |
| JPS5872112A (en) | Production for optical connector and reinforcing pipe | |
| JP3914900B2 (en) | Optical receptacle and method for manufacturing the same | |
| JP3140183B2 (en) | Optical communication sleeve and method of manufacturing the same | |
| JP4072069B2 (en) | Optical receptacle and optical module using the same | |
| JP2004151126A (en) | Fiber stub and optical receptacle using the stub and optical module | |
| JP3838912B2 (en) | Optical fiber fixture, manufacturing method thereof, and optical fiber connector using the same | |
| JP3615648B2 (en) | Optical fiber connecting member and manufacturing method thereof | |
| JP2004205854A (en) | Sleeve for optical communication, optical receptacle and optical module using the sleeve | |
| JP2003307647A (en) | Optical fiber ferrule, its machining method and pigtail for optical module using the same | |
| JP3574620B2 (en) | Ferrule of MT connector for optical fiber connection and connector for optical fiber connection using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080314 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20091119 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20091215 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100215 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20100420 |