JP2003098387A - Optical connector ferrule - Google Patents

Optical connector ferrule

Info

Publication number
JP2003098387A
JP2003098387A JP2001288162A JP2001288162A JP2003098387A JP 2003098387 A JP2003098387 A JP 2003098387A JP 2001288162 A JP2001288162 A JP 2001288162A JP 2001288162 A JP2001288162 A JP 2001288162A JP 2003098387 A JP2003098387 A JP 2003098387A
Authority
JP
Japan
Prior art keywords
optical fiber
insertion hole
connector ferrule
optical connector
optical
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
Application number
JP2001288162A
Other languages
Japanese (ja)
Inventor
Koji Seo
浩司 瀬尾
Masahito Shiino
雅人 椎野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP2001288162A priority Critical patent/JP2003098387A/en
Publication of JP2003098387A publication Critical patent/JP2003098387A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Coupling Of Light Guides (AREA)

Abstract

PROBLEM TO BE SOLVED: To solve conventional problems such as increased connection loss which is caused by ferrule resin melting around the opening of a fiber inserting hole by the elevation of temperature through multiple reflection and flowing into the connecting face of optical fibers, and occasional disconnection which is due to burnt connecting face of optical fibers by the influence of carbon or the like contained in the resin. SOLUTION: The entire optical connector ferrule or the periphery of the opening of an optical fiber inserting hole (hole) in the ferrule is formed with a material having a melting point higher or comparable to that of the optical fiber to be fixedly inserted into the hole. In addition, the opening end of the hole is designed to be recessed from the abutting end faces at the periphery, made wider than the diameter of the hole and also formed into a tapered face expanding outward.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は光ファイバや光導波
路の接続に使用される光コネクタフェルール(多心MT
型フェルール) に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical connector ferrule (multicore MT) used for connecting an optical fiber or an optical waveguide.
Type ferrule).

【0002】[0002]

【従来の技術】従来のMT型フェルールは成形性やコス
トの面からエポキシ系樹脂やPPS樹脂(ポリフェニレ
ンサルファイド)により図7のように成形していた。こ
れは、フェルール10の幅方向両側にガイドピン差込み
孔11が形成、両ガイドピン差込み孔11間にファイバ
挿入孔12が貫通されており、ガイドピン差込み孔11
とファイバ挿入孔12は共にフェルール10の突き合わ
せ端面13に開口し、フェルール10の上面に接着剤投
入口14が開口されている。この光コネクタフェルール
を使用する場合は、ファイバ挿入孔12に石英ファイバ
を通線し、接着剤投入口14から接着剤を注入して、石
英ファイバをフェルール10に固定していた。
2. Description of the Related Art A conventional MT ferrule has been molded from an epoxy resin or a PPS resin (polyphenylene sulfide) as shown in FIG. 7 in terms of moldability and cost. This is because a guide pin insertion hole 11 is formed on both sides of the ferrule 10 in the width direction, and a fiber insertion hole 12 is penetrated between the guide pin insertion holes 11 to form a guide pin insertion hole 11.
Both the fiber insertion hole 12 and the fiber insertion hole 12 are opened in the abutting end face 13 of the ferrule 10, and the adhesive injection port 14 is opened in the upper surface of the ferrule 10. In the case of using this optical connector ferrule, the quartz fiber was passed through the fiber insertion hole 12 and the adhesive was injected from the adhesive injection port 14 to fix the quartz fiber to the ferrule 10.

【0003】[0003]

【発明が解決しようとする課題】近年、WDMシステム
の普及により光パワーの高出力化(例えば数百mW以
上)が進んでいる。光コネクタ接続部は、研磨時や接続
時にコアに傷がついたり、PC(Physica1 Contact)接続
の外れにより、ファイバ同士もしくはファイバと導波路
とが接触せずに隙間が開いたりすると、突き合わせ端面
で多重反射が発生する場合がある。このとき前記高出力
光が通光すると微少な範囲で驚くほど高温になる。場合
によっては石英ファイバを溶かすほど高温になる場合も
ある。このとき、石英ファイバが溶けると融着と似た現
象がおこり、ファイバ溶融中は多少のロス変動がある
が、最終的には多重反射が低減されて、ファイバ接続部
の温度は下がり固体化して安定することが多い。しか
し、多重反射による昇温の過程において、ファイバ接続
部の周辺のフェルール樹脂が融点に達して、ファイバ接
続面に流れ込むことがある。この場合、接続損失が増大
するばかりではなく、例えば、樹脂に含まれるカーボン
等の影響により高熱が発生して突き合わせ端面が焦げて
光ファイバが断線することも考えられる。
In recent years, with the widespread use of WDM systems, higher output of optical power (for example, several hundred mW or more) has been advanced. In the optical connector connection part, if the core is scratched during polishing or connection, or if the PC (Physica 1 Contact) connection is disengaged and there is a gap between the fibers or the fiber and the waveguide are not in contact with each other, the abutting end faces Multiple reflections may occur. At this time, when the high-power light is transmitted, the temperature becomes surprisingly high in a minute range. In some cases, the temperature may become so high as to melt the quartz fiber. At this time, when the quartz fiber melts, a phenomenon similar to fusion occurs and there is some loss fluctuation during fiber fusion, but eventually multiple reflection is reduced, the temperature at the fiber splice decreases and solidifies. It is often stable. However, in the process of temperature increase due to multiple reflection, the ferrule resin around the fiber connecting portion may reach the melting point and flow into the fiber connecting surface. In this case, not only is the connection loss increased, but it is also conceivable that, for example, high heat is generated due to the influence of carbon or the like contained in the resin, the abutting end faces are burnt, and the optical fiber is broken.

【0004】[0004]

【課題を解決するための手段】本発明は高出力の信号光
を伝送しても、フェルールが破壊したり、システムが断
線したりしないようにした光コネクタフェルールを提供
するものである。
SUMMARY OF THE INVENTION The present invention provides an optical connector ferrule which prevents the ferrule from being broken or the system from being broken even when a high-power signal light is transmitted.

【0005】請求項1の光コネクタフェルールは、突き
合わせ端面を有し、その突き合わせ端面にガイドピン挿
入孔と複数の光ファイバ挿通孔とが開口した光コネクタ
フェルールが、光ファイバ挿通孔に挿通固定される光フ
ァイバの融点よりも高いか若しくは同等の融点の材質で
形成されたものである。
An optical connector ferrule according to a first aspect of the present invention has an abutting end face, and an optical connector ferrule having a guide pin insertion hole and a plurality of optical fiber insertion holes opened in the abutting end face is inserted and fixed in the optical fiber insertion hole. It is formed of a material having a melting point higher than or equal to that of the optical fiber.

【0006】請求項2の光コネクタフェルールは、突き
合わせ端面を有し、その突き合わせ端面にガイドピン挿
入孔と複数の光ファイバ挿通孔とが開口した光コネクタ
フェルールの、前記光ファイバ挿通孔の開口部周辺が、
光ファイバ挿通孔に挿通固定される光ファイバの融点よ
りも高いか若しくは同等の融点の材質で形成されたもの
である。
An optical connector ferrule according to a second aspect of the present invention has an abutting end surface, and an opening portion of the optical fiber inserting hole of the optical connector ferrule having a guide pin inserting hole and a plurality of optical fiber inserting holes formed in the abutting end surface. Around
It is formed of a material having a melting point higher than or equal to the melting point of the optical fiber inserted and fixed in the optical fiber insertion hole.

【0007】請求項3の光コネクタフェルールは、突き
合わせ端面を有し、その突き合わせ端面にガイドピン挿
入孔と複数の光ファイバ挿通孔とが開口した光コネクタ
フェルールの、前記光ファイバ挿通孔の開口部周辺が、
突き合わせ端面よりも凹んでいるものである。
The optical connector ferrule of claim 3 has an abutting end face, and an opening of the optical fiber inserting hole of the optical connector ferrule having a guide pin inserting hole and a plurality of optical fiber inserting holes formed in the abutting end face. Around
It is recessed from the butt end surface.

【0008】請求項4の光コネクタフェルールは、請求
項3記載の光コネクタフェルールにおいて、光ファイバ
挿通孔の開口部側が、光ファイバ挿通孔の孔径よりも広
く形成されたものである。
An optical connector ferrule according to a fourth aspect is the optical connector ferrule according to the third aspect, wherein the opening side of the optical fiber insertion hole is formed wider than the diameter of the optical fiber insertion hole.

【0009】請求項5の光コネクタフェルールは、請求
項3記載の光コネクタフェルールにおいて、光ファイバ
挿通孔の開口部側が外側広がりのテーパ面に形成された
ものである。
An optical connector ferrule according to a fifth aspect of the present invention is the optical connector ferrule according to the third aspect, wherein the opening side of the optical fiber insertion hole is formed into a taper surface that expands outward.

【0010】[0010]

【発明の実施の形態】(実施例1)実施例1の光コネク
タフェルールは図7に示されている従来のフェルール1
0と外観は同じで、図7の突き合わせ端面13と同様の
突き合わせ端面1を有し、その突き合わせ端面1の幅方
向両端寄りに2本のガイドピン挿入孔2が形成され、両
ガイドピン挿入孔2間に複数本の光ファイバ挿通孔3が
貫通され、ガイドピン挿入孔2と光ファイバ挿通孔3が
突き合わせ端面1に開口している。実施例1の光コネク
タフェルールが前記従来の光コネクタフェルールと異な
る点は、光ファイバ挿通孔2に挿通固定される光ファイ
バの融点よりも高いか若しくは同等の融点の材質で形成
されている点である。光ファイバが石英製の場合、石英
ファイバの融点は約1500℃であるため、光コネクタフェ
ルールの材質として、それよりも融点の高い物質(例え
ば、融点が約2700℃のジルコニア等)若しくは同等の融
点の材質(例えば、融点が約1500℃のニッケル等)用
い、切削等の機械加工により形成されている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) The optical connector ferrule of Embodiment 1 is a conventional ferrule 1 shown in FIG.
0 has the same abutting end face 1 as that of the abutting end face 13 of FIG. 7, and two guide pin insertion holes 2 are formed at both ends of the abutting end face 1 in the width direction. A plurality of optical fiber insertion holes 3 are penetrated between the two, and the guide pin insertion hole 2 and the optical fiber insertion hole 3 open at the abutting end face 1. The optical connector ferrule of Example 1 is different from the conventional optical connector ferrule in that it is formed of a material having a melting point higher than or equal to the melting point of the optical fiber inserted and fixed in the optical fiber insertion hole 2. is there. If the optical fiber is made of quartz, the melting point of the quartz fiber is about 1500 ° C, so a material with a higher melting point (such as zirconia with a melting point of about 2700 ° C) or an equivalent melting point is used as the material for the optical connector ferrule. It is formed by machining such as cutting using a material (for example, nickel having a melting point of about 1500 ° C.).

【0011】(実施例2)実施例2の光コネクタフェル
ールは、実施例1の光コネクタフェルールと同様に、2
本のガイドピン挿入孔2と、複数本の光ファイバ挿通孔
3を備え、ガイドピン挿入孔2と光ファイバ挿通孔3が
突き合わせ端面1に開口している。実施例2では光コネ
クタフェルールを樹脂製(エポキシ系樹脂やPPS樹脂
等)とし、光ファイバ挿通孔3の開口部周辺4を、光フ
ァイバ挿通孔3に挿通固定される光ファイバの融点より
も高い材質(例えば、ジルコニア等)若しくは同等の融
点の材質(例えば、ジルコニア等)で形成してある。突
き合わせ端面1において、光ファイバ同士の接続部が局
所的に高温となり熱が発生しても、この熱は前記開口部
周辺4に形成された光ファイバの融点よりも高いか若し
くは同等の融点の材質により分散されるため前記熱が高
温のままフェルールに伝わることはないと考えられるの
で、この実施例のように光ファイバ挿通孔3の開口部周
辺4のみを光ファイバの融点よりも高いか若しくは同等
の融点の材質で形成すれば、高温時の弊害を十分に防止
できる。
(Embodiment 2) Like the optical connector ferrule of Embodiment 1, the optical connector ferrule of Embodiment 2 is
A guide pin insertion hole 2 and a plurality of optical fiber insertion holes 3 are provided, and the guide pin insertion hole 2 and the optical fiber insertion hole 3 are open at the abutting end face 1. In the second embodiment, the optical connector ferrule is made of resin (epoxy resin, PPS resin, etc.), and the periphery 4 of the opening of the optical fiber insertion hole 3 is higher than the melting point of the optical fiber inserted and fixed in the optical fiber insertion hole 3. It is made of a material (for example, zirconia or the like) or a material having an equivalent melting point (for example, zirconia or the like). Even if the joint between the optical fibers at the butt end face 1 becomes locally high in temperature and heat is generated, the heat is higher than or equal to the melting point of the optical fiber formed around the opening 4. Since it is considered that the heat is not transmitted to the ferrule as it is at a high temperature because it is dispersed due to the above, only the periphery 4 of the opening of the optical fiber insertion hole 3 is higher than or equal to the melting point of the optical fiber as in this embodiment. If it is made of a material having a melting point of, the adverse effects at high temperatures can be sufficiently prevented.

【0012】本発明の光コネクタフェルールにおいて、
光ファイバ挿通孔3の開口部周辺4のみを光ファイバ挿
通孔3に挿通固定される光ファイバの融点よりも高いか
若しくは同等の融点の材質(例えば、ジルコニアやニッ
ケル等)で形成するには、例えば次のようにすることが
できる。尚、次の各実施例において、開口部周辺4に形
成される光ファイバの融点よりも高いかもしくは同等の
融点の材質は、突き合わせ端面1より少なくとも1mm
程度の深さ(厚み)にわたって設ければ目的を十分に達
成することができる。 1.図1のように、複数のファイバ挿通孔3の開口部周
辺4を一括で覆うことができるサイズのジルコニア製の
ブロック5を形成し、それを開口部周辺4に挿着する。 2.図2のように各光ファイバ挿通孔3を個別に覆うこ
とができる単心フェルール6のようなものを複数個取り
付ける。 3.図3のように突き合わせ端面1にジルコニア製のプ
レート7を挿着する。光コネクタフェルールへの前記ブ
ロック5、単心フェルール6、プレート7等の取り付け
は、圧入、インサート成形、接着固定等の方法で行うこ
とができる。
In the optical connector ferrule of the present invention,
To form only the opening periphery 4 of the optical fiber insertion hole 3 with a material (for example, zirconia or nickel) having a melting point higher than or equal to the melting point of the optical fiber inserted and fixed in the optical fiber insertion hole 3, For example, it can be done as follows. In each of the following examples, a material having a melting point higher than or equal to the melting point of the optical fiber formed around the opening 4 is at least 1 mm from the butt end face 1.
The purpose can be sufficiently achieved if it is provided over a certain depth (thickness). 1. As shown in FIG. 1, a zirconia block 5 having a size capable of collectively covering the openings 4 of the plurality of fiber insertion holes 3 is formed, and the blocks 5 are inserted into the openings 4. 2. As shown in FIG. 2, a plurality of single-core ferrules 6 capable of individually covering each optical fiber insertion hole 3 are attached. 3. As shown in FIG. 3, a plate 7 made of zirconia is attached to the butt end face 1. The block 5, the single-core ferrule 6, the plate 7 and the like can be attached to the optical connector ferrule by a method such as press fitting, insert molding, and adhesive fixing.

【0013】(実施例3)実施例3の光コネクタフェル
ールは、実施例1の光コネクタフェルールと同様に、2
本のガイドピン挿入孔2と、複数本の光ファイバ挿通孔
3を備え、ガイドピン挿入孔2と光ファイバ挿通孔3が
突き合わせ端面1に開口している。実施例3では図4の
ように、光ファイバ挿通孔3の開口部周辺4を突き合わ
せ端面よりも一段凹ませて空気層が設けられている。こ
の空気層は、突き合わせ端面1より少なくとも1mm程
度の深さにわたって設ければ目的を十分に達成すること
ができる。
(Third Embodiment) The optical connector ferrule of the third embodiment has the same structure as the optical connector ferrule of the first embodiment.
A guide pin insertion hole 2 and a plurality of optical fiber insertion holes 3 are provided, and the guide pin insertion hole 2 and the optical fiber insertion hole 3 are open at the abutting end face 1. In the third embodiment, as shown in FIG. 4, an air layer is provided by recessing the periphery 4 of the opening of the optical fiber insertion hole 3 one step further than the abutting end face. If this air layer is provided at a depth of at least about 1 mm from the abutting end faces 1, the purpose can be sufficiently achieved.

【0014】(実施例4)実施例4の光コネクタフェル
ールは、実施例1の光コネクタフェルールと同様に、2
本のガイドピン挿入孔2と、複数本の光ファイバ挿通孔
3を備え、ガイドピン挿入孔2と光ファイバ挿通孔3が
突き合わせ端面1に開口している。実施例4では図5
(a)(b)のように、光ファイバ挿通孔3の開口部周
辺4を、光ファイバ挿通孔3の孔径よりも広く形成して
空気層が設けられている。この空気層は、突き合わせ端
面1より少なくとも1mm程度の深さにわたって設けれ
ば目的を十分に達成することができる。
(Embodiment 4) The optical connector ferrule of Embodiment 4 has the same structure as that of the optical connector ferrule of Embodiment 1.
A guide pin insertion hole 2 and a plurality of optical fiber insertion holes 3 are provided, and the guide pin insertion hole 2 and the optical fiber insertion hole 3 are open at the abutting end face 1. In Example 4, FIG.
As in (a) and (b), the air layer is provided by forming the opening periphery 4 of the optical fiber insertion hole 3 to be wider than the diameter of the optical fiber insertion hole 3. If this air layer is provided at a depth of at least about 1 mm from the abutting end faces 1, the purpose can be sufficiently achieved.

【0015】(実施例5)実施例5の光コネクタフェル
ールも、実施例1の光コネクタフェルールと同様に、2
本のガイドピン挿入孔2と、複数本の光ファイバ挿通孔
3を備え、ガイドピン挿入孔2と光ファイバ挿通孔3が
突き合わせ端面1に開口している。実施例5では図6の
ように、光ファイバ挿通孔の開口部周辺4を突き合わせ
端面1よりも一段凹ませ、更に、光ファイバ挿通孔の開
口部周辺4を外側広がりのテーパ面に形成して空気層が
設けられている。この空気層は、突き合わせ端面1より
少なくとも1mm程度の深さにわたって設ければ目的を
十分に達成することができる。
(Embodiment 5) The optical connector ferrule of the embodiment 5 has the same structure as the optical connector ferrule of the embodiment 1,
A guide pin insertion hole 2 and a plurality of optical fiber insertion holes 3 are provided, and the guide pin insertion hole 2 and the optical fiber insertion hole 3 are open at the abutting end face 1. In the fifth embodiment, as shown in FIG. 6, the periphery 4 of the opening of the optical fiber insertion hole is recessed from the abutting end face 1 by one step, and the periphery 4 of the opening of the optical fiber insertion hole is formed into a taper surface that spreads outward. An air layer is provided. If this air layer is provided at a depth of at least about 1 mm from the abutting end faces 1, the purpose can be sufficiently achieved.

【0016】図示した光コネクタフェルールは、突き合
わせ端面1が垂直面であるが、本発明の光コネクタフェ
ルールは、突き合わせ端面1が斜め研磨されたものでも
よい。また、光ファイバの融点よりも融点の高い材質で
あれば、ジルコニア以外の材質を使用することもでき
る。例えば、石英ファイバの融点と同等の融点を有する
金属であればニッケル以外の材質を使用することもでき
る。
In the illustrated optical connector ferrule, the abutting end face 1 is a vertical surface, but the optical connector ferrule of the present invention may have the abutting end face 1 obliquely polished. Further, a material other than zirconia can be used as long as the material has a melting point higher than that of the optical fiber. For example, a material other than nickel can be used as long as it is a metal having a melting point similar to that of quartz fiber.

【0017】[0017]

【発明の効果】請求項1の光コネクタフェルールは、光
ファイバ挿通孔に挿通固定される光ファイバの融点より
も高いか若しくは同等の融点の材質で形成されたので、
突き合わせ端面が高温になっても石英ファイバが先に溶
融する。このため、初期的には融着のような現象が発生
して多少の接続損失変動はあっても、最終的には安定す
るのでフェルールの破壊もしくはシステムの断線は回避
される。
The optical connector ferrule of claim 1 is formed of a material having a melting point higher than or equal to the melting point of the optical fiber inserted and fixed in the optical fiber insertion hole.
Even if the butt end surfaces become hot, the quartz fiber melts first. For this reason, even if a phenomenon such as fusion occurs initially and there is some variation in splice loss, it will eventually stabilize, so that destruction of the ferrule or disconnection of the system can be avoided.

【0018】請求項2の光コネクタフェルールは、光フ
ァイバ挿通孔の開口部周辺を光ファイバ挿通孔に挿通固
定される光ファイバの融点よりも高いか若しくは同等の
融点の材質で形成したので、請求項1と同様の効果があ
る。ちなみに、熱伝導を考慮すると、光ファイバ挿通孔
の開口部周辺のみを光ファイバの融点よりも高いか若し
くは同等の融点の材質で形成するだけで、請求項1と同
様の効果が十分に得られ、高信頼性の光コネクタフェル
ールとなる。
Since the optical connector ferrule of claim 2 is formed of a material having a melting point higher than or equal to the melting point of the optical fiber inserted and fixed in the optical fiber insertion hole, the periphery of the opening of the optical fiber insertion hole is formed. It has the same effect as the item 1. Incidentally, in consideration of heat conduction, the same effect as in claim 1 can be sufficiently obtained by forming only the periphery of the opening of the optical fiber insertion hole with a material having a melting point higher than or equal to the melting point of the optical fiber. , Becomes a highly reliable optical connector ferrule.

【0019】請求項3の光コネクタフェルールは、光フ
ァイバ挿通孔の開口部周辺が、光ファイバ挿通孔の開口
部周辺が、光ファイバ挿通孔の開口部周辺が、突き合わ
せ端面よりも凹んでいるので、突き合わせ端面付近が高
温になっても、光ファイバ挿通孔の開口部周辺が空気層
で断熱され、フェルールの溶融が防止され、高信頼性の
光コネクタフェルールとなる。
In the optical connector ferrule of the third aspect, the periphery of the opening of the optical fiber insertion hole, the periphery of the opening of the optical fiber insertion hole, and the periphery of the opening of the optical fiber insertion hole are recessed from the abutting end face. Even when the vicinity of the abutting end faces becomes high in temperature, the periphery of the opening of the optical fiber insertion hole is thermally insulated by the air layer, the melting of the ferrule is prevented, and a highly reliable optical connector ferrule is provided.

【0020】請求項4の光コネクタフェルールは、光フ
ァイバ挿通孔の開口部周辺が、光ファイバ挿通孔の孔径
よりも広く形成されたもので、突き合わせ端面付近が高
温になっても、光ファイバ挿通孔の開口部周辺が空気層
で断熱され、フェルールの破壊もしくはシステムの断線
が回避され、高信頼性の光コネクタフェルールとなる。
According to the optical connector ferrule of claim 4, the periphery of the opening of the optical fiber insertion hole is formed wider than the diameter of the optical fiber insertion hole, so that the optical fiber insertion hole can be inserted even if the vicinity of the abutting end face becomes hot. The periphery of the opening of the hole is insulated with an air layer, and the destruction of the ferrule or the disconnection of the system is avoided, resulting in a highly reliable optical connector ferrule.

【0021】請求項5の光コネクタフェルールは、光フ
ァイバ挿通孔の開口部側が外側広がりのテーパ面に形成
されたので、突き合わせ端面付近が高温になっても、光
ファイバ挿通孔の開口部周辺が空気層で断熱され、フェ
ルールの破壊もしくはシステムの断線が回避され、高信
頼性の光コネクタフェルールとなる。
In the optical connector ferrule of the fifth aspect, since the opening side of the optical fiber insertion hole is formed as a taper surface that expands outward, even if the vicinity of the abutting end surface becomes high in temperature, the periphery of the opening of the optical fiber insertion hole remains. It is insulated with an air layer to prevent destruction of the ferrule or disconnection of the system, making it a highly reliable optical connector ferrule.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の光コネクタフェルールの光ファイバ挿
通孔の開口部周辺に高融点の材料で成形されたブロック
を固定した状態の斜視図。
FIG. 1 is a perspective view showing a state in which a block formed of a high melting point material is fixed around the opening of an optical fiber insertion hole of an optical connector ferrule of the present invention.

【図2】本発明の光コネクタフェルールの光ファイバ挿
通孔の開口部周辺に高融点の材料で成形されたフェルー
ルを挿着した状態の斜視図。
FIG. 2 is a perspective view showing a state where a ferrule formed of a high melting point material is inserted around the opening of the optical fiber insertion hole of the optical connector ferrule of the present invention.

【図3】本発明の光コネクタフェルールの突き合わせ端
面に高融点の材料で成形されたプレートを取り付けた状
態の斜視図。
FIG. 3 is a perspective view of the optical connector ferrule of the present invention with a plate formed of a high melting point material attached to the abutting end face thereof.

【図4】本発明の光コネクタフェルールの光ファイバ挿
通孔の開口部周辺を凹陥させた状態の斜視図。
FIG. 4 is a perspective view of the optical connector ferrule of the present invention in a state where the periphery of the opening of the optical fiber insertion hole is recessed.

【図5】(a)は本発明の光コネクタフェルールの光フ
ァイバ挿通孔の開口部周辺を広くした状態の斜視図、
(b)は(a)の光コネクタフェルールの断面図。
FIG. 5A is a perspective view of the optical connector ferrule of the present invention in which the periphery of the opening of the optical fiber insertion hole is widened;
7B is a sectional view of the optical connector ferrule of FIG.

【図6】本発明の光コネクタフェルールの光ファイバ挿
通孔の開口部周辺を外側広がりのテーパにした状態の斜
視図。
FIG. 6 is a perspective view of the optical connector ferrule of the present invention in a state where the periphery of the opening of the optical fiber insertion hole is tapered outwardly.

【図7】従来の光コネクタフェルールの斜視図。FIG. 7 is a perspective view of a conventional optical connector ferrule.

【符号の説明】[Explanation of symbols]

1 突き合わせ端面 2 ガイドピン挿入孔 3 光ファイバ挿入孔 4 開口部周辺 5 ブロック 6 単心フェルール 7 プレート 1 Butt end face 2 Guide pin insertion hole 3 Optical fiber insertion hole 4 Around the opening 5 blocks 6 single-core ferrule 7 plates

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】突き合わせ端面を有し、その突き合わせ端
面にガイドピン挿入孔と複数の光ファイバ挿通孔とが開
口した光コネクタフェルールが、光ファイバ挿通孔に挿
通固定される光ファイバの融点よりも高いか若しくは同
等の融点の材質で形成されたことを特徴とする光コネク
タフェルール。
1. An optical connector ferrule having a butt end surface, and a guide pin insertion hole and a plurality of optical fiber insertion holes opened in the butt end surface, is higher than a melting point of an optical fiber inserted and fixed in the optical fiber insertion hole. An optical connector ferrule, which is formed of a material having a high or equivalent melting point.
【請求項2】突き合わせ端面を有し、その突き合わせ端
面にガイドピン挿入孔と複数の光ファイバ挿通孔とが開
口した光コネクタフェルールの、前記光ファイバ挿通孔
の開口部周辺が、光ファイバ挿通孔に挿通固定される光
ファイバの融点よりも高いか若しくは同等の融点の材質
で形成されたことを特徴とする光コネクタフェルール。
2. An optical connector ferrule having an abutting end face, and a guide pin inserting hole and a plurality of optical fiber inserting holes opened in the abutting end face, an optical fiber inserting hole being around the opening of the optical fiber inserting hole. An optical connector ferrule, which is formed of a material having a melting point higher than or equal to the melting point of the optical fiber inserted and fixed in.
【請求項3】突き合わせ端面を有し、その突き合わせ端
面にガイドピン挿入孔と複数の光ファイバ挿通孔とが開
口した光コネクタフェルールの、前記光ファイバ挿通孔
の開口部周辺が、突き合わせ端面よりも凹んでいること
を特徴とする光コネクタフェルール。
3. An optical connector ferrule having a butt end surface, and a guide pin insertion hole and a plurality of optical fiber insertion holes opened in the butt end surface, wherein the periphery of the opening of the optical fiber insertion hole is more than the butt end surface. An optical connector ferrule characterized by being recessed.
【請求項4】請求項3記載の光コネクタフェルールにお
いて、光ファイバ挿通孔の開口部側が、光ファイバ挿通
孔の孔径よりも広く形成されたことを特徴とする光コネ
クタフェルール。
4. The optical connector ferrule according to claim 3, wherein the opening side of the optical fiber insertion hole is formed wider than the diameter of the optical fiber insertion hole.
【請求項5】請求項3記載の光コネクタフェルールにお
いて、光ファイバ挿通孔の開口部側が外側広がりのテー
パ面に形成されたことを特徴とする光コネクタフェルー
ル。
5. The optical connector ferrule according to claim 3, wherein the opening side of the optical fiber insertion hole is formed into a taper surface expanding outward.
JP2001288162A 2001-09-21 2001-09-21 Optical connector ferrule Pending JP2003098387A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001288162A JP2003098387A (en) 2001-09-21 2001-09-21 Optical connector ferrule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001288162A JP2003098387A (en) 2001-09-21 2001-09-21 Optical connector ferrule

Publications (1)

Publication Number Publication Date
JP2003098387A true JP2003098387A (en) 2003-04-03

Family

ID=19110857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001288162A Pending JP2003098387A (en) 2001-09-21 2001-09-21 Optical connector ferrule

Country Status (1)

Country Link
JP (1) JP2003098387A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108398753A (en) * 2018-04-20 2018-08-14 上海瑞柯恩激光技术有限公司 Fibre-optical splice and Medical Devices

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04356003A (en) * 1990-09-11 1992-12-09 Furukawa Electric Co Ltd:The Optical connector
JPH0694941A (en) * 1992-09-11 1994-04-08 Fujitsu Ltd Optical connector
JPH06123820A (en) * 1992-10-14 1994-05-06 Fujitsu Ltd Optical connector
JPH09325241A (en) * 1996-06-07 1997-12-16 Fujikura Ltd Optical connector and its manufacture
JP2001004862A (en) * 1999-06-17 2001-01-12 Sumitomo Electric Ind Ltd Ferrule for optical connector and its manufacture, and optical connector using the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04356003A (en) * 1990-09-11 1992-12-09 Furukawa Electric Co Ltd:The Optical connector
JPH0694941A (en) * 1992-09-11 1994-04-08 Fujitsu Ltd Optical connector
JPH06123820A (en) * 1992-10-14 1994-05-06 Fujitsu Ltd Optical connector
JPH09325241A (en) * 1996-06-07 1997-12-16 Fujikura Ltd Optical connector and its manufacture
JP2001004862A (en) * 1999-06-17 2001-01-12 Sumitomo Electric Ind Ltd Ferrule for optical connector and its manufacture, and optical connector using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108398753A (en) * 2018-04-20 2018-08-14 上海瑞柯恩激光技术有限公司 Fibre-optical splice and Medical Devices

Similar Documents

Publication Publication Date Title
JP5521081B2 (en) Fiber optic connector
US6939060B2 (en) Method and apparatus for heating fusion spliced portion of optical fibers and optical fiber array
JPH03125103A (en) Coupling device of optical fiber and light guide on substrate
JP3158105B2 (en) Manufacturing method of core diffused optical fiber
JP4465530B2 (en) Optical fiber connection method
JP3860692B2 (en) Alignment sleeve for interconnecting optical ferrules of different sizes and method for making the same
US6519406B1 (en) Thermally fused integral ferrule and its manufacturing method, and fiber array manufacturing method
KR20010078313A (en) Method of fabricating a fiber optic connector ferrule
JPH06148447A (en) Coupling parts for ribbon optical fiber
JP2503138B2 (en) Optical fiber terminal
JP2001201667A (en) High density multi-chip fiber array connector
JP2003098387A (en) Optical connector ferrule
JP2007264424A (en) Optical fiber component and optical device
US6296401B1 (en) Method for fusion pigtailing an optical fiber to an integrated optical device and resultant structures
JP3757485B2 (en) Optical connector and manufacturing method thereof
US20240103234A1 (en) Ferrule of optical cable with multi cores
JP2001004862A (en) Ferrule for optical connector and its manufacture, and optical connector using the same
JPH07294770A (en) Method for connecting quartz waveguide to optical fiber and structure of juncture
JPH08334651A (en) Multi-fiber optical connector
JPH0668569B2 (en) Optical fiber multi-core batch connector
JP3523553B2 (en) Mechanical splice
JP4101018B2 (en) Self-cut connector for optical fiber
JPH0470610A (en) Fitting method for optical connector ferrule
CN113406746A (en) Optical fiber splicing method, optical fiber splicing device and optical fiber connector
JP2004317927A (en) V-groove pedestal setting for coated optical fiber connection and method for assembling coated optical fiber connection tool using same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080901

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100715

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100727

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20101124