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JPS60140303A - Polishing method of optical fiber end face - Google Patents

Polishing method of optical fiber end face

Info

Publication number
JPS60140303A
JPS60140303AJP24892083AJP24892083AJPS60140303AJP S60140303 AJPS60140303 AJP S60140303AJP 24892083 AJP24892083 AJP 24892083AJP 24892083 AJP24892083 AJP 24892083AJP S60140303 AJPS60140303 AJP S60140303A
Authority
JP
Japan
Prior art keywords
sleeve
optical fiber
face
wire
bare
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
JP24892083A
Other languages
Japanese (ja)
Inventor
Takashi Kishimoto
隆 岸本
Koji Kakimoto
浩二 柿本
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.)
Nippon Sheet Glass Co Ltd
Original Assignee
Nippon Sheet Glass 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 Nippon Sheet Glass Co LtdfiledCriticalNippon Sheet Glass Co Ltd
Priority to JP24892083ApriorityCriticalpatent/JPS60140303A/en
Publication of JPS60140303ApublicationCriticalpatent/JPS60140303A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PURPOSE:To shorten a work time by inserting an optical fiber which has exposed a bare wire by stripping off a core wire by a necessary quantity, from an opening end of a sleeve, projecting the bare wire from and opposite side of the sleeve, and fixing it to the sleeve by a rapid hardening resin. CONSTITUTION:A bare wire 4 is exposed by stripping off a core wire 3 of the end part of an optical fiber by a necessary quantity. An adhesive agent 2 is packed in the inside of a sleeve 1, the core wire 3 and the base wire 4 of the optical fiber are inserted from an opening part 1c of the sleeve 1, an end part 4a of the bare wire 4 is projected by a prescribed length from an end face 1a of the sleeve 1, and the end part 4a and the end face 1a of the sleeve 1 are made to adhere to each other by a rapid hardening resin 8. Also, the core wire 3 and the sleeve 1 are clamped by caulking the wall surface of the sleeve 1. Subsequently, an end face 4b of the bare wire 4 is polished so as to become the same surface as the end face 1a of the sleeve 1. In this way, polishing can be executed before the adhesive agent 2 is hardened, and the work time can be shortened.

Description

Translated fromJapanese

【発明の詳細な説明】本発明は、光フアイバ端面の研磨方法に関し、特に、光
フアイバ同士や光ファイバと他の光学素子との接続の前
処理としての光フアイバ端間の研磨の方法に関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of polishing the end faces of optical fibers, and in particular to a method of polishing the ends of optical fibers as a pretreatment for connecting optical fibers to each other or to connecting optical fibers to other optical elements. It is.

上記の様な接続に於いて光の接続損失を少なくする為に
は、光ファイバの端面を研磨する必要がある。そして、
その方法として、光ファイバ裸線をスリーブ内等に固定
し、これらの光ファイバ裸線とスリーブとを共に研磨す
る様にしている場合が多い。
In order to reduce the optical connection loss in the above connection, it is necessary to polish the end face of the optical fiber. and,
As a method for this purpose, a bare optical fiber is often fixed in a sleeve or the like, and the bare optical fiber and the sleeve are polished together.

第1図は、この様な研磨方法の従来例を示している。こ
の第1図に示すスリーブ(1)は金属等から成っており
、その外径は略均−であるが内径は均一ではない。つま
り、スリーブ(1)の一端面(1a)側は小径部(1b
)、他端面(1c)側は大径部(ld)となっており、
これらの小径部(1b)と大径部(1d)とはテーバ部
(1e)によって連結されている。
FIG. 1 shows a conventional example of such a polishing method. The sleeve (1) shown in FIG. 1 is made of metal or the like, and its outer diameter is approximately uniform, but its inner diameter is not uniform. In other words, one end surface (1a) side of the sleeve (1) has a small diameter portion (1b).
), the other end face (1c) side is a large diameter part (ld),
These small diameter portion (1b) and large diameter portion (1d) are connected by a tapered portion (1e).

スリーブ(1)内には、光ファイバをこのスリーブ(1
)内に固定する為の液状の接着剤(2)をまず充填する
。この接着剤(2)としては、通常、エポキシ樹脂を使
用する。
The optical fiber is inserted into the sleeve (1).
) First, fill the inside with liquid adhesive (2) to fix it. As this adhesive (2), epoxy resin is usually used.

接着剤(2)の充填後に光ファイバをスリーブ(1)内
へ挿入するが、光フアイバコードのままでは挿入せず、
光フアイバコードがら外側被覆層(図示せず)と繊維状
の補強材(図示せず)とを除去した光フアイバ芯線(3
)の部分、及びこの光ファイバ芯ig(3)から更にナ
イロンコート等の内側被覆層を除去した光ファイバ裸線
(4)の部分を、スリーブ(1)内へ挿入する。
After filling the adhesive (2), the optical fiber is inserted into the sleeve (1), but the optical fiber cord is not inserted as is.
Optical fiber core wire (3
) and the bare optical fiber (4) from which the inner coating layer such as the nylon coat has been removed from the optical fiber core ig (3) are inserted into the sleeve (1).

なお、スリーブ(1)の小径部(1b)の内径は、光フ
ァイバ裸線(4)の外径よりも僅かに大きく設定されて
おり、大径部(1d)の内径は、光フアイバ芯線(3)
の外径よりも僅かに大きく設定されている。
The inner diameter of the small diameter part (1b) of the sleeve (1) is set to be slightly larger than the outer diameter of the bare optical fiber (4), and the inner diameter of the large diameter part (1d) is set to be slightly larger than the outer diameter of the bare optical fiber (4). 3)
It is set slightly larger than the outer diameter of.

スリーブ(1)内へ光ファイバを挿入するに際しては、
まず光ファイバ裸線(4)を他端面(lc)側から挿入
し、次いでこの光ファイバ裸線(4)に連なっている光
フアイバ芯線(3)を挿入する。
When inserting the optical fiber into the sleeve (1),
First, the bare optical fiber (4) is inserted from the other end surface (lc) side, and then the optical fiber core wire (3) connected to the bare optical fiber (4) is inserted.

この時、光ファイバ裸線(4)はテーバ部(le)にガ
イドされて小径部(Ib)内へ入って行く。そして、第
1図に示す様に、光ファイバ裸線(4)の一端部(4a
)がスリーブ(1)の一端面(1a)から僅かに(数−
以下)突出するまで、光ファイバを挿入する。
At this time, the bare optical fiber (4) is guided by the tapered portion (le) and enters the small diameter portion (Ib). Then, as shown in Fig. 1, one end (4a) of the bare optical fiber (4)
) is slightly (a few -
(Below) Insert the optical fiber until it protrudes.

次いで、光ファイバ裸線(4)の一端部(4a)とスリ
ーブ(1)の一端面(1a)とに接着剤(5)を塗布す
る。この接着剤(5)としては、スリーブ(1)内に充
填する接着剤(2)と同じもの、例えばエポキシ樹脂を
使用する。
Next, an adhesive (5) is applied to one end (4a) of the bare optical fiber (4) and one end surface (1a) of the sleeve (1). As this adhesive (5), the same adhesive as the adhesive (2) filled in the sleeve (1), for example, epoxy resin, is used.

接着剤(5)が硬化して光ファイバ裸* (4)の一端
部(4a)がスリーブ(1)に対して固定された後に、
この一端部(4a)の端部(4b)と接着剤(5)、更
にはスリーブ(1)の一端面(Ia)を研磨すれば、端
部(4b)を一端面(la) 土面−にすることができ
る。
After the adhesive (5) has hardened and the one end (4a) of the bare optical fiber* (4) has been fixed to the sleeve (1),
By polishing the end (4b) of this one end (4a), the adhesive (5), and the one end surface (Ia) of the sleeve (1), the end (4b) can be turned into one end surface (la). It can be done.

つまり、接着剤(5)がヤトイの役目をしている。In other words, the adhesive (5) is acting as a Yatoi.

以上の様な処理を行ってから、例えば第2図に示す様に
自己集束性レンズ(6)が内挿されているスリーブ(7
)内へスリーブ(1)を挿入すれば、光ファイバ裸線(
4)とレンズ(6)との間で光の損失が少ない接続を行
うことができる。また、その他に、スリーブ(7)内で
スリーブ(1)同士を対向させれば、光ファイバ裸線(
4)同士で光の損失が少ない接続を行うことができる。
After performing the above processing, for example, as shown in FIG. 2, the sleeve (7) into which the self-focusing lens (6) is inserted
), insert the sleeve (1) into the bare optical fiber (
4) and the lens (6) can be connected with low optical loss. In addition, if the sleeves (1) are made to face each other within the sleeve (7), the bare optical fiber (
4) Connections can be made with low optical loss.

ところが、光ファイバ裸線(4)の一端部(4a)をス
リーブ(1)に対して固定する為の接着剤(5)として
使用されているエポキシ樹脂はその硬化に数時間を要す
るので、接着剤(5)を塗布しても一端部(4a)の端
面(4b)を直ちに研磨することはできない。従って、
上述の様な研磨方法では光フアイバ端面の研磨完了まで
を短時間で行うことができず、第2図に示す様な接続に
到るまでに長時間を要する。
However, the epoxy resin used as the adhesive (5) to fix one end (4a) of the bare optical fiber (4) to the sleeve (1) takes several hours to cure, so the adhesive Even if the agent (5) is applied, the end surface (4b) of the one end portion (4a) cannot be polished immediately. Therefore,
With the polishing method as described above, it is not possible to complete the polishing of the end face of the optical fiber in a short period of time, and it takes a long time to reach the connection as shown in FIG.

本発明は、この様な問題点に鑑み、光フアイバ端面の研
磨完了までを短時間で行うことができる光フアイバ端面
の研磨方法を提供することを目的としている。
SUMMARY OF THE INVENTION In view of these problems, it is an object of the present invention to provide a method for polishing an optical fiber end face, which can complete polishing of an optical fiber end face in a short time.

以下、本発明の一実施例を第3図を参照しながら説明す
る。この第3図に示す様に、本実施例は、光ファイバ裸
線(4)及び光フアイバ芯線(3)をスリーブ(1)内
へ挿入した後に、スリーブ(1)の他端面(1c)側の
壁面をかしめて光フアイバ芯線(3)を緊締し、この緊
締によって光フアイバ芯線(3)のスリーブ(1)内の
部分をスリーブ(1)に対して固定し、また光ファイバ
裸線(4)の一端部(4a)とスリーブ(1)の一端面
(la)とに、通常のエポキシ樹脂ではなく速硬化性エ
ポキシ樹脂を紫外線硬化樹脂等の短時間硬化型の接着剤
(8)を塗布することを除いて、第1図に示した従来例
と実質的に同様の工程を有していてよい。
An embodiment of the present invention will be described below with reference to FIG. As shown in FIG. 3, in this embodiment, after the bare optical fiber (4) and the core optical fiber (3) are inserted into the sleeve (1), the other end surface (1c) of the sleeve (1) is The optical fiber core wire (3) is tightened by caulking the wall surface of the optical fiber core wire (3), and by this tightening, the part of the optical fiber core wire (3) inside the sleeve (1) is fixed to the sleeve (1), and the bare optical fiber wire (4 ) and one end surface (la) of the sleeve (1), apply a short-curing adhesive (8) such as a quick-curing epoxy resin, such as an ultraviolet curable resin, instead of a normal epoxy resin. The process may be substantially the same as the conventional example shown in FIG. 1, except for the following steps.

この様に、本実施例に於いては、短時間硬化型の接着剤
(8)によって光ファイバ裸線(4)の −一端部(4
a)をスリーブ(1)に対して固定しているので、この
固定の為の時間が短かくて済み、一端部(4a)の端面
(4b)の研磨完了までを短時間で行うことができる。
In this way, in this embodiment, the - one end (4) of the bare optical fiber (4) is bonded to the short-curing adhesive (8).
Since a) is fixed to the sleeve (1), the time required for this fixing is short, and polishing of the end face (4b) of the one end (4a) can be completed in a short time. .

また、本実施例に於いては、スリーブ(1)の壁面によ
る緊締によって光フアイバ芯線(3)のスリーブ(1)
内の部分をスリーブ(1)に対しで固定しているので、
接着剤(2)が硬化する前に光フアイバ芯線(3)を相
当強い力で引張ってもこの光ファイバ芯M (3)は動
かず、光ファイバ裸線(4)の研磨された端面(4b)
がスリーブ(1)の一端面(1a)と面一である位置か
ら動くことはない。
In addition, in this embodiment, the sleeve (1) of the optical fiber core wire (3) is tightened by the wall surface of the sleeve (1).
Since the inner part is fixed to the sleeve (1),
Even if the optical fiber core wire (3) is pulled with considerable force before the adhesive (2) hardens, the optical fiber core M (3) will not move and the polished end surface (4b) of the bare optical fiber wire (4) will not move. )
does not move from the position where it is flush with one end surface (1a) of the sleeve (1).

更にまた、上記の緊締によって光ファイバ芯線(3)の
スリーブ(1)内の部分をスリーブ(1)に対して確実
に固定することができるので、スリーブ(1)外に位置
している光フアイバ芯線(3)を曲げた場合でも、この
光フアイバ芯線(3)の被覆層の端部近傍で光ファイバ
裸線(4)が折れることはない。
Furthermore, by tightening as described above, the portion of the optical fiber core wire (3) inside the sleeve (1) can be securely fixed to the sleeve (1), so that the optical fiber located outside the sleeve (1) can be securely fixed to the sleeve (1). Even if the core wire (3) is bent, the bare optical fiber wire (4) will not break near the end of the coating layer of the optical fiber core wire (3).

なお、光ファイバ裸線(4)や光フアイバ芯線(3)を
スリーブ(1)内に固定する為にこのスリーブ(1)内
に充填される接着剤(2)は、短時間硬化型のものでは
なく、信顛性の高い通常のエポキシ樹脂の方が好ましい
。これは、短時間硬化型の接着剤では、硬化時に発泡し
て、光ファイバ裸線(4)や光フアイバ芯線(3)との
接着面積が減少する為である。
The adhesive (2) filled into the sleeve (1) to fix the bare optical fiber (4) and the cored optical fiber (3) inside the sleeve (1) is of a short-curing type. Instead, it is preferable to use ordinary epoxy resin, which has high reliability. This is because a short-curing adhesive foams during curing, reducing the bonding area with the bare optical fiber (4) and the core optical fiber (3).

この様に接着面積が減少すると、使用中のヒートサイク
ルによる光ファイバ裸線(4)や光フアイバ芯線(3)
の膨張収縮によって接着が外れ、光ファイバ裸線(4)
の端面(4b)がスリーブ(1)の一端面(1a)に対
して動いて、光ファイバ裸線(4)とレンズ(6)や光
ファイバ裸線(4)同士の接続で光の損失が大きくなる
ことがある。
When the bonding area decreases in this way, the optical fiber bare wire (4) and the optical fiber core wire (3) due to the heat cycle during use.
Due to the expansion and contraction of the adhesive, the adhesive comes off and the bare optical fiber (4)
The end face (4b) of the sleeve (1) moves relative to the one end face (1a) of the sleeve (1), and light loss occurs due to the connection between the bare optical fiber (4) and the lens (6) or between the bare optical fibers (4). It can become large.

上述の如く、本発明は、短時間硬化型の接着剤によって
光ファイバをスリーブに対して固定しているので、この
固定の為の時間が短かくて済み、光フアイバ端面の研磨
完了までを短時間で行うことができる。
As mentioned above, since the present invention fixes the optical fiber to the sleeve using a short-curing adhesive, the time for this fixing can be shortened, and the time required to complete polishing of the end face of the optical fiber can be shortened. It can be done in time.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の従来例を示す概略的な縦断面図、第2
図は第1図に示した従来例の適用例を示す概略的な縦断
面図、第3図は本発明の一実施例を示す概略的な縦断面
図である。なお図面に用いられた符号において、(1) −−−−−−−スリーブ(la) −−−−−−−−・−一端面(1c)・−・
−−−一−−−−−−−− 他端面(3) −一−−−
−−−−〜−〜−光フアイバ芯線(4) −−−一一−
−−− 光ファイバ裸線(4a) −一−−−−−−−
−−−一端部(4b) −−−−−−−−・−−m−−
・ 端面(8) −−−−−−〜−−−−−−−〜〜 
接着剤である。代理人 土星 勝常包芳男杉浦俊貴
FIG. 1 is a schematic vertical cross-sectional view showing a conventional example of the present invention, and FIG.
The figure is a schematic vertical cross-sectional view showing an example of application of the conventional example shown in FIG. 1, and FIG. 3 is a schematic vertical cross-sectional view showing an embodiment of the present invention. In addition, in the codes used in the drawings, (1) --------- Sleeve (la) ------------ One end surface (1c) ---
−−−1−−−−−−− Other end surface (3) −1−−−
−−−−−−−−Optical fiber core wire (4) −−−11−
--- Bare optical fiber (4a) -1---------
---One end (4b) ------------m--
・ End face (8) −−−−−−−−−−−−−−~
It is an adhesive. Agent Saturn Katsutsunekane Yoshio Sugiura Toshiki

Claims (1)

Translated fromJapanese
【特許請求の範囲】[Claims]光ファイバの一端部がスリーブの一端面から僅かに突出
する様に前記光ファイバを前記スリーブの他端面倒から
このスリーブ内へ挿入する工程と、前記光ファイバの前
記一端部と前記スリーブの前記一端面とに短時間硬化型
の接着剤を塗布して前記光ファイバを前記スリーブに対
して固定する工程と、前記光ファイバの前記一端部の端
面を研磨する工程とを夫々具備する光フアイバ端面の研
磨方法。
inserting the optical fiber into the sleeve from the other end surface of the sleeve so that one end of the optical fiber slightly protrudes from one end surface of the sleeve; and inserting the one end of the optical fiber and the one end of the sleeve. fixing the optical fiber to the sleeve by applying a short-curing adhesive to the end face; and polishing the end face of the one end of the optical fiber. Polishing method.
JP24892083A1983-12-281983-12-28Polishing method of optical fiber end facePendingJPS60140303A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP24892083AJPS60140303A (en)1983-12-281983-12-28Polishing method of optical fiber end face

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP24892083AJPS60140303A (en)1983-12-281983-12-28Polishing method of optical fiber end face

Publications (1)

Publication NumberPublication Date
JPS60140303Atrue JPS60140303A (en)1985-07-25

Family

ID=17185381

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP24892083APendingJPS60140303A (en)1983-12-281983-12-28Polishing method of optical fiber end face

Country Status (1)

CountryLink
JP (1)JPS60140303A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5659214A (en)*1980-03-031981-05-22Nec CorpProduction of optical transmission body terminal part
JPS5784416A (en)*1980-09-221982-05-26Western Electric CoMolding of optical fiber connector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS5659214A (en)*1980-03-031981-05-22Nec CorpProduction of optical transmission body terminal part
JPS5784416A (en)*1980-09-221982-05-26Western Electric CoMolding of optical fiber connector

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